TY  - JOUR
AU  - Omerašević, Mia
AU  - Pavkov, Vladimir
AU  - Rosić, Milena
AU  - Egerić, Marija
AU  - Nenadović, Snežana
AU  - Bučevac, Dušan
AU  - Potkonjak, Nebojša
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13094
AB  - Porous anorthite (CaAl2Si2O8) ceramics, suitable for thermal insulation in buildings, were obtained using waste seashells as a source of CaO, kaolin as a source of Al2O3 and SiO2 and banana peel as a pore former. Changing the volume of banana peel as well as the processing temperature was found to be an effective approach to control the thermo-mechanical properties of the obtained anorthite ceramics. The sintering of powder compacts containing up to 30 wt% banana peel at temperatures ranging from 1100 to 1200 °C resulted in anorthite ceramics possessing up to 45% open porosity, a compressive strength between 13 and 92 MPa, a bulk density between 1.87 and 2.62 g/cm3 and thermal conductivity between 0.097 and 3.5 W/mK. It was shown that waste materials such as seashells and banana peel can be used to obtain cost-effective thermal insulation in buildings.
T2  - Materials
T1  - Fabrication of Porous Anorthite Ceramic Insulation Using Solid Wastes
VL  - 17
IS  - 7
SP  - 1478
DO  - 10.3390/ma17071478
ER  - 

@article{
author = "Omerašević, Mia and Pavkov, Vladimir and Rosić, Milena and Egerić, Marija and Nenadović, Snežana and Bučevac, Dušan and Potkonjak, Nebojša",
year = "2024",
abstract = "Porous anorthite (CaAl2Si2O8) ceramics, suitable for thermal insulation in buildings, were obtained using waste seashells as a source of CaO, kaolin as a source of Al2O3 and SiO2 and banana peel as a pore former. Changing the volume of banana peel as well as the processing temperature was found to be an effective approach to control the thermo-mechanical properties of the obtained anorthite ceramics. The sintering of powder compacts containing up to 30 wt% banana peel at temperatures ranging from 1100 to 1200 °C resulted in anorthite ceramics possessing up to 45% open porosity, a compressive strength between 13 and 92 MPa, a bulk density between 1.87 and 2.62 g/cm3 and thermal conductivity between 0.097 and 3.5 W/mK. It was shown that waste materials such as seashells and banana peel can be used to obtain cost-effective thermal insulation in buildings.",
journal = "Materials",
title = "Fabrication of Porous Anorthite Ceramic Insulation Using Solid Wastes",
volume = "17",
number = "7",
pages = "1478",
doi = "10.3390/ma17071478"
}

Omerašević, M., Pavkov, V., Rosić, M., Egerić, M., Nenadović, S., Bučevac, D.,& Potkonjak, N.. (2024). Fabrication of Porous Anorthite Ceramic Insulation Using Solid Wastes. in Materials, 17(7), 1478.
https://doi.org/10.3390/ma17071478

Omerašević M, Pavkov V, Rosić M, Egerić M, Nenadović S, Bučevac D, Potkonjak N. Fabrication of Porous Anorthite Ceramic Insulation Using Solid Wastes. in Materials. 2024;17(7):1478.
doi:10.3390/ma17071478 .

Omerašević, Mia, Pavkov, Vladimir, Rosić, Milena, Egerić, Marija, Nenadović, Snežana, Bučevac, Dušan, Potkonjak, Nebojša, "Fabrication of Porous Anorthite Ceramic Insulation Using Solid Wastes" in Materials, 17, no. 7 (2024):1478,
https://doi.org/10.3390/ma17071478 . .

TY  - CONF
AU  - Luković, Aleksa
AU  - Pavkov, Vladimir
AU  - Matović, Branko
AU  - Nidžović, Emilija
AU  - Prekajski-Đorđević, Marija
AU  - Maletaškić, Jelena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11626
AB  - Two series of glass-ceramic composites (basalt/mine tailings, basalt/basalt fibers) as well as one pure glass-ceramic were prepared from basalt rocks located in the SE part of Serbia (Lukovska Banja). Both composites contained 85, 90 and 95 wt.% basalt glass respectively. The basalt glass was obtained from initial melting of basalt at 1300 °C. In the present study, the crystallization process of basalt glass contained in the glass-ceramic composite, achieved by thermal treatment, was observed, and analyzed. The thermal treatment was done at 900 °C, 950 °C, 1000 °C and 1050 °C respectively, with the retention times of 1, 3, 6, 8 and 16 hours. It was found that the addition of mine tailings and basalt fibers caused a change in the density and microstructure. The study also showed that the best mechanical and structural characteristics of the examined glassceramics were attained at the temperature of 1050 °C, with the retention time of 1 hour. Additionally, structural and optical characteristics of the glass-ceramics were assessed.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - Basalt-based glass-ceramic composites
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11626
ER  - 

@conference{
author = "Luković, Aleksa and Pavkov, Vladimir and Matović, Branko and Nidžović, Emilija and Prekajski-Đorđević, Marija and Maletaškić, Jelena",
year = "2023",
abstract = "Two series of glass-ceramic composites (basalt/mine tailings, basalt/basalt fibers) as well as one pure glass-ceramic were prepared from basalt rocks located in the SE part of Serbia (Lukovska Banja). Both composites contained 85, 90 and 95 wt.% basalt glass respectively. The basalt glass was obtained from initial melting of basalt at 1300 °C. In the present study, the crystallization process of basalt glass contained in the glass-ceramic composite, achieved by thermal treatment, was observed, and analyzed. The thermal treatment was done at 900 °C, 950 °C, 1000 °C and 1050 °C respectively, with the retention times of 1, 3, 6, 8 and 16 hours. It was found that the addition of mine tailings and basalt fibers caused a change in the density and microstructure. The study also showed that the best mechanical and structural characteristics of the examined glassceramics were attained at the temperature of 1050 °C, with the retention time of 1 hour. Additionally, structural and optical characteristics of the glass-ceramics were assessed.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Basalt-based glass-ceramic composites",
pages = "77",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11626"
}

Luković, A., Pavkov, V., Matović, B., Nidžović, E., Prekajski-Đorđević, M.,& Maletaškić, J.. (2023). Basalt-based glass-ceramic composites. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 77.
https://hdl.handle.net/21.15107/rcub_vinar_11626

Luković A, Pavkov V, Matović B, Nidžović E, Prekajski-Đorđević M, Maletaškić J. Basalt-based glass-ceramic composites. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:77.
https://hdl.handle.net/21.15107/rcub_vinar_11626 .

Luković, Aleksa, Pavkov, Vladimir, Matović, Branko, Nidžović, Emilija, Prekajski-Đorđević, Marija, Maletaškić, Jelena, "Basalt-based glass-ceramic composites" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):77,
https://hdl.handle.net/21.15107/rcub_vinar_11626 .

TY  - THES
AU  - Pavkov, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11658
AB  - Истраживања у докторској дисертацији посвећена су оптимизацији параметара металургије праха у циљу синтетисања и карактеризације нових композитних материјала високе густине за индустријску примену. Синтетисање композитних материјала имало је за циљ повећање жилавости лома и спречавање катастрофалног лома у стакло-керамичким материјалима уз присуство металног ојачавача као и добијање материјала постојаних у корозионој средини попут воде и киселе кише. Експериментална истраживања се састоје из три дела према групи синтерованих материјала од којих сваки као полазну сировину користи андезит базалт из Републике Србије. У првом делу је приказана синтеза материјала на бази стакло-керамика од андезит базалта. У другом делу је приказана синтеза композитних материјала на бази стакло-керамика-метал, са стакло-керамичком матрицом од андезит базалта и ојачавачем од нерђајућег челика 316L. У трећем делу је приказана синтеза композитних материјала на бази метал-стакло, са металном матрицом од челика 316L и стакластим ојачавачем од андезит базалта. Укупно је синтетисано 20 различитих материјала. Методе коришћене за карактеризацију материјала су: одређивање хемијског састава применом енергијске дисперзионе спектрометријске анализе, фазна анализа применом методе рендгенске дифракције, расподела величинe честица праха применом методе дифракције ласерске светлости и ситовне анализе, густина праха применом пикнометарске методе, релативна густина синтерованих узорака применом Архимедове методе, микроструктурна карактеризација применом оптичке и скенирајуће електронске микроскопије, мерење тврдоће и одређивање жилавости лома Викерсовом методом, док је концентрација отпуштених металних јона у раствору киселе кише одређена оптичком емисионом спектрометријом са индуктивно спрегнутом плазмом.
AB  - The research in the doctoral dissertation is focused on the optimization of the powder metallurgy parameters with the aim of synthesising new high-density composite materials and their characterization for industrial applications. The synthesis of the composite materials aimed to increase fracture toughness and prevent catastrophic fracture in the glass-ceramic materials with metal reinforcement, as well as to obtain materials resistant to corrosive environments such as water and acid rain. The experimental research consists of three parts according to the group of sintered materials, with each of them using andesite basalt from the Republic of Serbia as a starting material. In the first part, the synthesis of the materials based on glass-ceramic from andesite basalt was presented. In the second part, the synthesis of the composite materials based on glass-ceramic-metal, with a glass-ceramic matrix of andesite basalt and the reinforcement of stainless steel 316L was presented. In the third part, the synthesis of the composite materials based on metal-glass with a metal matrix of the stainless steel 316L and a glassy reinforcement of the andesite basalt was presented. A total of 20 different materials were synthesised. The methods used for material characterization were: the determination of chemical composition by energy dispersive spectrometric analysis, phase analysis by the X-ray diffraction method, powder particle size distribution by the laser light diffraction method and the sieve analysis, the powder density using the pycnometer method, the relative density of sintered samples using the Archimedesʼ principle, microstructural characterization by optical and scanning electron microscopy, hardness measurement and determination of fracture toughness by the Vickers method, while the concentration of released metal ions in the acid rain solution was determined by optical emission spectrometry with inductively coupled plasma.
PB  - Универзитет у Београду, Машински факултет
T2  - Универзитет у Београду
T1  - Синтеза и карактеризација композитних материјала на бази метал-стакло-керамика
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11658
ER  - 

@phdthesis{
author = "Pavkov, Vladimir",
year = "2023",
abstract = "Истраживања у докторској дисертацији посвећена су оптимизацији параметара металургије праха у циљу синтетисања и карактеризације нових композитних материјала високе густине за индустријску примену. Синтетисање композитних материјала имало је за циљ повећање жилавости лома и спречавање катастрофалног лома у стакло-керамичким материјалима уз присуство металног ојачавача као и добијање материјала постојаних у корозионој средини попут воде и киселе кише. Експериментална истраживања се састоје из три дела према групи синтерованих материјала од којих сваки као полазну сировину користи андезит базалт из Републике Србије. У првом делу је приказана синтеза материјала на бази стакло-керамика од андезит базалта. У другом делу је приказана синтеза композитних материјала на бази стакло-керамика-метал, са стакло-керамичком матрицом од андезит базалта и ојачавачем од нерђајућег челика 316L. У трећем делу је приказана синтеза композитних материјала на бази метал-стакло, са металном матрицом од челика 316L и стакластим ојачавачем од андезит базалта. Укупно је синтетисано 20 различитих материјала. Методе коришћене за карактеризацију материјала су: одређивање хемијског састава применом енергијске дисперзионе спектрометријске анализе, фазна анализа применом методе рендгенске дифракције, расподела величинe честица праха применом методе дифракције ласерске светлости и ситовне анализе, густина праха применом пикнометарске методе, релативна густина синтерованих узорака применом Архимедове методе, микроструктурна карактеризација применом оптичке и скенирајуће електронске микроскопије, мерење тврдоће и одређивање жилавости лома Викерсовом методом, док је концентрација отпуштених металних јона у раствору киселе кише одређена оптичком емисионом спектрометријом са индуктивно спрегнутом плазмом., The research in the doctoral dissertation is focused on the optimization of the powder metallurgy parameters with the aim of synthesising new high-density composite materials and their characterization for industrial applications. The synthesis of the composite materials aimed to increase fracture toughness and prevent catastrophic fracture in the glass-ceramic materials with metal reinforcement, as well as to obtain materials resistant to corrosive environments such as water and acid rain. The experimental research consists of three parts according to the group of sintered materials, with each of them using andesite basalt from the Republic of Serbia as a starting material. In the first part, the synthesis of the materials based on glass-ceramic from andesite basalt was presented. In the second part, the synthesis of the composite materials based on glass-ceramic-metal, with a glass-ceramic matrix of andesite basalt and the reinforcement of stainless steel 316L was presented. In the third part, the synthesis of the composite materials based on metal-glass with a metal matrix of the stainless steel 316L and a glassy reinforcement of the andesite basalt was presented. A total of 20 different materials were synthesised. The methods used for material characterization were: the determination of chemical composition by energy dispersive spectrometric analysis, phase analysis by the X-ray diffraction method, powder particle size distribution by the laser light diffraction method and the sieve analysis, the powder density using the pycnometer method, the relative density of sintered samples using the Archimedesʼ principle, microstructural characterization by optical and scanning electron microscopy, hardness measurement and determination of fracture toughness by the Vickers method, while the concentration of released metal ions in the acid rain solution was determined by optical emission spectrometry with inductively coupled plasma.",
publisher = "Универзитет у Београду, Машински факултет",
journal = "Универзитет у Београду",
title = "Синтеза и карактеризација композитних материјала на бази метал-стакло-керамика",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11658"
}

