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  - JOUR
AU  - Omerašević, Mia
AU  - Krsmanović, Miomir
AU  - Radovanović, Željko
AU  - Bučevac, Dušan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12244
AB  - Anorthite ceramics (CaAl2Si2O8) was obtained by slip casting of water suspension of kaolin (Al2O3·2SiO2·2H2O) and CaCO3 as a source of CaO. A relative density of 87 % of the theoretical density was achieved after a 3-h-long sintering of green samples at 1200 °C. It was found that slip casting allows the fabrication of anorthite with relatively small pores (<8 μm) which was beneficial for achieving a high fracture strength of 129 MPa and good thermal shock resistance. For a quantitative measurement of thermal shock resistance, a critical temperature interval (ΔTc) was determined by a reduction in the mean fracture strength of at least 30 %. The experimentally determined ΔTc of 300 °C was higher than the value calculated by the equation assuming that the thermal stress created during quenching causes the fracture. It was found that the discrepancy between experimental and calculated values of ΔTc could be explained by an introduction of cracks of various sizes by indentation method and careful observation of crack growth initiation after quenching from various temperatures. It is believed that the reason for the discrepancy lies in the different nature of stress that was used in the theoretical calculation and the stress that acts during sample quenching.
T2  - Ceramics International
T1  - Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting
VL  - 50
IS  - 3 Part B
SP  - 5787
EP  - 5795
DO  - 10.1016/j.ceramint.2023.11.381
ER  - 

@article{
author = "Omerašević, Mia and Krsmanović, Miomir and Radovanović, Željko and Bučevac, Dušan",
year = "2024",
abstract = "Anorthite ceramics (CaAl2Si2O8) was obtained by slip casting of water suspension of kaolin (Al2O3·2SiO2·2H2O) and CaCO3 as a source of CaO. A relative density of 87 % of the theoretical density was achieved after a 3-h-long sintering of green samples at 1200 °C. It was found that slip casting allows the fabrication of anorthite with relatively small pores (<8 μm) which was beneficial for achieving a high fracture strength of 129 MPa and good thermal shock resistance. For a quantitative measurement of thermal shock resistance, a critical temperature interval (ΔTc) was determined by a reduction in the mean fracture strength of at least 30 %. The experimentally determined ΔTc of 300 °C was higher than the value calculated by the equation assuming that the thermal stress created during quenching causes the fracture. It was found that the discrepancy between experimental and calculated values of ΔTc could be explained by an introduction of cracks of various sizes by indentation method and careful observation of crack growth initiation after quenching from various temperatures. It is believed that the reason for the discrepancy lies in the different nature of stress that was used in the theoretical calculation and the stress that acts during sample quenching.",
journal = "Ceramics International",
title = "Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting",
volume = "50",
number = "3 Part B",
pages = "5787-5795",
doi = "10.1016/j.ceramint.2023.11.381"
}

Omerašević, M., Krsmanović, M., Radovanović, Ž.,& Bučevac, D.. (2024). Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting. in Ceramics International, 50(3 Part B), 5787-5795.
https://doi.org/10.1016/j.ceramint.2023.11.381

Omerašević M, Krsmanović M, Radovanović Ž, Bučevac D. Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting. in Ceramics International. 2024;50(3 Part B):5787-5795.
doi:10.1016/j.ceramint.2023.11.381 .

Omerašević, Mia, Krsmanović, Miomir, Radovanović, Željko, Bučevac, Dušan, "Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting" in Ceramics International, 50, no. 3 Part B (2024):5787-5795,
https://doi.org/10.1016/j.ceramint.2023.11.381 . .

TY  - JOUR
AU  - Ivanović, Marija M.
AU  - Knežević, Sanja
AU  - Mirković, Miljana M.
AU  - Kljajević, Ljiljana M.
AU  - Bučevac, Dušan
AU  - Pavlović, Vladimir B.
AU  - Nenadović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10741
AB  - It is well known that geopolymers are a new group of binder materials of alumosilicate origin. Geopolymers are made by the reaction of precursor aluminosilicate materials with alkaline activator solutions. The current research relates to a low-cost and eco-friendly procedure, suitable of being implemented in two easy steps. The first step is the production of a solid phase based on fly ash (Obrenovac, Serbia) and eggshell ash as waste materials rich in calcium. The second step is alkali activating the solid phase using an alkaline activator (a mixture of NaOH and Na2SiO3) and procedures in proper laboratory conditions. Four samples with different eggshell ash content were synthesized. The concentration of used NaOH was 12 mol dm−3. The structural properties of all investigated samples were analyzed by XRD (X-ray diffraction), DRIFT (diffuse reflectance infrared Fourier transform), SEM (scanning electron microscopy) and UV/Vis spectroscopy analysis. XRD determined the amorphous halo with the presence of quartz as the crystal phase in all of the investigated samples. These results were confirmed by DRIFT analysis. The morphology of the samples was determined by SEM analysis. UV/Vis showed that the material could be a potential adsorbent.
T2  - Sustainability
T1  - Structural Characterization of Geopolymers with the Addition of Eggshell Ash
VL  - 15
IS  - 6
SP  - 5419
DO  - 10.3390/su15065419
ER  - 