Pavkov, V.. (2023). Синтеза и карактеризација композитних материјала на бази метал-стакло-керамика. in Универзитет у Београду
Универзитет у Београду, Машински факултет..
https://hdl.handle.net/21.15107/rcub_vinar_11658

Pavkov V. Синтеза и карактеризација композитних материјала на бази метал-стакло-керамика. in Универзитет у Београду. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_11658 .

Pavkov, Vladimir, "Синтеза и карактеризација композитних материјала на бази метал-стакло-керамика" in Универзитет у Београду (2023),
https://hdl.handle.net/21.15107/rcub_vinar_11658 .

TY  - CONF
AU  - Stoiljković, Milovan
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Luković, Aleksa
AU  - Maksimović, Vesna
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11563
AB  - In this work, the basalt deposits site from southern Serbia was used as a matrix for the composite materials. The corrosion behavior of basalt matrix composites with various ratios of commercial stainless steel 316L (5, 10, 15, and 20 wt.%) and bulk basalt produced by sintering in the air (t=1060ºC and τ=60 min) were studied by immersion corrosion technique. The samples were immersed in a solution of artificial acid rain H2SO4:HNO3 = 9:1 at ≈ pH 3 to measure the concentration of released metal ions using inductively coupled plasma-optical emission spectrometry (ICP-OES). The elements Fe, Cr, Mn, and Ni were monitored, while the others were below the limit of quantification. The concentrations of the metal ions in the solution were studied over 15 weeks. The ions release rate from all the sintered samples was found to follow the Weibull cumulative distribution function (CDF). This means that the release rate changes over time and allows us to calculate the characteristic times of ion release. The changes in the samples were monitored by light microscopy (LM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and weight loss. Sintered basalt shows high resistance to corrosion with a characteristic time of about 18 years for Fe and more than 25 years for Cr and Mn. The weight difference between the initial and after 15 weeks of exposure to the solution (sintered basalt) was not observed. On the other hand, the presence of 5 wt.% steel powder in the sintered basalt accelerates the release of metal ions by about six times. When the steel powder content in the composite materials increases, the metal release rate does not change further, but a weight loss is observed. The characteristic times for Fe, Cr, Ni, and Mn in composite materials are about 5 years. These composite materials can be investigated as materials for using in an acid environment.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia (AMES)
C3  - MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina
T1  - Corrosion of Ceramic-Metal Composites in Artificial Acid Rain
SP  - 73
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11563
ER  - 

@conference{
author = "Stoiljković, Milovan and Pavkov, Vladimir and Bakić, Gordana and Luković, Aleksa and Maksimović, Vesna",
year = "2023",
abstract = "In this work, the basalt deposits site from southern Serbia was used as a matrix for the composite materials. The corrosion behavior of basalt matrix composites with various ratios of commercial stainless steel 316L (5, 10, 15, and 20 wt.%) and bulk basalt produced by sintering in the air (t=1060ºC and τ=60 min) were studied by immersion corrosion technique. The samples were immersed in a solution of artificial acid rain H2SO4:HNO3 = 9:1 at ≈ pH 3 to measure the concentration of released metal ions using inductively coupled plasma-optical emission spectrometry (ICP-OES). The elements Fe, Cr, Mn, and Ni were monitored, while the others were below the limit of quantification. The concentrations of the metal ions in the solution were studied over 15 weeks. The ions release rate from all the sintered samples was found to follow the Weibull cumulative distribution function (CDF). This means that the release rate changes over time and allows us to calculate the characteristic times of ion release. The changes in the samples were monitored by light microscopy (LM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and weight loss. Sintered basalt shows high resistance to corrosion with a characteristic time of about 18 years for Fe and more than 25 years for Cr and Mn. The weight difference between the initial and after 15 weeks of exposure to the solution (sintered basalt) was not observed. On the other hand, the presence of 5 wt.% steel powder in the sintered basalt accelerates the release of metal ions by about six times. When the steel powder content in the composite materials increases, the metal release rate does not change further, but a weight loss is observed. The characteristic times for Fe, Cr, Ni, and Mn in composite materials are about 5 years. These composite materials can be investigated as materials for using in an acid environment.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia (AMES)",
journal = "MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina",
title = "Corrosion of Ceramic-Metal Composites in Artificial Acid Rain",
pages = "73-73",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11563"
}

Stoiljković, M., Pavkov, V., Bakić, G., Luković, A.,& Maksimović, V.. (2023). Corrosion of Ceramic-Metal Composites in Artificial Acid Rain. in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina
Belgrade : Association of Metallurgical Engineers of Serbia (AMES)., 73-73.
https://hdl.handle.net/21.15107/rcub_vinar_11563

Stoiljković M, Pavkov V, Bakić G, Luković A, Maksimović V. Corrosion of Ceramic-Metal Composites in Artificial Acid Rain. in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina. 2023;:73-73.
https://hdl.handle.net/21.15107/rcub_vinar_11563 .

Stoiljković, Milovan, Pavkov, Vladimir, Bakić, Gordana, Luković, Aleksa, Maksimović, Vesna, "Corrosion of Ceramic-Metal Composites in Artificial Acid Rain" in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina (2023):73-73,
https://hdl.handle.net/21.15107/rcub_vinar_11563 .

TY  - CONF
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
AU  - Stoiljković, Milovan
AU  - Luković, A.
AU  - Bakić, G.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11628
AB  - Ceramic materials are often used in very aggressive and corrosive environments due to their high chemical inertness and corrosion resistance. However, even if corrosion progresses slowly, it still occurs. Corrosion usually depends on the structural properties of the materials. For example, more compact or tightly bonded materials corrode less, whether glass or crystalline materials. With the dramatic increase in nitrogen and sulphide oxide emissions, acid rain pollution has become one of the world's biggest environmental problems. One of the methods used to measure the corrosion resistance of ceramic materials and ceramic matrix composites (CMCs) is the immersion method, which studies their behaviour by immersing them in corrosive media and measuring the concentration of ions released. Adding different particles to basalt before sintering to obtain CMCs can increase fracture toughness. The aim of this work was to investigate the effects of the content of 316L stainless steel powder in sintered basalt on its structural properties and resistance to the release of metal ions in acidic environments. The andesite-basalt-based samples were prepared by adding 5, 10, 15, and 20 wt.% of steel powder, respectively, before sintering. The basalt aggregate and the pure sintered basalt served as reference materials. The metal concentrations in the solution were studied for 15 weeks at room temperature and a pH of 3.13±0.01. The major elements Fe, Cr, Mn, and Ni were monitored, while the others were below the limit of quantification. We found that the concentration of metal ions released from the basalt aggregate increases exponentially, implying that the release rate is constant over time. However, the concentration of metal ions released from the sintered samples follows the Weibull cumulative distribution function (CDF), which means that the release rate changes over time and allows us to calculate the characteristic times of ion release. The presence of 5 wt.% steel powder in the sintered basalt accelerates the release of metal ions by about six times. If the steel powder content increases, the metal release rate does not change further. These findings are positive since the highest toughness of sintered basalt is expressed at 20 wt.% of steel powder. The corrosion stability of glass-ceramic-metal-based composites was found to be satisfactory compared to natural andesite-basalt aggregate. These composites can be used in conditions of acid rain exposure where higher fracture toughness is required.
PB  - Slovak Republic : Institute of Inorganic Chemistry, SAS
C3  - EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics
T1  - Effect of acidic environment on glass-ceramic-metal composite materials
SP  - 35
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11628
ER  - 

@conference{
author = "Maksimović, Vesna and Pavkov, Vladimir and Stoiljković, Milovan and Luković, A. and Bakić, G.",
year = "2023",
abstract = "Ceramic materials are often used in very aggressive and corrosive environments due to their high chemical inertness and corrosion resistance. However, even if corrosion progresses slowly, it still occurs. Corrosion usually depends on the structural properties of the materials. For example, more compact or tightly bonded materials corrode less, whether glass or crystalline materials. With the dramatic increase in nitrogen and sulphide oxide emissions, acid rain pollution has become one of the world's biggest environmental problems. One of the methods used to measure the corrosion resistance of ceramic materials and ceramic matrix composites (CMCs) is the immersion method, which studies their behaviour by immersing them in corrosive media and measuring the concentration of ions released. Adding different particles to basalt before sintering to obtain CMCs can increase fracture toughness. The aim of this work was to investigate the effects of the content of 316L stainless steel powder in sintered basalt on its structural properties and resistance to the release of metal ions in acidic environments. The andesite-basalt-based samples were prepared by adding 5, 10, 15, and 20 wt.% of steel powder, respectively, before sintering. The basalt aggregate and the pure sintered basalt served as reference materials. The metal concentrations in the solution were studied for 15 weeks at room temperature and a pH of 3.13±0.01. The major elements Fe, Cr, Mn, and Ni were monitored, while the others were below the limit of quantification. We found that the concentration of metal ions released from the basalt aggregate increases exponentially, implying that the release rate is constant over time. However, the concentration of metal ions released from the sintered samples follows the Weibull cumulative distribution function (CDF), which means that the release rate changes over time and allows us to calculate the characteristic times of ion release. The presence of 5 wt.% steel powder in the sintered basalt accelerates the release of metal ions by about six times. If the steel powder content increases, the metal release rate does not change further. These findings are positive since the highest toughness of sintered basalt is expressed at 20 wt.% of steel powder. The corrosion stability of glass-ceramic-metal-based composites was found to be satisfactory compared to natural andesite-basalt aggregate. These composites can be used in conditions of acid rain exposure where higher fracture toughness is required.",
publisher = "Slovak Republic : Institute of Inorganic Chemistry, SAS",
journal = "EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics",
title = "Effect of acidic environment on glass-ceramic-metal composite materials",
pages = "35",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11628"
}

Maksimović, V., Pavkov, V., Stoiljković, M., Luković, A.,& Bakić, G.. (2023). Effect of acidic environment on glass-ceramic-metal composite materials. in EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics
Slovak Republic : Institute of Inorganic Chemistry, SAS., 35.
https://hdl.handle.net/21.15107/rcub_vinar_11628

Maksimović V, Pavkov V, Stoiljković M, Luković A, Bakić G. Effect of acidic environment on glass-ceramic-metal composite materials. in EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics. 2023;:35.
https://hdl.handle.net/21.15107/rcub_vinar_11628 .

Maksimović, Vesna, Pavkov, Vladimir, Stoiljković, Milovan, Luković, A., Bakić, G., "Effect of acidic environment on glass-ceramic-metal composite materials" in EngCer 2023 : The Advanced Research Workshop: Engineering Ceramics (2023):35,
https://hdl.handle.net/21.15107/rcub_vinar_11628 .

TY  - JOUR
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Bučevac, Dušan
AU  - Matović, Branko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11323
AB  - This paper presents the technological process for obtaining basalt-stainless steel composite materials and testing their physical and mechanical properties. The phases of the technological process consist of: milling, homogenization, pressing, and sintering to obtain composite materials with improved fracture toughness. Andesite basalt from the deposit site "Donje Jarinje", Serbia, was used as a matrix in the composites, while commercial austenitic stainless steel 316L in the amount of 0-30 wt.% was used as a reinforcement. Although the increase of 316L amount caused a continuous decrease in the relative density of sintered samples, the relative density of sample containing 30 wt.% of 316L was above 94%. The 316L grains, which possess a larger coefficient of thermal expansion than the basalt matrix, shrinking faster during cooling from sintering temperature resulting in the formation of compressive residual stress in the basalt matrix surrounding the spherical steel grains. The presence of this stress activated toughening mechanisms such as crack deflection and toughening due to compressive residual stress. The addition of 20 wt.% of reinforcing 316L particles increased the fracture toughness of basalt by more than 30%. The relative density of these samples was measured to be 97%, whereas macrohardness was found to be 6.2 GPa.
T2  - Science of Sintering
T1  - Novel basalt-stainless steel composite materials with improved fracture toughness
VL  - 55
IS  - 2
SP  - 145
EP  - 158
DO  - 10.2298/SOS220429002P
ER  - 

@article{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Bučevac, Dušan and Matović, Branko",
year = "2023",
abstract = "This paper presents the technological process for obtaining basalt-stainless steel composite materials and testing their physical and mechanical properties. The phases of the technological process consist of: milling, homogenization, pressing, and sintering to obtain composite materials with improved fracture toughness. Andesite basalt from the deposit site "Donje Jarinje", Serbia, was used as a matrix in the composites, while commercial austenitic stainless steel 316L in the amount of 0-30 wt.% was used as a reinforcement. Although the increase of 316L amount caused a continuous decrease in the relative density of sintered samples, the relative density of sample containing 30 wt.% of 316L was above 94%. The 316L grains, which possess a larger coefficient of thermal expansion than the basalt matrix, shrinking faster during cooling from sintering temperature resulting in the formation of compressive residual stress in the basalt matrix surrounding the spherical steel grains. The presence of this stress activated toughening mechanisms such as crack deflection and toughening due to compressive residual stress. The addition of 20 wt.% of reinforcing 316L particles increased the fracture toughness of basalt by more than 30%. The relative density of these samples was measured to be 97%, whereas macrohardness was found to be 6.2 GPa.",
journal = "Science of Sintering",
title = "Novel basalt-stainless steel composite materials with improved fracture toughness",
volume = "55",
number = "2",
pages = "145-158",
doi = "10.2298/SOS220429002P"
}

Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I., Bučevac, D.,& Matović, B.. (2023). Novel basalt-stainless steel composite materials with improved fracture toughness. in Science of Sintering, 55(2), 145-158.
https://doi.org/10.2298/SOS220429002P

Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Bučevac D, Matović B. Novel basalt-stainless steel composite materials with improved fracture toughness. in Science of Sintering. 2023;55(2):145-158.
doi:10.2298/SOS220429002P .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Bučevac, Dušan, Matović, Branko, "Novel basalt-stainless steel composite materials with improved fracture toughness" in Science of Sintering, 55, no. 2 (2023):145-158,
https://doi.org/10.2298/SOS220429002P . .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Prekajski-Đorđević, Marija D.
AU  - Bučevac, Dušan
AU  - Matović, Branko
AU  - Rakin, Marko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11345
AB  - In modern industry, there is an increasing demand for environmentally friendly and light structural materials with good physical and mechanical properties, produced from cheap natural raw materials available in large quantities. One of the materials that meet the mentioned criteria is basalt. Basalt is a natural igneous rock of volcanic origin, created by the pouring of magma on the Earth's surface, the amount of which is significant in the territory of Serbia. Since basalt does not exhibit toxic, carcinogenic, or mutagenic effects, it is in the true sense a non-hazardous material and belongs to the group of eco-friendly materials. In this research, andesite basalt aggregate from the "Donje Jarinje" site, in Serbia, was used to obtain high-density glass-ceramic materials. High-density glass-ceramic materials were obtained by powder metallurgy process, which consisted of the following methods: dry grinding, homogenization, cold uniaxial and isostatic powder pressing and sintering in the air. In order to achieve a high-density of the materials, the green compacts were sintered in the temperature range from 1040 to 1080 °C. After confirming that the highest density materials were achieved at the sintering temperature of 1060 °C, the sintering time was optimized in the time interval from 30 to 240 min. After the experimental test, the optimal sintering parameters for obtaining high-density glass-ceramic material at the temperature of 1060 °C for 60 min were achieved, whose relative density is 99.50%, and hardness is 6.70 GPa. The characterization of andesite basalt powder was performed using the laser light diffraction method, scanning electron microscopy and X-ray diffraction method, while the characterization of sintered glass-ceramic materials was performed using the Archimedes method, X-ray diffraction method, optical light microscopy and Vickers hardness test. The results of this research confirmed that by applying powder metallurgy and sintering in the air, high-density glass-ceramic materials could be obtained for various industrial applications in the civil engineering, chemical and food industries, as well as for the making of containers for the storage of nuclear waste. Also, high-density glass-ceramic materials would be suitable for making a matrix in modern composite materials.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia (AMES)
C3  - MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina
T1  - High-Density Glass-Ceramic Materials Obtained by Powder Metallurgy
SP  - 48
EP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11345
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Prekajski-Đorđević, Marija D. and Bučevac, Dušan and Matović, Branko and Rakin, Marko",
year = "2023",
abstract = "In modern industry, there is an increasing demand for environmentally friendly and light structural materials with good physical and mechanical properties, produced from cheap natural raw materials available in large quantities. One of the materials that meet the mentioned criteria is basalt. Basalt is a natural igneous rock of volcanic origin, created by the pouring of magma on the Earth's surface, the amount of which is significant in the territory of Serbia. Since basalt does not exhibit toxic, carcinogenic, or mutagenic effects, it is in the true sense a non-hazardous material and belongs to the group of eco-friendly materials. In this research, andesite basalt aggregate from the "Donje Jarinje" site, in Serbia, was used to obtain high-density glass-ceramic materials. High-density glass-ceramic materials were obtained by powder metallurgy process, which consisted of the following methods: dry grinding, homogenization, cold uniaxial and isostatic powder pressing and sintering in the air. In order to achieve a high-density of the materials, the green compacts were sintered in the temperature range from 1040 to 1080 °C. After confirming that the highest density materials were achieved at the sintering temperature of 1060 °C, the sintering time was optimized in the time interval from 30 to 240 min. After the experimental test, the optimal sintering parameters for obtaining high-density glass-ceramic material at the temperature of 1060 °C for 60 min were achieved, whose relative density is 99.50%, and hardness is 6.70 GPa. The characterization of andesite basalt powder was performed using the laser light diffraction method, scanning electron microscopy and X-ray diffraction method, while the characterization of sintered glass-ceramic materials was performed using the Archimedes method, X-ray diffraction method, optical light microscopy and Vickers hardness test. The results of this research confirmed that by applying powder metallurgy and sintering in the air, high-density glass-ceramic materials could be obtained for various industrial applications in the civil engineering, chemical and food industries, as well as for the making of containers for the storage of nuclear waste. Also, high-density glass-ceramic materials would be suitable for making a matrix in modern composite materials.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia (AMES)",
journal = "MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina",
title = "High-Density Glass-Ceramic Materials Obtained by Powder Metallurgy",
pages = "48-48",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11345"
}

Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I., Prekajski-Đorđević, M. D., Bučevac, D., Matović, B.,& Rakin, M.. (2023). High-Density Glass-Ceramic Materials Obtained by Powder Metallurgy. in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina
Belgrade : Association of Metallurgical Engineers of Serbia (AMES)., 48-48.
https://hdl.handle.net/21.15107/rcub_vinar_11345

Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Prekajski-Đorđević MD, Bučevac D, Matović B, Rakin M. High-Density Glass-Ceramic Materials Obtained by Powder Metallurgy. in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina. 2023;:48-48.
https://hdl.handle.net/21.15107/rcub_vinar_11345 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Prekajski-Đorđević, Marija D., Bučevac, Dušan, Matović, Branko, Rakin, Marko, "High-Density Glass-Ceramic Materials Obtained by Powder Metallurgy" in MME SEE : 5th Metallurgical & Materials Engineering Congress of South-East Europe, June 7-10, 2023; Trebinje, Bosnia and Herzegovina (2023):48-48,
https://hdl.handle.net/21.15107/rcub_vinar_11345 .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Bučevac, Dušan
AU  - Prekajski-Đorđević, Marija D.
AU  - Cvijović-Alagić, Ivana
AU  - Matović, Branko
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11347
AB  - The industrial requirements in the 21st century are environmentally friendly and light construction materials with good physical-mechanical properties manufactured from cheap natural raw materials available in large quantities. One of these materials is basalt. Basalt is a natural igneous rock of volcanic origin, with a significant amount in Serbia. Basalt belongs to the group of non-hazardous and eco-friendly materials. Andesite basalt aggregate from the "Donje Jarinje" site, Serbia, was used as the starting natural raw material for obtaining the glass-ceramic material. The aggregate is from 2 to 5 mm in size. The aggregate was milled in the tungsten-carbide vibrating cup mill for 30 min to obtain a fine powder for synthesis. The homogenization of andesite basalt powder and binder was carried out in the mortar and pestle for 10 min. The paraplast was used as a binder with a content of 0.6 wt.%. After that, uniaxial pressing of the powder at a pressure of 50 MPa was performed. A forming green compact, cold isostatic pressing was performed with a pressure of 230 MPa to increase its density. The sintering was carried out at the temperature of 1060 °C for 60 min in the air. The sintered glass-ceramic sample was a relative density of 99.5%, a macrohardness of 6.7 GPa and a fracture toughness of 2.2 MPa·m1/2 [1]. The andesite basalt powder was characterized using the laser light diffraction method, X-ray diffraction method and scanning electron microscopy. Sintered glassceramic material was characterized using the X-ray diffraction method, Archimedes principle, scanning electron and optical light microscopy and the Vickers hardness test. The glass-ceramic material obtained by sintering andesite basalt powder could be used for various industrial applications in the civil engineering, mechanical, chemical, and petrochemical industries, as well as for the making of containers to store nuclear waste.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
T1  - Andesite Basalt as a Natural Raw Material for Obtaining Glass-Ceramics
SP  - 87
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11347
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Bučevac, Dušan and Prekajski-Đorđević, Marija D. and Cvijović-Alagić, Ivana and Matović, Branko",
year = "2023",
abstract = "The industrial requirements in the 21st century are environmentally friendly and light construction materials with good physical-mechanical properties manufactured from cheap natural raw materials available in large quantities. One of these materials is basalt. Basalt is a natural igneous rock of volcanic origin, with a significant amount in Serbia. Basalt belongs to the group of non-hazardous and eco-friendly materials. Andesite basalt aggregate from the "Donje Jarinje" site, Serbia, was used as the starting natural raw material for obtaining the glass-ceramic material. The aggregate is from 2 to 5 mm in size. The aggregate was milled in the tungsten-carbide vibrating cup mill for 30 min to obtain a fine powder for synthesis. The homogenization of andesite basalt powder and binder was carried out in the mortar and pestle for 10 min. The paraplast was used as a binder with a content of 0.6 wt.%. After that, uniaxial pressing of the powder at a pressure of 50 MPa was performed. A forming green compact, cold isostatic pressing was performed with a pressure of 230 MPa to increase its density. The sintering was carried out at the temperature of 1060 °C for 60 min in the air. The sintered glass-ceramic sample was a relative density of 99.5%, a macrohardness of 6.7 GPa and a fracture toughness of 2.2 MPa·m1/2 [1]. The andesite basalt powder was characterized using the laser light diffraction method, X-ray diffraction method and scanning electron microscopy. Sintered glassceramic material was characterized using the X-ray diffraction method, Archimedes principle, scanning electron and optical light microscopy and the Vickers hardness test. The glass-ceramic material obtained by sintering andesite basalt powder could be used for various industrial applications in the civil engineering, mechanical, chemical, and petrochemical industries, as well as for the making of containers to store nuclear waste.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts",
title = "Andesite Basalt as a Natural Raw Material for Obtaining Glass-Ceramics",
pages = "87",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11347"
}

Pavkov, V., Bakić, G., Maksimović, V., Bučevac, D., Prekajski-Đorđević, M. D., Cvijović-Alagić, I.,& Matović, B.. (2023). Andesite Basalt as a Natural Raw Material for Obtaining Glass-Ceramics. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 87.
https://hdl.handle.net/21.15107/rcub_vinar_11347

Pavkov V, Bakić G, Maksimović V, Bučevac D, Prekajski-Đorđević MD, Cvijović-Alagić I, Matović B. Andesite Basalt as a Natural Raw Material for Obtaining Glass-Ceramics. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts. 2023;:87.
https://hdl.handle.net/21.15107/rcub_vinar_11347 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Bučevac, Dušan, Prekajski-Đorđević, Marija D., Cvijović-Alagić, Ivana, Matović, Branko, "Andesite Basalt as a Natural Raw Material for Obtaining Glass-Ceramics" in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts (2023):87,
https://hdl.handle.net/21.15107/rcub_vinar_11347 .