@article{
author = "Ivanović, Marija M. and Knežević, Sanja and Mirković, Miljana M. and Kljajević, Ljiljana M. and Bučevac, Dušan and Pavlović, Vladimir B. and Nenadović, Miloš",
year = "2023",
abstract = "It is well known that geopolymers are a new group of binder materials of alumosilicate origin. Geopolymers are made by the reaction of precursor aluminosilicate materials with alkaline activator solutions. The current research relates to a low-cost and eco-friendly procedure, suitable of being implemented in two easy steps. The first step is the production of a solid phase based on fly ash (Obrenovac, Serbia) and eggshell ash as waste materials rich in calcium. The second step is alkali activating the solid phase using an alkaline activator (a mixture of NaOH and Na2SiO3) and procedures in proper laboratory conditions. Four samples with different eggshell ash content were synthesized. The concentration of used NaOH was 12 mol dm−3. The structural properties of all investigated samples were analyzed by XRD (X-ray diffraction), DRIFT (diffuse reflectance infrared Fourier transform), SEM (scanning electron microscopy) and UV/Vis spectroscopy analysis. XRD determined the amorphous halo with the presence of quartz as the crystal phase in all of the investigated samples. These results were confirmed by DRIFT analysis. The morphology of the samples was determined by SEM analysis. UV/Vis showed that the material could be a potential adsorbent.",
journal = "Sustainability",
title = "Structural Characterization of Geopolymers with the Addition of Eggshell Ash",
volume = "15",
number = "6",
pages = "5419",
doi = "10.3390/su15065419"
}

Ivanović, M. M., Knežević, S., Mirković, M. M., Kljajević, L. M., Bučevac, D., Pavlović, V. B.,& Nenadović, M.. (2023). Structural Characterization of Geopolymers with the Addition of Eggshell Ash. in Sustainability, 15(6), 5419.
https://doi.org/10.3390/su15065419

Ivanović MM, Knežević S, Mirković MM, Kljajević LM, Bučevac D, Pavlović VB, Nenadović M. Structural Characterization of Geopolymers with the Addition of Eggshell Ash. in Sustainability. 2023;15(6):5419.
doi:10.3390/su15065419 .

Ivanović, Marija M., Knežević, Sanja, Mirković, Miljana M., Kljajević, Ljiljana M., Bučevac, Dušan, Pavlović, Vladimir B., Nenadović, Miloš, "Structural Characterization of Geopolymers with the Addition of Eggshell Ash" in Sustainability, 15, no. 6 (2023):5419,
https://doi.org/10.3390/su15065419 . .

TY  - CONF
AU  - Stanić, Vojislav
AU  - Omerašević, Mia
AU  - Mutavdžić, Dragoslav
AU  - Jugović, Dragana
AU  - Bučevac, Dušan
AU  - Gerić, Tamara
AU  - Jelić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11647
AB  - Praseodymium doped calcium hydroxyapatite (PrHAP) nanopowder was synthesized by the co-precipitation method and characterized by X-Ray Diffraction, Fourier Transform Infrared, and Fluorescence Spectroscopy. Characterization studies from XRD and FTIR spectra showed that obtained crystals are monophase hydroxyapatites and that the sample particles are of nano size. A fluorescence study has shown that PrHAP particles have fluorescent emission under UV‐ Visible excitation. These results may open new avenues for developing bioactive materials for bone regeneration and fluorescent probes for bio-imaging applications
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  - Synthesis and characterization of luminescent Pr3+ –doped hydroxyapatite nanopowder as a potential biomaterial for bioimaging applications
SP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11647
ER  - 

@conference{
author = "Stanić, Vojislav and Omerašević, Mia and Mutavdžić, Dragoslav and Jugović, Dragana and Bučevac, Dušan and Gerić, Tamara and Jelić, Ivana",
year = "2023",
abstract = "Praseodymium doped calcium hydroxyapatite (PrHAP) nanopowder was synthesized by the co-precipitation method and characterized by X-Ray Diffraction, Fourier Transform Infrared, and Fluorescence Spectroscopy. Characterization studies from XRD and FTIR spectra showed that obtained crystals are monophase hydroxyapatites and that the sample particles are of nano size. A fluorescence study has shown that PrHAP particles have fluorescent emission under UV‐ Visible excitation. These results may open new avenues for developing bioactive materials for bone regeneration and fluorescent probes for bio-imaging applications",
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 = "Synthesis and characterization of luminescent Pr3+ –doped hydroxyapatite nanopowder as a potential biomaterial for bioimaging applications",
pages = "72",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11647"
}

Stanić, V., Omerašević, M., Mutavdžić, D., Jugović, D., Bučevac, D., Gerić, T.,& Jelić, I.. (2023). Synthesis and characterization of luminescent Pr3+ –doped hydroxyapatite nanopowder as a potential biomaterial for bioimaging applications. 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., 72.
https://hdl.handle.net/21.15107/rcub_vinar_11647

Stanić V, Omerašević M, Mutavdžić D, Jugović D, Bučevac D, Gerić T, Jelić I. Synthesis and characterization of luminescent Pr3+ –doped hydroxyapatite nanopowder as a potential biomaterial for bioimaging applications. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:72.
https://hdl.handle.net/21.15107/rcub_vinar_11647 .