TY  - CONF
AU  - Maksimović, Danica
AU  - Pavkov, Vladimir
AU  - Maksimović, Vesna
AU  - Putz, Barbara
AU  - Cvijović-Alagić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11348
AB  - The modern transportation industry is in high demand for lightweight structural components with exceptional mechanical properties that can be obtained by a costeffective production process. These specific industrial requirements can be achieved through the attainment of innovative aluminum matrix composites (AMCs) with improved characteristics in accordance with the circular economy. Solid-state recycling is considered a good solution to attain the above-mentioned industrialdemands since it enables the obtainment of usable and inexpensive raw materials with known chemical composition from industrial waste and therefore supports the cost-effective production of structural components. The present research was, therefore, directed toward the repurposing of waste materials derived from the metal industry and the civil engineering sector through a simple and economical solid-state recycling procedure to obtain raw materials for the production of innovative AMCs with required characteristics. The aluminum 2xxx series alloy, i.e. 2024 alloy, in the form of metallic chips generated during the industrial machining was selected for the obtainment of composite base, while basalt fibers derived from stone mineral wool, as waste material in civil engineering, were used to produce the composite reinforcing phase. Basalt, characterized by high strength and low density, provides improved resistance to chemical and mechanical damage, while the 2024 alloy contributes to good fatigue properties of the final fiber-reinforced AMCs. To obtain usable raw materials for the AMCs preparation from the solid industrial waste the basalt fibers were thermally treated, while aluminum-based metallic chips were ballmilled. Treated aluminum alloy powder and basalt fibers were mixed in a 3D tumbler mixer in a 9:1 ratio, isostatically pressed, and sintered in a protective argon atmosphere at 550 °C. Isostatic pressure and sintering duration were varied during the AMCs preparation to determine the optimal processing parameters for the obtainment of AMCs with the required characteristics for a predetermined purpose. The scanning electron microscopic (SEM), energy dispersive spectroscopic (EDS), and X-ray diffraction (XRD) analyses complemented with hardness and density measurements were conducted to characterize starting and final materials. Obtained composites showed improved mechanical properties compared to the starting aluminum alloy, regardless of the processing conditions. The AMCs processed at a higher pressure and for longer sintering times showed higher density and hardness. The results of the presented research undoubtedly indicated that solid-state recycling, as a simple, energy- and cost-efficient process, can be successfully used for the attainment of innovative composites for lightweight structural components in the transportation industry.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
T1  - Aluminum-Based Composites Reinforced with Ceramic Fibers
SP  - 115
EP  - 116
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11348
ER  - 

@conference{
author = "Maksimović, Danica and Pavkov, Vladimir and Maksimović, Vesna and Putz, Barbara and Cvijović-Alagić, Ivana",
year = "2023",
abstract = "The modern transportation industry is in high demand for lightweight structural components with exceptional mechanical properties that can be obtained by a costeffective production process. These specific industrial requirements can be achieved through the attainment of innovative aluminum matrix composites (AMCs) with improved characteristics in accordance with the circular economy. Solid-state recycling is considered a good solution to attain the above-mentioned industrialdemands since it enables the obtainment of usable and inexpensive raw materials with known chemical composition from industrial waste and therefore supports the cost-effective production of structural components. The present research was, therefore, directed toward the repurposing of waste materials derived from the metal industry and the civil engineering sector through a simple and economical solid-state recycling procedure to obtain raw materials for the production of innovative AMCs with required characteristics. The aluminum 2xxx series alloy, i.e. 2024 alloy, in the form of metallic chips generated during the industrial machining was selected for the obtainment of composite base, while basalt fibers derived from stone mineral wool, as waste material in civil engineering, were used to produce the composite reinforcing phase. Basalt, characterized by high strength and low density, provides improved resistance to chemical and mechanical damage, while the 2024 alloy contributes to good fatigue properties of the final fiber-reinforced AMCs. To obtain usable raw materials for the AMCs preparation from the solid industrial waste the basalt fibers were thermally treated, while aluminum-based metallic chips were ballmilled. Treated aluminum alloy powder and basalt fibers were mixed in a 3D tumbler mixer in a 9:1 ratio, isostatically pressed, and sintered in a protective argon atmosphere at 550 °C. Isostatic pressure and sintering duration were varied during the AMCs preparation to determine the optimal processing parameters for the obtainment of AMCs with the required characteristics for a predetermined purpose. The scanning electron microscopic (SEM), energy dispersive spectroscopic (EDS), and X-ray diffraction (XRD) analyses complemented with hardness and density measurements were conducted to characterize starting and final materials. Obtained composites showed improved mechanical properties compared to the starting aluminum alloy, regardless of the processing conditions. The AMCs processed at a higher pressure and for longer sintering times showed higher density and hardness. The results of the presented research undoubtedly indicated that solid-state recycling, as a simple, energy- and cost-efficient process, can be successfully used for the attainment of innovative composites for lightweight structural components in the transportation industry.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts",
title = "Aluminum-Based Composites Reinforced with Ceramic Fibers",
pages = "115-116",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11348"
}

Maksimović, D., Pavkov, V., Maksimović, V., Putz, B.,& Cvijović-Alagić, I.. (2023). Aluminum-Based Composites Reinforced with Ceramic Fibers. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 115-116.
https://hdl.handle.net/21.15107/rcub_vinar_11348

Maksimović D, Pavkov V, Maksimović V, Putz B, Cvijović-Alagić I. Aluminum-Based Composites Reinforced with Ceramic Fibers. in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts. 2023;:115-116.
https://hdl.handle.net/21.15107/rcub_vinar_11348 .

Maksimović, Danica, Pavkov, Vladimir, Maksimović, Vesna, Putz, Barbara, Cvijović-Alagić, Ivana, "Aluminum-Based Composites Reinforced with Ceramic Fibers" in 7CSCS-2023 : 7th Conference of The Serbian Society for Ceramic Materials : Book of abstracts (2023):115-116,
https://hdl.handle.net/21.15107/rcub_vinar_11348 .

TY  - CONF
AU  - Omerašević, Mia
AU  - Krsmanović, Miomir
AU  - Pavkov, Vladimir
AU  - Radovanović, Željko
AU  - Egerić, Marija
AU  - Nenadović, Snežana
AU  - Bučevac, Dušan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11627
AB  - There is a global tendency to reduce the consumption of energy required for heating as well
as cooling buildings. Therefore, thermal insulation technology becoming important in
preventing both, the gain and loss of heat through the building envelope. This work aims to
evaluate the feasibility of using inexpensive raw materials such as kaolin and waste material
such as seashells and banana peel for fabrication of the sustainable anorthite-based porous
ceramics for thermal insulation. Kaolin was used as a source of Al2O3 and SiO2, seashells as a
source of CaO whereas banana peel was used as a pore former. The phase composition, bulk
density, open porosity, compressive strength, microstructure, and thermal conductivity of the
ceramic samples, were analyzed. The obtained results showed that the variation of pore former (banana peel) content and sintering temperature was an effective way to control the
thermo-mechanical properties of the obtained anorthite ceramics. Samples with open porosity
(1.4 – 45%), compressive strength (>15 MPa), bulk density (1.87-2.62 g/cm3
), and thermal
conductivity (0.097-3.67W/mK) were obtained after sintering of samples with different
percent of banana peel at 1100–1200 ◦C. It suggests that the obtained porous ceramics can be
used for cost-effective thermal insulation of buildings.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Fabrication of porous anorthite-based ceramics using solid wastes for costeffective thermal insulation of buildings
SP  - 61
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11627
ER  - 

@conference{
author = "Omerašević, Mia and Krsmanović, Miomir and Pavkov, Vladimir and Radovanović, Željko and Egerić, Marija and Nenadović, Snežana and Bučevac, Dušan",
year = "2023",
abstract = "There is a global tendency to reduce the consumption of energy required for heating as well
as cooling buildings. Therefore, thermal insulation technology becoming important in
preventing both, the gain and loss of heat through the building envelope. This work aims to
evaluate the feasibility of using inexpensive raw materials such as kaolin and waste material
such as seashells and banana peel for fabrication of the sustainable anorthite-based porous
ceramics for thermal insulation. Kaolin was used as a source of Al2O3 and SiO2, seashells as a
source of CaO whereas banana peel was used as a pore former. The phase composition, bulk
density, open porosity, compressive strength, microstructure, and thermal conductivity of the
ceramic samples, were analyzed. The obtained results showed that the variation of pore former (banana peel) content and sintering temperature was an effective way to control the
thermo-mechanical properties of the obtained anorthite ceramics. Samples with open porosity
(1.4 – 45%), compressive strength (>15 MPa), bulk density (1.87-2.62 g/cm3
), and thermal
conductivity (0.097-3.67W/mK) were obtained after sintering of samples with different
percent of banana peel at 1100–1200 ◦C. It suggests that the obtained porous ceramics can be
used for cost-effective thermal insulation of buildings.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Fabrication of porous anorthite-based ceramics using solid wastes for costeffective thermal insulation of buildings",
pages = "61-62",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11627"
}

Omerašević, M., Krsmanović, M., Pavkov, V., Radovanović, Ž., Egerić, M., Nenadović, S.,& Bučevac, D.. (2023). Fabrication of porous anorthite-based ceramics using solid wastes for costeffective thermal insulation of buildings. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 61-62.
https://hdl.handle.net/21.15107/rcub_vinar_11627

Omerašević M, Krsmanović M, Pavkov V, Radovanović Ž, Egerić M, Nenadović S, Bučevac D. Fabrication of porous anorthite-based ceramics using solid wastes for costeffective thermal insulation of buildings. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:61-62.
https://hdl.handle.net/21.15107/rcub_vinar_11627 .