Stanić, Vojislav, Omerašević, Mia, Mutavdžić, Dragoslav, Jugović, Dragana, Bučevac, Dušan, Gerić, Tamara, Jelić, Ivana, "Synthesis and characterization of luminescent Pr3+ –doped hydroxyapatite nanopowder as a potential biomaterial for bioimaging applications" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):72,
https://hdl.handle.net/21.15107/rcub_vinar_11647 .

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  - 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  - 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  - JOUR
AU  - Đukić, Dunja
AU  - Šuljagić, Marija
AU  - Anđelković, Ljubica
AU  - Pavlović, Vera
AU  - Bučevac, Dušan
AU  - Vrbica, Boško
AU  - Mirković, Miljana M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10433
AB  - The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.
T2  - Science of Sintering
T1  - Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials
VL  - 54
IS  - 3
DO  - 10.2298/SOS2203287D
ER  - 

@article{
author = "Đukić, Dunja and Šuljagić, Marija and Anđelković, Ljubica and Pavlović, Vera and Bučevac, Dušan and Vrbica, Boško and Mirković, Miljana M.",
year = "2022",
abstract = "The effect of Ca2+ amount and sintering temperature on mechanical properties of geopolymer-brushite (GPB) binders was investigated. Brushite and raw abandoned kaolinite clay thermally transformed into metakaolin were used for GPB synthesis. The complete phase and structural analyses were performed by X-ray powder diffraction, and Fourier transforms infrared spectroscopy (FT-IR). The pore-filling effect as a consequence of Ca2+ ions incorporation into the hybrid geopolymer networks improved the compressive strength. On the other hand, the chosen biscuit sintering at 800 and 900oC caused the phase transformation of brushite into calcium pyrophosphate, which negatively affected the compressive strength of such materials. The obtained results indicate that the usage of relatively high sintering temperatures is not always the necessary step for producing geopolymer-based types of cement with prominent mechanical properties.",
journal = "Science of Sintering",
title = "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials",
volume = "54",
number = "3",
doi = "10.2298/SOS2203287D"
}

Đukić, D., Šuljagić, M., Anđelković, L., Pavlović, V., Bučevac, D., Vrbica, B.,& Mirković, M. M.. (2022). Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering, 54(3).
https://doi.org/10.2298/SOS2203287D

Đukić D, Šuljagić M, Anđelković L, Pavlović V, Bučevac D, Vrbica B, Mirković MM. Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials. in Science of Sintering. 2022;54(3).
doi:10.2298/SOS2203287D .

Đukić, Dunja, Šuljagić, Marija, Anđelković, Ljubica, Pavlović, Vera, Bučevac, Dušan, Vrbica, Boško, Mirković, Miljana M., "Effect of Sintering Temperature and Calcium amount on Compressive Strength of Brushite-Metakaolin Polymer Materials" in Science of Sintering, 54, no. 3 (2022),
https://doi.org/10.2298/SOS2203287D . .

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Miloš
AU  - Ivanović, Marija M.
AU  - Bučevac, Dušan
AU  - Mirković, Miljana M.
AU  - Mladenović-Nikolić, Nataša
AU  - Nenadović, Snežana S.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10635
AB  - In this paper, raw natural metakaolin (MK, Serbia) clay was used as a starting material for the synthesis of geopolymers for thermal treatment. Metakaolin was obtained by calcination of kaolin at 750 °C for 1 h while geopolymer samples were calcined at 900 °C, which is the key transition temperature. Metakaolin was activated by a solution of NaOH of various concentrations and sodium silicate. During the controlled heat treatment, the geopolymer samples began to melt slightly and coagulate locally. The high-temperature exposure of geopolymer samples (900 °C) caused a significant reduction in oxygen, and even more sodium, which led to the formation of a complex porous structure. As the concentration of NaOH (6 mol dm−3 and 8 mol dm−3) increased, new semi-crystalline phases of nepheline and sanidine were formed. Thermal properties were increasingly used to better understand and improve the properties of geopolymers at high temperatures. Temperature changes were monitored by simultaneous use of thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The loss of mass of the investigated samples at 900 °C was in the range of 8–16%. Thermal treatment of geopolymers at 900 °C did not have much effect on the change in compressive strength of investigated samples. The results of thermal treatment of geopolymers at 900 °C showed that this is approximately the temperature at which the structure of the geopolymer turns into a ceramic-like structure. All investigated properties of the geopolymers are closely connected to the precursors and the constituents of the geopolymers.
T2  - Gels
T1  - Heat Treatment of Geopolymer Samples Obtained by Varying Concentration of Sodium Hydroxide as Constituent of Alkali Activator
VL  - 8
SP  - 333
DO  - 10.3390/gels8060333
ER  - 

@article{
author = "Kljajević, Ljiljana M. and Nenadović, Miloš and Ivanović, Marija M. and Bučevac, Dušan and Mirković, Miljana M. and Mladenović-Nikolić, Nataša and Nenadović, Snežana S.",
year = "2022",
abstract = "In this paper, raw natural metakaolin (MK, Serbia) clay was used as a starting material for the synthesis of geopolymers for thermal treatment. Metakaolin was obtained by calcination of kaolin at 750 °C for 1 h while geopolymer samples were calcined at 900 °C, which is the key transition temperature. Metakaolin was activated by a solution of NaOH of various concentrations and sodium silicate. During the controlled heat treatment, the geopolymer samples began to melt slightly and coagulate locally. The high-temperature exposure of geopolymer samples (900 °C) caused a significant reduction in oxygen, and even more sodium, which led to the formation of a complex porous structure. As the concentration of NaOH (6 mol dm−3 and 8 mol dm−3) increased, new semi-crystalline phases of nepheline and sanidine were formed. Thermal properties were increasingly used to better understand and improve the properties of geopolymers at high temperatures. Temperature changes were monitored by simultaneous use of thermogravimetric analysis (TGA) and differential thermal analysis (DTA). The loss of mass of the investigated samples at 900 °C was in the range of 8–16%. Thermal treatment of geopolymers at 900 °C did not have much effect on the change in compressive strength of investigated samples. The results of thermal treatment of geopolymers at 900 °C showed that this is approximately the temperature at which the structure of the geopolymer turns into a ceramic-like structure. All investigated properties of the geopolymers are closely connected to the precursors and the constituents of the geopolymers.",
journal = "Gels",
title = "Heat Treatment of Geopolymer Samples Obtained by Varying Concentration of Sodium Hydroxide as Constituent of Alkali Activator",
volume = "8",
pages = "333",
doi = "10.3390/gels8060333"
}

Kljajević, L. M., Nenadović, M., Ivanović, M. M., Bučevac, D., Mirković, M. M., Mladenović-Nikolić, N.,& Nenadović, S. S.. (2022). Heat Treatment of Geopolymer Samples Obtained by Varying Concentration of Sodium Hydroxide as Constituent of Alkali Activator. in Gels, 8, 333.
https://doi.org/10.3390/gels8060333

Kljajević LM, Nenadović M, Ivanović MM, Bučevac D, Mirković MM, Mladenović-Nikolić N, Nenadović SS. Heat Treatment of Geopolymer Samples Obtained by Varying Concentration of Sodium Hydroxide as Constituent of Alkali Activator. in Gels. 2022;8:333.
doi:10.3390/gels8060333 .

Kljajević, Ljiljana M., Nenadović, Miloš, Ivanović, Marija M., Bučevac, Dušan, Mirković, Miljana M., Mladenović-Nikolić, Nataša, Nenadović, Snežana S., "Heat Treatment of Geopolymer Samples Obtained by Varying Concentration of Sodium Hydroxide as Constituent of Alkali Activator" in Gels, 8 (2022):333,
https://doi.org/10.3390/gels8060333 . .

TY  - CONF
AU  - Bučevac, Dušan
AU  - Mirković, Miljana M.
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Omerašević, Mia
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10801
AB  - Comprehensive study on effect of YAG amount on densification, creep resistance and mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 o C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite containing up to 30 vol% YAG. The presence of YAG was found to be effective in improving creep resistance as well as mechanical properties of Al2O3-YAG composite such as hardness and elastic modulus. While fracture strength of the composite can be as high as that of monolithic Al2O3 (~ 300 MPa), fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness which reached value of ~ 3 MPa·m1/2. Hardness and elastic modulus were found to be 15 GPa and 371 GPa, respectively.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
T1  - Al2O3-YAG ceramic composite with improved creep resistance
SP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10801
ER  - 

@conference{
author = "Bučevac, Dušan and Mirković, Miljana M. and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Omerašević, Mia",
year = "2022",
abstract = "Comprehensive study on effect of YAG amount on densification, creep resistance and mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 o C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite containing up to 30 vol% YAG. The presence of YAG was found to be effective in improving creep resistance as well as mechanical properties of Al2O3-YAG composite such as hardness and elastic modulus. While fracture strength of the composite can be as high as that of monolithic Al2O3 (~ 300 MPa), fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness which reached value of ~ 3 MPa·m1/2. Hardness and elastic modulus were found to be 15 GPa and 371 GPa, respectively.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade",
title = "Al2O3-YAG ceramic composite with improved creep resistance",
pages = "61",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10801"
}

Bučevac, D., Mirković, M. M., Nenadović, S. S., Kljajević, L. M.,& Omerašević, M.. (2022). Al2O3-YAG ceramic composite with improved creep resistance. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade
Belgrade : Serbian Ceramic Society., 61.
https://hdl.handle.net/21.15107/rcub_vinar_10801

Bučevac D, Mirković MM, Nenadović SS, Kljajević LM, Omerašević M. Al2O3-YAG ceramic composite with improved creep resistance. in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade. 2022;:61.
https://hdl.handle.net/21.15107/rcub_vinar_10801 .

Bučevac, Dušan, Mirković, Miljana M., Nenadović, Snežana S., Kljajević, Ljiljana M., Omerašević, Mia, "Al2O3-YAG ceramic composite with improved creep resistance" in Advanced Ceramics and Application : 10th Serbian Ceramic Society Conference : program and the book of abstracts; September 26-27, 2022; Belgrade (2022):61,
https://hdl.handle.net/21.15107/rcub_vinar_10801 .