Omerašević, Mia, Krsmanović, Miomir, Pavkov, Vladimir, Radovanović, Željko, Egerić, Marija, Nenadović, Snežana, Bučevac, Dušan, "Fabrication of porous anorthite-based ceramics using solid wastes for costeffective thermal insulation of buildings" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):61-62,
https://hdl.handle.net/21.15107/rcub_vinar_11627 .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11560
AB  - One of the most responsible elements of modern steam boilers are steam superheaters and reheaters.
These heating surfaces are inside the boiler chamber and consist of tubes connected to the inlet and
outlet header. Due to the complexity of service conditions, boiler tubes are exposed to processes of
gradual degradation, and consequently a decrease in operating performance and reliability.
In the operation of thermal power plants, irreversible metal losses resulting from corrosion can
cause tube failure and plant outage. Considering the loss of materials, gas corrosion in the dry gas
atmosphere due to the high temperature is of great importance. Gas corrosion can be expressed in
the boiler tubing system due to the presence of sulfur compounds in the flue gases. For this reason,
it must be borne in mind that the outer surface of a tube of final reheater has different damage
mechanisms during operation, and one of them is gas corrosion. Gas corrosion causes material loss
and provides a site for crack initiation and propagation, which can compromise the integrity of the
pressure vessel.
In this paper, a tube of a final reheater from a 210 MW power plant was tested. The tube was in
service 200,000 h at a working temperature of 540 °C and a maximum working pressure of 4.6
MPa. The tube is made of low alloy Cr-Mo-V steel, class 12H1MF (GOST). After long-term
service, a rough surface and loss of the material in the form of a crater were observed on the outer
surface of the tube as a result of the effect of gas corrosion, together with the change of
microstructure due to elevated service temperature. The measured depth of damage to the tube is
120 m. The presence of gas corrosion on the tube was confirmed and measured by an optical
microscope, Figure 1.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - Damage to a tube of output reheater due to gas corrosion
SP  - 61
EP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11560
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar and Matović, Branko",
year = "2022",
abstract = "One of the most responsible elements of modern steam boilers are steam superheaters and reheaters.
These heating surfaces are inside the boiler chamber and consist of tubes connected to the inlet and
outlet header. Due to the complexity of service conditions, boiler tubes are exposed to processes of
gradual degradation, and consequently a decrease in operating performance and reliability.
In the operation of thermal power plants, irreversible metal losses resulting from corrosion can
cause tube failure and plant outage. Considering the loss of materials, gas corrosion in the dry gas
atmosphere due to the high temperature is of great importance. Gas corrosion can be expressed in
the boiler tubing system due to the presence of sulfur compounds in the flue gases. For this reason,
it must be borne in mind that the outer surface of a tube of final reheater has different damage
mechanisms during operation, and one of them is gas corrosion. Gas corrosion causes material loss
and provides a site for crack initiation and propagation, which can compromise the integrity of the
pressure vessel.
In this paper, a tube of a final reheater from a 210 MW power plant was tested. The tube was in
service 200,000 h at a working temperature of 540 °C and a maximum working pressure of 4.6
MPa. The tube is made of low alloy Cr-Mo-V steel, class 12H1MF (GOST). After long-term
service, a rough surface and loss of the material in the form of a crater were observed on the outer
surface of the tube as a result of the effect of gas corrosion, together with the change of
microstructure due to elevated service temperature. The measured depth of damage to the tube is
120 m. The presence of gas corrosion on the tube was confirmed and measured by an optical
microscope, Figure 1.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "Damage to a tube of output reheater due to gas corrosion",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11560"
}

Pavkov, V., Bakić, G., Maksimović, V., Đukić, M., Rajičić, B., Maslarević, A.,& Matović, B.. (2022). Damage to a tube of output reheater due to gas corrosion. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 61-61.
https://hdl.handle.net/21.15107/rcub_vinar_11560

Pavkov V, Bakić G, Maksimović V, Đukić M, Rajičić B, Maslarević A, Matović B. Damage to a tube of output reheater due to gas corrosion. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:61-61.
https://hdl.handle.net/21.15107/rcub_vinar_11560 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, Matović, Branko, "Damage to a tube of output reheater due to gas corrosion" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):61-61,
https://hdl.handle.net/21.15107/rcub_vinar_11560 .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Bučevac, Dušan
AU  - Prekajski Đorđević, Marija
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11562
PB  - Belgrade : Materials Research Society of Serbia – MRS-Serbia
C3  - 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts
T1  - Synthesis and characterization of glass-ceramic-metal composite materials obtained by sintering
VL  - XLV
SP  - 104
EP  - 104
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11562
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Bučevac, Dušan and Prekajski Đorđević, Marija and Matović, Branko",
year = "2022",
publisher = "Belgrade : Materials Research Society of Serbia – MRS-Serbia",
journal = "23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts",
title = "Synthesis and characterization of glass-ceramic-metal composite materials obtained by sintering",
volume = "XLV",
pages = "104-104",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11562"
}

Pavkov, V., Bakić, G., Maksimović, V., Bučevac, D., Prekajski Đorđević, M.,& Matović, B.. (2022). Synthesis and characterization of glass-ceramic-metal composite materials obtained by sintering. in 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts
Belgrade : Materials Research Society of Serbia – MRS-Serbia., XLV, 104-104.
https://hdl.handle.net/21.15107/rcub_vinar_11562

Pavkov V, Bakić G, Maksimović V, Bučevac D, Prekajski Đorđević M, Matović B. Synthesis and characterization of glass-ceramic-metal composite materials obtained by sintering. in 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts. 2022;XLV:104-104.
https://hdl.handle.net/21.15107/rcub_vinar_11562 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Bučevac, Dušan, Prekajski Đorđević, Marija, Matović, Branko, "Synthesis and characterization of glass-ceramic-metal composite materials obtained by sintering" in 23rd annual conference - YUCOMAT 2022 & 12th World Round Table Conference on Sintering - WRTCS 2022 : Program and Book of Abstracts, XLV (2022):104-104,
https://hdl.handle.net/21.15107/rcub_vinar_11562 .

TY  - PAT
AU  - Grahovac, Nebojša
AU  - Pavkov, Vladimir
AU  - Stanković, Srboljub
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11660
AB  - Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu je u primeni otpornosti na habanje reznog alata sa dijamantskom prevlakom i površinske hrapavosti obrađivanih površinana definisanje optimalnih režima obrade pomenutih materijala na CNC strugu. Postupak se sastoji od tri faze: 1. Određivanje krive habanja alata sa dijamantskom prevlakom pri mašinskoj obradi legure i kompozita na strugu. 2. Određivanje dijagrama površinske hrapavosti za dati rezni alat. 3. Analiza reznih ivica dijamantskog alata primenom skenirajućeg elektronskog mikroskopa (SEM).
AB  - The procedure for application of cutting tools with diamond coating in the processing of Al-12% Si alloy and glass fiber / polyester resin composites on lathe is in the application of wear resistance of cutting tools with diamond coating and surface roughness of machined surfaces defining optimal processing modes. The procedure consists of three phases: 1. Determination of the wear curve of tools with diamond coating during machining of alloys and composites on a lathe. 2. Determining the surface roughness diagram for a given cutting tool. 3. Analysis of cutting edges of diamond tools using scanning electron microscope (SEM).
T2  - Zavod za intelektualnu svojinu Republike Srbije
T1  - Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu
T1  - Procedure for application of cutting tools with diamond coating in the processing of Al-12% Si alloy and glass fiber / polyester resin composites on lathe
VL  - 102
IS  - 7
SP  - 8
EP  - 8
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11660
ER  - 

@misc{
author = "Grahovac, Nebojša and Pavkov, Vladimir and Stanković, Srboljub and Matović, Branko",
year = "2022",
abstract = "Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu je u primeni otpornosti na habanje reznog alata sa dijamantskom prevlakom i površinske hrapavosti obrađivanih površinana definisanje optimalnih režima obrade pomenutih materijala na CNC strugu. Postupak se sastoji od tri faze: 1. Određivanje krive habanja alata sa dijamantskom prevlakom pri mašinskoj obradi legure i kompozita na strugu. 2. Određivanje dijagrama površinske hrapavosti za dati rezni alat. 3. Analiza reznih ivica dijamantskog alata primenom skenirajućeg elektronskog mikroskopa (SEM)., The procedure for application of cutting tools with diamond coating in the processing of Al-12% Si alloy and glass fiber / polyester resin composites on lathe is in the application of wear resistance of cutting tools with diamond coating and surface roughness of machined surfaces defining optimal processing modes. The procedure consists of three phases: 1. Determination of the wear curve of tools with diamond coating during machining of alloys and composites on a lathe. 2. Determining the surface roughness diagram for a given cutting tool. 3. Analysis of cutting edges of diamond tools using scanning electron microscope (SEM).",
journal = "Zavod za intelektualnu svojinu Republike Srbije",
title = "Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu, Procedure for application of cutting tools with diamond coating in the processing of Al-12% Si alloy and glass fiber / polyester resin composites on lathe",
volume = "102",
number = "7",
pages = "8-8",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11660"
}

Grahovac, N., Pavkov, V., Stanković, S.,& Matović, B.. (2022). Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu. in Zavod za intelektualnu svojinu Republike Srbije, 102(7), 8-8.
https://hdl.handle.net/21.15107/rcub_vinar_11660

Grahovac N, Pavkov V, Stanković S, Matović B. Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu. in Zavod za intelektualnu svojinu Republike Srbije. 2022;102(7):8-8.
https://hdl.handle.net/21.15107/rcub_vinar_11660 .

Grahovac, Nebojša, Pavkov, Vladimir, Stanković, Srboljub, Matović, Branko, "Postupak primene reznog alata sa dijamantskom prevlakom pri obradi legure Al-12%Si i kompozita staklena vlakna/poliesterska smola na strugu" in Zavod za intelektualnu svojinu Republike Srbije, 102, no. 7 (2022):8-8,
https://hdl.handle.net/21.15107/rcub_vinar_11660 .

TY  - PAT
AU  - Grahovac, Nebojša
AU  - Pavkov, Vladimir
AU  - Maksimović, Vesna
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11664
AB  - Postupak ocene obradljivosti superlegura mašinskom obradom je postupak u kome se primenjuju tri kriterijuma obradljivosti: ocena obradljivosti preko postojanosti alata, ocena obradljivosti preko temperatura pri mašinskoj obradi rezanjem i ocena obradljivosti na osnovu oblika i stepena deformisanosti strugotine. Za određivanje ovih ocena korišćeni su eksperimentalni podaci dobijeni snimanjem toka habanja alata, merenjem temperatura u zoni rezanja i određivanjem vrednosti faktora sabijanja strugotine pri obradi superlegura na bazi nikla IN-100 i MAR-M247.
AB  - The machinability assessment procedure of superalloys is a procedure in which three machinability criteria are applied: machinability assessment based on tool stability, machinability assessment based on cutting temperatures and machinability assessment based on the shape and degree of chip deformation. To determine these assesments, experimental data obtained by recording tool wear process, measuring temperatures in the cutting zone and determining the value of the chip compaction factor when processing nickel-based superalloys IN-100 and MAR-M247 were used.
T2  - Zavod za intelektualnu svojinu Republike Srbije
T1  - Postupak ocene obradljivosti superlegura mašinskom obradom
T1  - Machinability assesment procedure of superalloys
VL  - 102
IS  - 9
SP  - 9
EP  - 9
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11664
ER  - 

@misc{
author = "Grahovac, Nebojša and Pavkov, Vladimir and Maksimović, Vesna and Matović, Branko",
year = "2022",
abstract = "Postupak ocene obradljivosti superlegura mašinskom obradom je postupak u kome se primenjuju tri kriterijuma obradljivosti: ocena obradljivosti preko postojanosti alata, ocena obradljivosti preko temperatura pri mašinskoj obradi rezanjem i ocena obradljivosti na osnovu oblika i stepena deformisanosti strugotine. Za određivanje ovih ocena korišćeni su eksperimentalni podaci dobijeni snimanjem toka habanja alata, merenjem temperatura u zoni rezanja i određivanjem vrednosti faktora sabijanja strugotine pri obradi superlegura na bazi nikla IN-100 i MAR-M247., The machinability assessment procedure of superalloys is a procedure in which three machinability criteria are applied: machinability assessment based on tool stability, machinability assessment based on cutting temperatures and machinability assessment based on the shape and degree of chip deformation. To determine these assesments, experimental data obtained by recording tool wear process, measuring temperatures in the cutting zone and determining the value of the chip compaction factor when processing nickel-based superalloys IN-100 and MAR-M247 were used.",
journal = "Zavod za intelektualnu svojinu Republike Srbije",
title = "Postupak ocene obradljivosti superlegura mašinskom obradom, Machinability assesment procedure of superalloys",
volume = "102",
number = "9",
pages = "9-9",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11664"
}

Grahovac, N., Pavkov, V., Maksimović, V.,& Matović, B.. (2022). Postupak ocene obradljivosti superlegura mašinskom obradom. in Zavod za intelektualnu svojinu Republike Srbije, 102(9), 9-9.
https://hdl.handle.net/21.15107/rcub_vinar_11664

Grahovac N, Pavkov V, Maksimović V, Matović B. Postupak ocene obradljivosti superlegura mašinskom obradom. in Zavod za intelektualnu svojinu Republike Srbije. 2022;102(9):9-9.
https://hdl.handle.net/21.15107/rcub_vinar_11664 .