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Miloš
AU  - Petković, Marijana
AU  - Bučevac, Dušan
AU  - Pavlović, Vladimir B.
AU  - Mladenović-Nikolić, Nataša
AU  - Nenadović, Snežana B.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10246
AB  - The effect of zircon (ZrSiO4) on the physico-chemical and mechanical properties of geopolymer/zircon composites was examined in this study. Four geopolymer/zircon composites containing 10, 20, 30 and 40 wt.% zircon were prepared from metakaolin with alkali activators. Characterization of the obtained geopolymers was performed by X-ray diffraction (XRD), Scanning electron microscope (SEM-EDS), Fourier transform infrared spectroscopy (FTIR) and Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF). XRD results did not confirmed the formation of interconnected phases between added zircon, starting aluminum silicates and alkali activators. Compressive strength of prepared geopolymer was examined. The maximum obtained compressive strength of 70.15 MPa was measured in sample containing the smallest fraction of zircon, i.e., 10 wt.%. Addition of larger amount of zircon (20 wt.%) hinders the progress of geopolymerization reaction and consequently decreases compressive strength.
T2  - Science of Sintering
T1  - Physico-chemical and mechanical properties of geopolymer/zircon composites
VL  - 54
IS  - 1
SP  - 11
EP  - 24
DO  - 10.2298/SOS2201011K
ER  - 

@article{
author = "Kljajević, Ljiljana M. and Nenadović, Miloš and Petković, Marijana and Bučevac, Dušan and Pavlović, Vladimir B. and Mladenović-Nikolić, Nataša and Nenadović, Snežana B.",
year = "2022",
abstract = "The effect of zircon (ZrSiO4) on the physico-chemical and mechanical properties of geopolymer/zircon composites was examined in this study. Four geopolymer/zircon composites containing 10, 20, 30 and 40 wt.% zircon were prepared from metakaolin with alkali activators. Characterization of the obtained geopolymers was performed by X-ray diffraction (XRD), Scanning electron microscope (SEM-EDS), Fourier transform infrared spectroscopy (FTIR) and Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF). XRD results did not confirmed the formation of interconnected phases between added zircon, starting aluminum silicates and alkali activators. Compressive strength of prepared geopolymer was examined. The maximum obtained compressive strength of 70.15 MPa was measured in sample containing the smallest fraction of zircon, i.e., 10 wt.%. Addition of larger amount of zircon (20 wt.%) hinders the progress of geopolymerization reaction and consequently decreases compressive strength.",
journal = "Science of Sintering",
title = "Physico-chemical and mechanical properties of geopolymer/zircon composites",
volume = "54",
number = "1",
pages = "11-24",
doi = "10.2298/SOS2201011K"
}

Kljajević, L. M., Nenadović, M., Petković, M., Bučevac, D., Pavlović, V. B., Mladenović-Nikolić, N.,& Nenadović, S. B.. (2022). Physico-chemical and mechanical properties of geopolymer/zircon composites. in Science of Sintering, 54(1), 11-24.
https://doi.org/10.2298/SOS2201011K

Kljajević LM, Nenadović M, Petković M, Bučevac D, Pavlović VB, Mladenović-Nikolić N, Nenadović SB. Physico-chemical and mechanical properties of geopolymer/zircon composites. in Science of Sintering. 2022;54(1):11-24.
doi:10.2298/SOS2201011K .

Kljajević, Ljiljana M., Nenadović, Miloš, Petković, Marijana, Bučevac, Dušan, Pavlović, Vladimir B., Mladenović-Nikolić, Nataša, Nenadović, Snežana B., "Physico-chemical and mechanical properties of geopolymer/zircon composites" in Science of Sintering, 54, no. 1 (2022):11-24,
https://doi.org/10.2298/SOS2201011K . .

Kokunešoski, M., Kićević, D., Šaponjić, Đ., Ilić, S., Egelja, A., Šaponjić, A.,& Bučevac, D.. (2022). Primena metil metakrilata u izradi keramičkog zavrtnja mašinskom obradom ispresaka. in Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju.
https://hdl.handle.net/21.15107/rcub_vinar_11416

Kokunešoski M, Kićević D, Šaponjić Đ, Ilić S, Egelja A, Šaponjić A, Bučevac D. Primena metil metakrilata u izradi keramičkog zavrtnja mašinskom obradom ispresaka. in Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju. 2022;.
https://hdl.handle.net/21.15107/rcub_vinar_11416 .

Kokunešoski, Maja, Kićević, Dušan, Šaponjić, Đorđe, Ilić, Svetlana, Egelja, Adela, Šaponjić, Aleksandra, Bučevac, Dušan, "Primena metil metakrilata u izradi keramičkog zavrtnja mašinskom obradom ispresaka" in Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju (2022),
https://hdl.handle.net/21.15107/rcub_vinar_11416 .

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  - JOUR
AU  - Omerašević, Mia
AU  - Baščarević, Zvezdana D.
AU  - Vujasin, Radojka
AU  - Devečerski, Aleksandar
AU  - Bučevac, Dušan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10432
AB  - Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.
T2  - Science of Sintering
T1  - Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite
VL  - 54
IS  - 3
SP  - 349
EP  - 358
DO  - 10.2298/SOS2203349O
ER  - 

@article{
author = "Omerašević, Mia and Baščarević, Zvezdana D. and Vujasin, Radojka and Devečerski, Aleksandar and Bučevac, Dušan",
year = "2022",
abstract = "Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.",
journal = "Science of Sintering",
title = "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite",
volume = "54",
number = "3",
pages = "349-358",
doi = "10.2298/SOS2203349O"
}

Omerašević, M., Baščarević, Z. D., Vujasin, R., Devečerski, A.,& Bučevac, D.. (2022). Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering, 54(3), 349-358.
https://doi.org/10.2298/SOS2203349O

Omerašević M, Baščarević ZD, Vujasin R, Devečerski A, Bučevac D. Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering. 2022;54(3):349-358.
doi:10.2298/SOS2203349O .

Omerašević, Mia, Baščarević, Zvezdana D., Vujasin, Radojka, Devečerski, Aleksandar, Bučevac, Dušan, "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite" in Science of Sintering, 54, no. 3 (2022):349-358,
https://doi.org/10.2298/SOS2203349O . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Kocjan, Andraž
AU  - Bučevac, Dušan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9975
AB  - Cordierite-acicular mullite composites containing 0, 25, 50, 75 and 100 wt% of mullite were fabricated from waste MoSi2 and commercial powders of Al2O3 and spinel (MgAl2O4). Careful oxidation of pulverised waste MoSi2 rendered a precursor mixture of MoO3 and amorphous SiO2, which served as pore forming agent and SiO2 source, respectively. Evaporation of MoO3 at ∼750 °C allowed production of highly porous cordierite-mullite ceramic composite after sintering in air at 1350 °C for 4 h. The combination of equiaxed cordierite grains and elongated (prism-like) mullite grains, resulted in unique microstructure with open porosity between 53.3 and 55.6 vol% which makes the obtained composite convenient for application as diesel particulate filter material. The presence of mullite affected four key thermo-mechanical properties which determine the thermal shock resistance of cordierite-mullite composite. The best thermal shock resistance was measured in composite containing 75 wt% of mullite. It was a result of improved thermal conductivity (1.081 W/mK) and bending strength (3.62 MPa) and relatively low values of coefficient of thermal expansion (3.8 × 10−6 K−1) and elastic modulus (2.27 GPa).
T2  - Ceramics International
T1  - Novel cordierite-acicular mullite composite for diesel particulate filters
DO  - 10.1016/j.ceramint.2021.10.005
ER  - 

@article{
author = "Omerašević, Mia and Kocjan, Andraž and Bučevac, Dušan",
year = "2021",
abstract = "Cordierite-acicular mullite composites containing 0, 25, 50, 75 and 100 wt% of mullite were fabricated from waste MoSi2 and commercial powders of Al2O3 and spinel (MgAl2O4). Careful oxidation of pulverised waste MoSi2 rendered a precursor mixture of MoO3 and amorphous SiO2, which served as pore forming agent and SiO2 source, respectively. Evaporation of MoO3 at ∼750 °C allowed production of highly porous cordierite-mullite ceramic composite after sintering in air at 1350 °C for 4 h. The combination of equiaxed cordierite grains and elongated (prism-like) mullite grains, resulted in unique microstructure with open porosity between 53.3 and 55.6 vol% which makes the obtained composite convenient for application as diesel particulate filter material. The presence of mullite affected four key thermo-mechanical properties which determine the thermal shock resistance of cordierite-mullite composite. The best thermal shock resistance was measured in composite containing 75 wt% of mullite. It was a result of improved thermal conductivity (1.081 W/mK) and bending strength (3.62 MPa) and relatively low values of coefficient of thermal expansion (3.8 × 10−6 K−1) and elastic modulus (2.27 GPa).",
journal = "Ceramics International",
title = "Novel cordierite-acicular mullite composite for diesel particulate filters",
doi = "10.1016/j.ceramint.2021.10.005"
}

Omerašević, M., Kocjan, A.,& Bučevac, D.. (2021). Novel cordierite-acicular mullite composite for diesel particulate filters. in Ceramics International.
https://doi.org/10.1016/j.ceramint.2021.10.005

Omerašević M, Kocjan A, Bučevac D. Novel cordierite-acicular mullite composite for diesel particulate filters. in Ceramics International. 2021;.
doi:10.1016/j.ceramint.2021.10.005 .

Omerašević, Mia, Kocjan, Andraž, Bučevac, Dušan, "Novel cordierite-acicular mullite composite for diesel particulate filters" in Ceramics International (2021),
https://doi.org/10.1016/j.ceramint.2021.10.005 . .

TY  - JOUR
AU  - Ivanović, Marija M.
AU  - Kljajević, Ljiljana M.
AU  - Gulicovski, Jelena J.
AU  - Petković, Marijana
AU  - Janković-Častvan, Ivona
AU  - Bučevac, Dušan
AU  - Nenadović, Snežana S.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9642
AB  - This paper outlines the production of an inorganic polymer/geopolymer using a metakaolin by an environmental friendly, energy saving, clean technology to conserve natural environment and resources. The influence of alkali activation, i.e. different concentration of NaOH as a component of alkali activator mixture on the process of geopolymerization of metakaolin is investigated. Also, process of aging time of geopolymer is followed by several analytical methods. The structure of metakaolin and metakaolin based geopolymers and their physicochemical properties were studied using X-ray diffraction (XRD), Fourier transformation infrared spectroscopy (FTIR) and after 28 days scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) was applied for the surface characterization of the samples. A shift of the Si-O or Si-O-X (X=Al, Si, Na...) bands as the molarity of activator increasing during geopolymerization process was observed by FTIR. Mass spectra of geopolymers were characterized by MALDI TOF mass spectrometer. Structural reorganization of geopolymer samples occurs during the curing/aging in accordance with a geopolymerization mechanism.
T2  - Science of Sintering
T1  - The effect of the concentration of alkaline activator and aging time on the structure of metakaolin based geopolymer
VL  - 52
IS  - 2
SP  - 219
EP  - 229
DO  - 10.2298/SOS2002219I
ER  - 