Grahovac, Nebojša, Pavkov, Vladimir, Maksimović, Vesna, Matović, Branko, "Postupak ocene obradljivosti superlegura mašinskom obradom" in Zavod za intelektualnu svojinu Republike Srbije, 102, no. 9 (2022):9-9,
https://hdl.handle.net/21.15107/rcub_vinar_11664 .

TY  - JOUR
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Prekajski-Đorđević, Marija D.
AU  - Bučevac, Dušan
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10384
AB  - In the present study, andesite basalt originated from the deposit site “Donje Jarinje”, Serbia, was examined as a potential raw material for high-density ceramics production. The production of high-density ceramics included dry milling, homogenization, cold isostatic pressing and sintering in the air. To determine the optimal processing parameters the sintering was conducted at 1040, 1050, 1060, 1070 and 1080°C, and afterwards the sintering duration was varied from 30 to 240min at the optimal sintering temperature of 1060°C. Characterization of the starting and sintered materials included the estimation of particle size distribution, density, hardness and fracture toughness complemented with X-ray diffraction, optical light microscopy, scanning electron microscopy and energy dispersive spectroscopy analysis. Phase transformations did not occur during processing in the investigated temperature range from 1040 to 1080°C. The obtained research results showed that 99.5% of relative density and the highest hardness and fracture toughness values of 6.7GPa and 2.2MPa•m1/2, respectively, were achieved for the andesite basalt sintered at 1060°C for 60min in the air. The results of the present study confirmed that the sintered andesite basalt can be used as a high-density ceramic material for various industrial applications.
T2  - Processing and Application of Ceramics
T1  - High-density ceramics obtained by andesite basalt sintering
VL  - 16
IS  - 2
SP  - 143
EP  - 152
DO  - 10.2298/PAC2202143P
ER  - 

@article{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Prekajski-Đorđević, Marija D. and Bučevac, Dušan and Matović, Branko",
year = "2022",
abstract = "In the present study, andesite basalt originated from the deposit site “Donje Jarinje”, Serbia, was examined as a potential raw material for high-density ceramics production. The production of high-density ceramics included dry milling, homogenization, cold isostatic pressing and sintering in the air. To determine the optimal processing parameters the sintering was conducted at 1040, 1050, 1060, 1070 and 1080°C, and afterwards the sintering duration was varied from 30 to 240min at the optimal sintering temperature of 1060°C. Characterization of the starting and sintered materials included the estimation of particle size distribution, density, hardness and fracture toughness complemented with X-ray diffraction, optical light microscopy, scanning electron microscopy and energy dispersive spectroscopy analysis. Phase transformations did not occur during processing in the investigated temperature range from 1040 to 1080°C. The obtained research results showed that 99.5% of relative density and the highest hardness and fracture toughness values of 6.7GPa and 2.2MPa•m1/2, respectively, were achieved for the andesite basalt sintered at 1060°C for 60min in the air. The results of the present study confirmed that the sintered andesite basalt can be used as a high-density ceramic material for various industrial applications.",
journal = "Processing and Application of Ceramics",
title = "High-density ceramics obtained by andesite basalt sintering",
volume = "16",
number = "2",
pages = "143-152",
doi = "10.2298/PAC2202143P"
}

Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I., Prekajski-Đorđević, M. D., Bučevac, D.,& Matović, B.. (2022). High-density ceramics obtained by andesite basalt sintering. in Processing and Application of Ceramics, 16(2), 143-152.
https://doi.org/10.2298/PAC2202143P

Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Prekajski-Đorđević MD, Bučevac D, Matović B. High-density ceramics obtained by andesite basalt sintering. in Processing and Application of Ceramics. 2022;16(2):143-152.
doi:10.2298/PAC2202143P .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Prekajski-Đorđević, Marija D., Bučevac, Dušan, Matović, Branko, "High-density ceramics obtained by andesite basalt sintering" in Processing and Application of Ceramics, 16, no. 2 (2022):143-152,
https://doi.org/10.2298/PAC2202143P . .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11336
AB  - The aim of this paper is to examine the physical and mechanical properties of glass-ceramic-metal composite materials obtained by sintering. Andesite basalt rock from Serbia was used as the starting material for obtaining the glass-ceramic matrix. Commercial powder of austenitic stainless steel 316L in the content of 10, 20, and 30 wt. % was used as the reinforcement. The technological process for obtaining glass-ceramic-metal composite materials consists of the following phases: crushing of andesite basalt rock to obtain the fine powder, homogenization of andesite basalt powder and 316L stainless steel powder with a binder, uniaxial pressing of powders with the pressure of 50 MPa, cold isostatic pressing green compacts with the pressure of 230 MPa, and sintering at 1060 °C/1h in the air. Based on the obtained experimental results, it could be concluded that the relative density of the sintered composite materials decreases with the increasing content of 316L steel in the glass-ceramic matrix. Also, there is a hardness decrease of the composite materials with increased content of 316L steel, which is expected due to the reduction in the relative density. However, the fracture toughness increases with increasing 316L steel content in the composite materials. The presence of a metal reinforcer in the glass-ceramic matrix contributed to the increase of fracture toughness of composite materials and thus the prevention of the catastrophic fracture common in glass-ceramic
AB  - Cilj ovog rada je ispitivanje fizičko-mehaničkih svojstava kompozitnih materijala staklo-keramikametal dobijenih sinterovanjem. Kao polazni materijal za dobijanje staklo-keramičke matrice korišćena je andezit bazaltna stena iz Srbije, dok je kao ojačivač korišćen prah komercijalnog austenitnog nerđajućeg čelika 316L sadržaja 10, 20 i 30 tež. %. Tehnološki proces dobijanja kompozitnih materijala staklo-keramika-metal sastoji se iz sledećih faza: drobljenja andezit bazaltne stene u cilju dobijanja finog praha, homogenizacije andezit bazaltnog praha i praha nerđajućeg čelika 316L sa vezivom, jednoosnog presovanja pritiskom od 50 MPa, hladnog izostatičkog presovanja pritiskom od 230 MPa i sinterovanja na 1060 °C/1h u vazduhu. Na osnovu dobijenih eksperimentalnih rezultata može se zaključiti da se relativna gustina sinterovanih kompozitnih materijala smanjuje sa povećanjem sadržaja čelika 316L u staklo-keramičkoj matrici. Takođe, dolazi do smanjenja tvrdoće kompozitnih materijala sa povećanjem sadržaja čelika 316L u kompozitu, zbog smanjenja relativne gustine. Sa povećanjem sadržaja čelika 316L u kompozitnom materijalu žilavost loma se povećava. Prisustvo metalnog ojačivača u staklo-keramičkoj matrici doprinelo je povećanju žilavosti loma kompozitnih materijala i prevenciji loma koji je uobičajen u staklo-keramici.
PB  - Beograd : Serbian Society of Corrosion and Materials Protection UISKOZAM = Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM
C3  - XXIII YuCorr International Conference : Proceedings
T1  - Physical and mechanical properties of glass-ceramic-metal composite materials after sintering
T1  - Fizička i mehanička svojstva staklo-keramika-metal kompozitnih materijala nakon sinterovanja
SP  - 149
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11336
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Matović, Branko",
year = "2022",
abstract = "The aim of this paper is to examine the physical and mechanical properties of glass-ceramic-metal composite materials obtained by sintering. Andesite basalt rock from Serbia was used as the starting material for obtaining the glass-ceramic matrix. Commercial powder of austenitic stainless steel 316L in the content of 10, 20, and 30 wt. % was used as the reinforcement. The technological process for obtaining glass-ceramic-metal composite materials consists of the following phases: crushing of andesite basalt rock to obtain the fine powder, homogenization of andesite basalt powder and 316L stainless steel powder with a binder, uniaxial pressing of powders with the pressure of 50 MPa, cold isostatic pressing green compacts with the pressure of 230 MPa, and sintering at 1060 °C/1h in the air. Based on the obtained experimental results, it could be concluded that the relative density of the sintered composite materials decreases with the increasing content of 316L steel in the glass-ceramic matrix. Also, there is a hardness decrease of the composite materials with increased content of 316L steel, which is expected due to the reduction in the relative density. However, the fracture toughness increases with increasing 316L steel content in the composite materials. The presence of a metal reinforcer in the glass-ceramic matrix contributed to the increase of fracture toughness of composite materials and thus the prevention of the catastrophic fracture common in glass-ceramic, Cilj ovog rada je ispitivanje fizičko-mehaničkih svojstava kompozitnih materijala staklo-keramikametal dobijenih sinterovanjem. Kao polazni materijal za dobijanje staklo-keramičke matrice korišćena je andezit bazaltna stena iz Srbije, dok je kao ojačivač korišćen prah komercijalnog austenitnog nerđajućeg čelika 316L sadržaja 10, 20 i 30 tež. %. Tehnološki proces dobijanja kompozitnih materijala staklo-keramika-metal sastoji se iz sledećih faza: drobljenja andezit bazaltne stene u cilju dobijanja finog praha, homogenizacije andezit bazaltnog praha i praha nerđajućeg čelika 316L sa vezivom, jednoosnog presovanja pritiskom od 50 MPa, hladnog izostatičkog presovanja pritiskom od 230 MPa i sinterovanja na 1060 °C/1h u vazduhu. Na osnovu dobijenih eksperimentalnih rezultata može se zaključiti da se relativna gustina sinterovanih kompozitnih materijala smanjuje sa povećanjem sadržaja čelika 316L u staklo-keramičkoj matrici. Takođe, dolazi do smanjenja tvrdoće kompozitnih materijala sa povećanjem sadržaja čelika 316L u kompozitu, zbog smanjenja relativne gustine. Sa povećanjem sadržaja čelika 316L u kompozitnom materijalu žilavost loma se povećava. Prisustvo metalnog ojačivača u staklo-keramičkoj matrici doprinelo je povećanju žilavosti loma kompozitnih materijala i prevenciji loma koji je uobičajen u staklo-keramici.",
publisher = "Beograd : Serbian Society of Corrosion and Materials Protection UISKOZAM = Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM",
journal = "XXIII YuCorr International Conference : Proceedings",
title = "Physical and mechanical properties of glass-ceramic-metal composite materials after sintering, Fizička i mehanička svojstva staklo-keramika-metal kompozitnih materijala nakon sinterovanja",
pages = "149",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11336"
}

Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I.,& Matović, B.. (2022). Physical and mechanical properties of glass-ceramic-metal composite materials after sintering. in XXIII YuCorr International Conference : Proceedings
Beograd : Serbian Society of Corrosion and Materials Protection UISKOZAM = Udruženje inženjera Srbije za koroziju i zaštitu materijala UISKOZAM., 149.
https://hdl.handle.net/21.15107/rcub_vinar_11336

Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Matović B. Physical and mechanical properties of glass-ceramic-metal composite materials after sintering. in XXIII YuCorr International Conference : Proceedings. 2022;:149.
https://hdl.handle.net/21.15107/rcub_vinar_11336 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Matović, Branko, "Physical and mechanical properties of glass-ceramic-metal composite materials after sintering" in XXIII YuCorr International Conference : Proceedings (2022):149,
https://hdl.handle.net/21.15107/rcub_vinar_11336 .

TY  - CONF
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
AU  - Milošević, Nenad
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11561
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - High temperature failures of metals
SP  - 25
EP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11561
ER  - 

@conference{
author = "Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar and Maksimović, Vesna and Pavkov, Vladimir and Milošević, Nenad",
year = "2022",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "High temperature failures of metals",
pages = "25-25",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11561"
}

Bakić, G., Đukić, M., Rajičić, B., Maslarević, A., Maksimović, V., Pavkov, V.,& Milošević, N.. (2022). High temperature failures of metals. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 25-25.
https://hdl.handle.net/21.15107/rcub_vinar_11561

Bakić G, Đukić M, Rajičić B, Maslarević A, Maksimović V, Pavkov V, Milošević N. High temperature failures of metals. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:25-25.
https://hdl.handle.net/21.15107/rcub_vinar_11561 .

Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, Maksimović, Vesna, Pavkov, Vladimir, Milošević, Nenad, "High temperature failures of metals" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):25-25,
https://hdl.handle.net/21.15107/rcub_vinar_11561 .

TY  - PAT
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Luković, Jelena M.
AU  - Matović, Branko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11251
AB  - Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge, pripada oblasti hemije, obrade materijala i građevinarstva, u širem smislu, a odnosi se na završne radove i oblikovane keramičke proizvode karakteristične po svom sastavu i svojstvima u užem smislu. Uz pravilnu tehnološku proceduru, koju čine: mlevenje, mešanje, presovanje i sinterovanje materijala, nastaje element (5) željenih mehaničkih svojstava, koj može biti u obliku cigle ili ploče različitih geometrijskih oblika u osnovi. Za izradu elemenata (5) koristi se mleveni bazaltni prah (2.2) u koji se kao vezivno sredstvo dodaje paraplast, čijim mešanjem se dobije smeša (S). Radi poboljšanja mehaničkih svojstava elemenata (5), u smešu (S) se dodaju čelična vlakna (2.1) kako bi se formirala mešavina (M). Element (5) se sastoji od jezgra (J), koje je izrađeno od mešavine smeše (S) i čeličnih vlakana (2.1) i omotača (4) koji je izrađen od smeše (S) koju čini bazaltni prah (2.2) i paraplast. Element (5) se potom može brusiti i polirati u cilju dobijanja željenih tolerancija i kvaliteta površine za finalnu industrijsku primenu.
T2  - Zavod za intelektualnu svojinu Republike Srbije
T1  - Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge
T1  - The Process of Making Flooring Elements for Interior and Exterior Paving and a Flooring Element
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11251
ER  - 

@misc{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Luković, Jelena M. and Matović, Branko",
year = "2022",
abstract = "Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge, pripada oblasti hemije, obrade materijala i građevinarstva, u širem smislu, a odnosi se na završne radove i oblikovane keramičke proizvode karakteristične po svom sastavu i svojstvima u užem smislu. Uz pravilnu tehnološku proceduru, koju čine: mlevenje, mešanje, presovanje i sinterovanje materijala, nastaje element (5) željenih mehaničkih svojstava, koj može biti u obliku cigle ili ploče različitih geometrijskih oblika u osnovi. Za izradu elemenata (5) koristi se mleveni bazaltni prah (2.2) u koji se kao vezivno sredstvo dodaje paraplast, čijim mešanjem se dobije smeša (S). Radi poboljšanja mehaničkih svojstava elemenata (5), u smešu (S) se dodaju čelična vlakna (2.1) kako bi se formirala mešavina (M). Element (5) se sastoji od jezgra (J), koje je izrađeno od mešavine smeše (S) i čeličnih vlakana (2.1) i omotača (4) koji je izrađen od smeše (S) koju čini bazaltni prah (2.2) i paraplast. Element (5) se potom može brusiti i polirati u cilju dobijanja željenih tolerancija i kvaliteta površine za finalnu industrijsku primenu.",
journal = "Zavod za intelektualnu svojinu Republike Srbije",
title = "Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge, The Process of Making Flooring Elements for Interior and Exterior Paving and a Flooring Element",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11251"
}

Pavkov, V., Bakić, G., Maksimović, V., Luković, J. M.,& Matović, B.. (2022). Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge. in Zavod za intelektualnu svojinu Republike Srbije.
https://hdl.handle.net/21.15107/rcub_vinar_11251

Pavkov V, Bakić G, Maksimović V, Luković JM, Matović B. Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge. in Zavod za intelektualnu svojinu Republike Srbije. 2022;.
https://hdl.handle.net/21.15107/rcub_vinar_11251 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Luković, Jelena M., Matović, Branko, "Postupak izrade elemenata podnih obloga za unutrašnje i spoljašnje popločavanje i element podne obloge" in Zavod za intelektualnu svojinu Republike Srbije (2022),
https://hdl.handle.net/21.15107/rcub_vinar_11251 .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Zagorac, Jelena B.
AU  - Pavkov, Vladimir
AU  - Maki, Ryosuke S.S.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8668
AB  - Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics
VL  - 40
IS  - 7
SP  - 2652
EP  - 2657
DO  - 10.1016/j.jeurceramsoc.2019.11.012
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Zagorac, Jelena B. and Pavkov, Vladimir and Maki, Ryosuke S.S. and Yoshida, Katsumi and Yano, Toyohiko",
year = "2020",
abstract = "Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics",
volume = "40",
number = "7",
pages = "2652-2657",
doi = "10.1016/j.jeurceramsoc.2019.11.012"
}

Matović, B., Maletaškić, J., Zagorac, J. B., Pavkov, V., Maki, R. S.S., Yoshida, K.,& Yano, T.. (2020). Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society, 40(7), 2652-2657.
https://doi.org/10.1016/j.jeurceramsoc.2019.11.012

Matović B, Maletaškić J, Zagorac JB, Pavkov V, Maki RS, Yoshida K, Yano T. Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society. 2020;40(7):2652-2657.
doi:10.1016/j.jeurceramsoc.2019.11.012 .

Matović, Branko, Maletaškić, Jelena, Zagorac, Jelena B., Pavkov, Vladimir, Maki, Ryosuke S.S., Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics" in Journal of the European Ceramic Society, 40, no. 7 (2020):2652-2657,
https://doi.org/10.1016/j.jeurceramsoc.2019.11.012 . .

TY  - JOUR
AU  - Maksimović, Vesna
AU  - Stoiljković, Milovan
AU  - Pavkov, Vladimir
AU  - Ciganović, Jovan
AU  - Cvijović-Alagić, Ivana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9526
AB  - Surface modifications of metallic biomaterials can in great merit, improve the properties of the hard-tissue implants and in that way contribute to the success of the surgical implantation process. Coating deposition stands out as one of the many surface-modifying techniques that can be used to improve implant surface properties and, in turn, induce successful osseointegration. Deposition of the TiO2 layer on the surface of the metallic implants has a great potential to enhance not only their osseointegration ability but also their biocompatibility and corrosion resistance. In the present study, the possibility of successful deposition of the TiO2 layer on the surface of commercially pure titanium (CP-Ti), as the most commonly used metallic implant material, by spraying the colloidal nanoparticles aqueous solution in the electric discharge plasma at atmospheric pressure was investigated. To characterize the colloidal TiO2 nanoparticle solution, used for the coating deposition process, transmission electron microscopy (TEM) was utilized, while scanning electron microscopy (SEM) and optical profilometry were used to investigate the deposited surface layer morphology and quality. Estimation of the deposited film quality and texture was used to confirm that the arc plasma deposition technique can be successfully used as an advanced and easy-to-apply method for coating the metallic implant material surface with the bioactive TiO2 layer which favors the osseointegration process through the improvement of the implant surface properties. The TiO2 coating was successfully deposited using the arc plasma deposition technique and covered the entire surface of the CP-Ti substrate without any signs of coating cracking or detachment.
T2  - Metallurgical and Materials Engineering
T1  - Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution
VL  - 26
IS  - 4
SP  - 341
EP  - 348
DO  - 10.30544/587
ER  - 

@article{
author = "Maksimović, Vesna and Stoiljković, Milovan and Pavkov, Vladimir and Ciganović, Jovan and Cvijović-Alagić, Ivana",
year = "2020",
abstract = "Surface modifications of metallic biomaterials can in great merit, improve the properties of the hard-tissue implants and in that way contribute to the success of the surgical implantation process. Coating deposition stands out as one of the many surface-modifying techniques that can be used to improve implant surface properties and, in turn, induce successful osseointegration. Deposition of the TiO2 layer on the surface of the metallic implants has a great potential to enhance not only their osseointegration ability but also their biocompatibility and corrosion resistance. In the present study, the possibility of successful deposition of the TiO2 layer on the surface of commercially pure titanium (CP-Ti), as the most commonly used metallic implant material, by spraying the colloidal nanoparticles aqueous solution in the electric discharge plasma at atmospheric pressure was investigated. To characterize the colloidal TiO2 nanoparticle solution, used for the coating deposition process, transmission electron microscopy (TEM) was utilized, while scanning electron microscopy (SEM) and optical profilometry were used to investigate the deposited surface layer morphology and quality. Estimation of the deposited film quality and texture was used to confirm that the arc plasma deposition technique can be successfully used as an advanced and easy-to-apply method for coating the metallic implant material surface with the bioactive TiO2 layer which favors the osseointegration process through the improvement of the implant surface properties. The TiO2 coating was successfully deposited using the arc plasma deposition technique and covered the entire surface of the CP-Ti substrate without any signs of coating cracking or detachment.",
journal = "Metallurgical and Materials Engineering",
title = "Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution",
volume = "26",
number = "4",
pages = "341-348",
doi = "10.30544/587"
}

Maksimović, V., Stoiljković, M., Pavkov, V., Ciganović, J.,& Cvijović-Alagić, I.. (2020). Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution. in Metallurgical and Materials Engineering, 26(4), 341-348.
https://doi.org/10.30544/587

Maksimović V, Stoiljković M, Pavkov V, Ciganović J, Cvijović-Alagić I. Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution. in Metallurgical and Materials Engineering. 2020;26(4):341-348.
doi:10.30544/587 .

Maksimović, Vesna, Stoiljković, Milovan, Pavkov, Vladimir, Ciganović, Jovan, Cvijović-Alagić, Ivana, "Arc Plasma Deposition of TiO2 Nanoparticles from Colloidal Solution" in Metallurgical and Materials Engineering, 26, no. 4 (2020):341-348,
https://doi.org/10.30544/587 . .