@article{
author = "Ivanović, Marija M. and Kljajević, Ljiljana M. and Gulicovski, Jelena J. and Petković, Marijana and Janković-Častvan, Ivona and Bučevac, Dušan and Nenadović, Snežana S.",
year = "2020",
abstract = "This paper outlines the production of an inorganic polymer/geopolymer using a metakaolin by an environmental friendly, energy saving, clean technology to conserve natural environment and resources. The influence of alkali activation, i.e. different concentration of NaOH as a component of alkali activator mixture on the process of geopolymerization of metakaolin is investigated. Also, process of aging time of geopolymer is followed by several analytical methods. The structure of metakaolin and metakaolin based geopolymers and their physicochemical properties were studied using X-ray diffraction (XRD), Fourier transformation infrared spectroscopy (FTIR) and after 28 days scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) was applied for the surface characterization of the samples. A shift of the Si-O or Si-O-X (X=Al, Si, Na...) bands as the molarity of activator increasing during geopolymerization process was observed by FTIR. Mass spectra of geopolymers were characterized by MALDI TOF mass spectrometer. Structural reorganization of geopolymer samples occurs during the curing/aging in accordance with a geopolymerization mechanism.",
journal = "Science of Sintering",
title = "The effect of the concentration of alkaline activator and aging time on the structure of metakaolin based geopolymer",
volume = "52",
number = "2",
pages = "219-229",
doi = "10.2298/SOS2002219I"
}

Ivanović, M. M., Kljajević, L. M., Gulicovski, J. J., Petković, M., Janković-Častvan, I., Bučevac, D.,& Nenadović, S. S.. (2020). The effect of the concentration of alkaline activator and aging time on the structure of metakaolin based geopolymer. in Science of Sintering, 52(2), 219-229.
https://doi.org/10.2298/SOS2002219I

Ivanović MM, Kljajević LM, Gulicovski JJ, Petković M, Janković-Častvan I, Bučevac D, Nenadović SS. The effect of the concentration of alkaline activator and aging time on the structure of metakaolin based geopolymer. in Science of Sintering. 2020;52(2):219-229.
doi:10.2298/SOS2002219I .

Ivanović, Marija M., Kljajević, Ljiljana M., Gulicovski, Jelena J., Petković, Marijana, Janković-Častvan, Ivona, Bučevac, Dušan, Nenadović, Snežana S., "The effect of the concentration of alkaline activator and aging time on the structure of metakaolin based geopolymer" in Science of Sintering, 52, no. 2 (2020):219-229,
https://doi.org/10.2298/SOS2002219I . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Lukić, Miodrag
AU  - Savić-Biserčić, Marjetka
AU  - Savić, Andrija B.
AU  - Matović, Ljiljana
AU  - Baščarević, Zvezdana D.
AU  - Bučevac, Dušan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8563
AB  - A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019
T2  - Nuclear Engineering and Technology
T1  - Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient
VL  - 52
IS  - 1
SP  - 115
EP  - 122
DO  - 10.1016/j.net.2019.07.001
ER  - 

@article{
author = "Omerašević, Mia and Lukić, Miodrag and Savić-Biserčić, Marjetka and Savić, Andrija B. and Matović, Ljiljana and Baščarević, Zvezdana D. and Bučevac, Dušan",
year = "2020",
abstract = "A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019",
journal = "Nuclear Engineering and Technology",
title = "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient",
volume = "52",
number = "1",
pages = "115-122",
doi = "10.1016/j.net.2019.07.001"
}

Omerašević, M., Lukić, M., Savić-Biserčić, M., Savić, A. B., Matović, L., Baščarević, Z. D.,& Bučevac, D.. (2020). Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology, 52(1), 115-122.
https://doi.org/10.1016/j.net.2019.07.001

Omerašević M, Lukić M, Savić-Biserčić M, Savić AB, Matović L, Baščarević ZD, Bučevac D. Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology. 2020;52(1):115-122.
doi:10.1016/j.net.2019.07.001 .

Omerašević, Mia, Lukić, Miodrag, Savić-Biserčić, Marjetka, Savić, Andrija B., Matović, Ljiljana, Baščarević, Zvezdana D., Bučevac, Dušan, "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient" in Nuclear Engineering and Technology, 52, no. 1 (2020):115-122,
https://doi.org/10.1016/j.net.2019.07.001 . .