TY  - JOUR
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana M.
AU  - Maksimović, Vesna
AU  - Petrović, Aleksandar Lj.
AU  - Mitrović, Nenad
AU  - Mišković, Žarko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8861
AB  - One of the important tasks of evaluating the integrity of mechanical process elements and structures is to determine the local mechanical properties. In this paper, experimental and numerical analyses of the mechanical behavior of an output inter-heater tube, made of 12H1MF heat-resistant steel, was performed after 200,000 h of exploitation. During exploitation, the tube was exposed to various mechanisms of damage including gas corrosion. The tube was cut from a pipe system during reparations of a thermal power plant, and then cold-deformed by bending to obtain a U-bend tube, which was then used in the experiment. For this purpose, a specimen holder made of structural steel S235 was specifically designed to test such a sample. The U-bend tube was then exposed to the external compressive load during the experiment. Experimental research was based on the application of the 3D digital image correlation (DIC), while a finite element method (FEM) was applied in numerical simulation performed by using the Abaqus software package. The 3D DIC is an optical and contactless experimental method that allows measurements of displacement fields and deformations of geometrically complex structures. The Aramis system was used for the experimental analysis as well as for verification of the numerical model. During the experiment, the von Mises strain field was measured at the top of the U-bend tube, in the tightening zone, as it represents a critical place for crack initiation and propagation during the work of an inter-heater. Based on the obtained results and a comparative analysis of experimental and numerical values of the von Mises strain field at the U-bend tube, deviation of the model predictions of about 18 % was determined. The FEM predicted smaller values of the von Mises strain field compared to the DIC method. This is the result of an incomplete geometry applied in the model due to deformation that occurred in the bend zone of the U-bend tube, loss of material and the tube surface damage due to the influence of gas corrosion during 200,000 h of exploitation. Experimental analysis has confirmed that the U-bend tube, after 200,000 h of exploitation, can remain in service even if it is damaged due to the effect of gas corrosion.
AB  - Jedan od važnih zadataka procene integriteta mašinskih elemenata i konstrukcija je određivanje lokalnih mehaničkih svojstava. U ovom radu izvršeno je eksperimentalno i numeričko ispitivanje mehaničkih svojstava cevi, izlaznog međupregrejača pare, izrađenog od toplotnopostojanog čelika 12H1MF, nakon 200.000 h rada. Cev izlaznog međupregrejača pare je isečena iz cevnog sistema tokom remonta termoelektrane, a potom hladno deformisana savijanjem, u cilju dobijanja cevnog luka, za potrebe eksperimenta. Namenski je konstruisan držač za ispitivanje takvog uzorka. Eksperimentalno istraživanje je bazirano na primeni 3D metode korelacije digitalnih slika, dok je metoda konačnih elemenata primenjena u numeričkoj simulaciji. Metoda 3D korelacije digitalnih slika predstavlja optičku i beskontaktnu eksperimentalnu metodu koja omogućava merenje polja pomeranja i deformacija geometrijski kompleksnih struktura. Za eksperimentalnu analizu kao i verifikaciju numeričkog modela korišćen je sistem Aramis, baziran na metodi korelacije digitalnih slika. Na osnovu dobijenih rezultata i uporedne analize eksperimentalnih i numeričkih vrednosti, koje se odnose na fon Mizesove deformacije na temenu cevnog luka, javlja se odstupanje od oko 18%. Ovo odstupanje nastaje kao rezultat korišćenih metoda koje imaju bitne razlike u njihovim početnim uslovima ispitivanja.
T2  - Hemijska industrija
T1  - Eksperimentalno i numeričko ispitivanje cevnog luka urađenog od cevi izlaznog međupregrejača pare nakon eksploatacije
VL  - 74
IS  - 1
SP  - 51
EP  - 63
DO  - 10.2298/HEMIND190905005P
ER  - 

@article{
author = "Pavkov, Vladimir and Bakić, Gordana M. and Maksimović, Vesna and Petrović, Aleksandar Lj. and Mitrović, Nenad and Mišković, Žarko",
year = "2020",
abstract = "One of the important tasks of evaluating the integrity of mechanical process elements and structures is to determine the local mechanical properties. In this paper, experimental and numerical analyses of the mechanical behavior of an output inter-heater tube, made of 12H1MF heat-resistant steel, was performed after 200,000 h of exploitation. During exploitation, the tube was exposed to various mechanisms of damage including gas corrosion. The tube was cut from a pipe system during reparations of a thermal power plant, and then cold-deformed by bending to obtain a U-bend tube, which was then used in the experiment. For this purpose, a specimen holder made of structural steel S235 was specifically designed to test such a sample. The U-bend tube was then exposed to the external compressive load during the experiment. Experimental research was based on the application of the 3D digital image correlation (DIC), while a finite element method (FEM) was applied in numerical simulation performed by using the Abaqus software package. The 3D DIC is an optical and contactless experimental method that allows measurements of displacement fields and deformations of geometrically complex structures. The Aramis system was used for the experimental analysis as well as for verification of the numerical model. During the experiment, the von Mises strain field was measured at the top of the U-bend tube, in the tightening zone, as it represents a critical place for crack initiation and propagation during the work of an inter-heater. Based on the obtained results and a comparative analysis of experimental and numerical values of the von Mises strain field at the U-bend tube, deviation of the model predictions of about 18 % was determined. The FEM predicted smaller values of the von Mises strain field compared to the DIC method. This is the result of an incomplete geometry applied in the model due to deformation that occurred in the bend zone of the U-bend tube, loss of material and the tube surface damage due to the influence of gas corrosion during 200,000 h of exploitation. Experimental analysis has confirmed that the U-bend tube, after 200,000 h of exploitation, can remain in service even if it is damaged due to the effect of gas corrosion., Jedan od važnih zadataka procene integriteta mašinskih elemenata i konstrukcija je određivanje lokalnih mehaničkih svojstava. U ovom radu izvršeno je eksperimentalno i numeričko ispitivanje mehaničkih svojstava cevi, izlaznog međupregrejača pare, izrađenog od toplotnopostojanog čelika 12H1MF, nakon 200.000 h rada. Cev izlaznog međupregrejača pare je isečena iz cevnog sistema tokom remonta termoelektrane, a potom hladno deformisana savijanjem, u cilju dobijanja cevnog luka, za potrebe eksperimenta. Namenski je konstruisan držač za ispitivanje takvog uzorka. Eksperimentalno istraživanje je bazirano na primeni 3D metode korelacije digitalnih slika, dok je metoda konačnih elemenata primenjena u numeričkoj simulaciji. Metoda 3D korelacije digitalnih slika predstavlja optičku i beskontaktnu eksperimentalnu metodu koja omogućava merenje polja pomeranja i deformacija geometrijski kompleksnih struktura. Za eksperimentalnu analizu kao i verifikaciju numeričkog modela korišćen je sistem Aramis, baziran na metodi korelacije digitalnih slika. Na osnovu dobijenih rezultata i uporedne analize eksperimentalnih i numeričkih vrednosti, koje se odnose na fon Mizesove deformacije na temenu cevnog luka, javlja se odstupanje od oko 18%. Ovo odstupanje nastaje kao rezultat korišćenih metoda koje imaju bitne razlike u njihovim početnim uslovima ispitivanja.",
journal = "Hemijska industrija",
title = "Eksperimentalno i numeričko ispitivanje cevnog luka urađenog od cevi izlaznog međupregrejača pare nakon eksploatacije",
volume = "74",
number = "1",
pages = "51-63",
doi = "10.2298/HEMIND190905005P"
}

Pavkov, V., Bakić, G. M., Maksimović, V., Petrović, A. Lj., Mitrović, N.,& Mišković, Ž.. (2020). Eksperimentalno i numeričko ispitivanje cevnog luka urađenog od cevi izlaznog međupregrejača pare nakon eksploatacije. in Hemijska industrija, 74(1), 51-63.
https://doi.org/10.2298/HEMIND190905005P

Pavkov V, Bakić GM, Maksimović V, Petrović AL, Mitrović N, Mišković Ž. Eksperimentalno i numeričko ispitivanje cevnog luka urađenog od cevi izlaznog međupregrejača pare nakon eksploatacije. in Hemijska industrija. 2020;74(1):51-63.
doi:10.2298/HEMIND190905005P .

Pavkov, Vladimir, Bakić, Gordana M., Maksimović, Vesna, Petrović, Aleksandar Lj., Mitrović, Nenad, Mišković, Žarko, "Eksperimentalno i numeričko ispitivanje cevnog luka urađenog od cevi izlaznog međupregrejača pare nakon eksploatacije" in Hemijska industrija, 74, no. 1 (2020):51-63,
https://doi.org/10.2298/HEMIND190905005P . .

TY  - JOUR
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana M.
AU  - Đukić, Miloš B.
AU  - Rajičić, Bratislav
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8624
AB  - In this study, two erosion protection MMC coatings with WC particles were deposited by the plasma transferred arc (PTA) welding. One of the coatings with tungsten carbide WC in the NiBSi matrix (WC/NiBSi), and the second coating WC in NiCrBSi matrix (WC/NiCrBSi) was deposited by the flame spray process on the same substrate material S235JR steel. Experiments were performed using a gas blast sand erosion test facility with high-velocity erodent particles impact (approximately 100 m/s) at different particle impact angles (20°–45°), with an objective to study erosion wear characteristics and mass loss of two MMC coatings. Microstructural characterization of MMC coatings was done by scanning electron microscope equipped with energy-dispersive X-ray spectroscopy, whereas X-ray diffraction analysis was used for identification of present phases. The hardness of coatings was determined by Vickers hardness measurements. WC/NiBSi obtained by the PTA process shows superior hardness and erosion properties. © 2019, The Indian Institute of Metals - IIM.
T2  - Transactions of the Indian Institute of Metals
T1  - Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes
VL  - 73
IS  - 1
SP  - 259
EP  - 271
DO  - 10.1007/s12666-019-01831-9
ER  - 

@article{
author = "Maslarević, Aleksandar and Bakić, Gordana M. and Đukić, Miloš B. and Rajičić, Bratislav and Maksimović, Vesna and Pavkov, Vladimir",
year = "2020",
abstract = "In this study, two erosion protection MMC coatings with WC particles were deposited by the plasma transferred arc (PTA) welding. One of the coatings with tungsten carbide WC in the NiBSi matrix (WC/NiBSi), and the second coating WC in NiCrBSi matrix (WC/NiCrBSi) was deposited by the flame spray process on the same substrate material S235JR steel. Experiments were performed using a gas blast sand erosion test facility with high-velocity erodent particles impact (approximately 100 m/s) at different particle impact angles (20°–45°), with an objective to study erosion wear characteristics and mass loss of two MMC coatings. Microstructural characterization of MMC coatings was done by scanning electron microscope equipped with energy-dispersive X-ray spectroscopy, whereas X-ray diffraction analysis was used for identification of present phases. The hardness of coatings was determined by Vickers hardness measurements. WC/NiBSi obtained by the PTA process shows superior hardness and erosion properties. © 2019, The Indian Institute of Metals - IIM.",
journal = "Transactions of the Indian Institute of Metals",
title = "Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes",
volume = "73",
number = "1",
pages = "259-271",
doi = "10.1007/s12666-019-01831-9"
}

Maslarević, A., Bakić, G. M., Đukić, M. B., Rajičić, B., Maksimović, V.,& Pavkov, V.. (2020). Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes. in Transactions of the Indian Institute of Metals, 73(1), 259-271.
https://doi.org/10.1007/s12666-019-01831-9

Maslarević A, Bakić GM, Đukić MB, Rajičić B, Maksimović V, Pavkov V. Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes. in Transactions of the Indian Institute of Metals. 2020;73(1):259-271.
doi:10.1007/s12666-019-01831-9 .

Maslarević, Aleksandar, Bakić, Gordana M., Đukić, Miloš B., Rajičić, Bratislav, Maksimović, Vesna, Pavkov, Vladimir, "Microstructure and Wear Behavior of MMC Coatings Deposited by Plasma Transferred Arc Welding and Thermal Flame Spraying Processes" in Transactions of the Indian Institute of Metals, 73, no. 1 (2020):259-271,
https://doi.org/10.1007/s12666-019-01831-9 . .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Stoiljković, Milovan
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Ciganović, Jovan
AU  - Vranješ, Mila
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8739
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma
SP  - 222
EP  - 224
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8739
ER  - 

@conference{
author = "Pavkov, Vladimir and Stoiljković, Milovan and Maksimović, Vesna and Cvijović-Alagić, Ivana and Ciganović, Jovan and Vranješ, Mila",
year = "2018",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma",
pages = "222-224",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8739"
}

Pavkov, V., Stoiljković, M., Maksimović, V., Cvijović-Alagić, I., Ciganović, J.,& Vranješ, M.. (2018). TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 222-224.
https://hdl.handle.net/21.15107/rcub_vinar_8739

Pavkov V, Stoiljković M, Maksimović V, Cvijović-Alagić I, Ciganović J, Vranješ M. TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma. in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:222-224.
https://hdl.handle.net/21.15107/rcub_vinar_8739 .

Pavkov, Vladimir, Stoiljković, Milovan, Maksimović, Vesna, Cvijović-Alagić, Ivana, Ciganović, Jovan, Vranješ, Mila, "TiO2 Nanoparticle Deposition on Solid CP-Ti Substrate through Spraying Water Colloid in the Arc Plasma" in Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):222-224,
https://hdl.handle.net/21.15107/rcub_vinar_8739 .