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Omerašević, Mia
AU  - Egelja, Adela
AU  - Radovanović, Željko
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Krstić, Vladimir
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8888
AB  - Comprehensive study on effect of YAG amount on densification, creep resistance and room-temperature mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 degrees C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good room-temperature mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis starting from aluminum nitrate and yttrium nitrate. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite with up to 30 vol% YAG. The presence of YAG was found to be very effective in improving creep resistance of Al2O3-YAG composite. Large Y3+ ions blocked diffusion along Al2O3 grain boundaries, reduced diffusivity and therefore enhanced creep resistance of Al2O3-YAG composite which continuously increased as the YAG amount increased. The presence of YAG was also found to improve mechanical properties such as hardness and elastic modulus. The improvement of these properties was ascribed to increased density of Al(2)O(3)YAG composites owing to high sintering activity of YAG powder. While fracture strength of the composite can be as high as that of monolithic Al2O3, fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness.
T2  - Ceramics International
T1  - Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite
VL  - 46
IS  - 10
SP  - 15998
EP  - 16007
DO  - 10.1016/j.ceramint.2020.03.150
ER  - 

@article{
author = "Bučevac, Dušan and Omerašević, Mia and Egelja, Adela and Radovanović, Željko and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Krstić, Vladimir",
year = "2020",
abstract = "Comprehensive study on effect of YAG amount on densification, creep resistance and room-temperature mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 degrees C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good room-temperature mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis starting from aluminum nitrate and yttrium nitrate. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite with up to 30 vol% YAG. The presence of YAG was found to be very effective in improving creep resistance of Al2O3-YAG composite. Large Y3+ ions blocked diffusion along Al2O3 grain boundaries, reduced diffusivity and therefore enhanced creep resistance of Al2O3-YAG composite which continuously increased as the YAG amount increased. The presence of YAG was also found to improve mechanical properties such as hardness and elastic modulus. The improvement of these properties was ascribed to increased density of Al(2)O(3)YAG composites owing to high sintering activity of YAG powder. While fracture strength of the composite can be as high as that of monolithic Al2O3, fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness.",
journal = "Ceramics International",
title = "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite",
volume = "46",
number = "10",
pages = "15998-16007",
doi = "10.1016/j.ceramint.2020.03.150"
}

Bučevac, D., Omerašević, M., Egelja, A., Radovanović, Ž., Kljajević, L. M., Nenadović, S. S.,& Krstić, V.. (2020). Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite. in Ceramics International, 46(10), 15998-16007.
https://doi.org/10.1016/j.ceramint.2020.03.150

Bučevac D, Omerašević M, Egelja A, Radovanović Ž, Kljajević LM, Nenadović SS, Krstić V. Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite. in Ceramics International. 2020;46(10):15998-16007.
doi:10.1016/j.ceramint.2020.03.150 .

Bučevac, Dušan, Omerašević, Mia, Egelja, Adela, Radovanović, Željko, Kljajević, Ljiljana M., Nenadović, Snežana S., Krstić, Vladimir, "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite" in Ceramics International, 46, no. 10 (2020):15998-16007,
https://doi.org/10.1016/j.ceramint.2020.03.150 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Bučevac, Dušan
AU  - Zagorac, Jelena B.
AU  - Fajar, Muhammad
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884218315827
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7817
AB  - Pyrochlore compound (Gd2Hf2O7) powder was prepared by reacting gadolinium nitrate and hafnium chloride with NaOH during solid state displacement reaction at low temperature (SSDR). The SSDR process at room temperature initially yielded amorphous powders, which crystallized after subsequent calcination to form crystalline ceramics. The formation of crystalline Gd2Hf2O7took place at temperature as low as 600 °C. The phase evolution with thermal treatment as well as powder properties such as crystallite size, lattice strain and lattice parameter were studied by X-ray powder diffraction (XRPD) at room temperature. High-density ceramic pellets free of any additives were obtained after compaction of the obtained powders and subsequent sintering at 1600 °C for 4 h in air. Rietveld analysis of X-ray diffraction (XRD) pattern of sintered sample showed that the unit cell parameter of the obtained Gd2Hf2O7is 10.5501 (2) Å with x value = 0.345(2) in Wyckoff positions, indicating small distortion of octahedra. Hardness of the sintered samples was found to be 7.1 GPa. The thermal conductivity measurements performed in temperature range from room temperature to 1000 °C showed that thermal diffusivity of sintered samples was between 0.5 and 1 mm2/s whereas thermal conductivity was between 4 and 7 W/(m K).
T2  - Ceramics International
T1  - Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature
VL  - 44
IS  - 14
SP  - 16972
EP  - 16976
DO  - 10.1016/j.ceramint.2018.06.138
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Bučevac, Dušan and Zagorac, Jelena B. and Fajar, Muhammad and Yoshida, Katsumi and Yano, Toyohiko",
year = "2018",
abstract = "Pyrochlore compound (Gd2Hf2O7) powder was prepared by reacting gadolinium nitrate and hafnium chloride with NaOH during solid state displacement reaction at low temperature (SSDR). The SSDR process at room temperature initially yielded amorphous powders, which crystallized after subsequent calcination to form crystalline ceramics. The formation of crystalline Gd2Hf2O7took place at temperature as low as 600 °C. The phase evolution with thermal treatment as well as powder properties such as crystallite size, lattice strain and lattice parameter were studied by X-ray powder diffraction (XRPD) at room temperature. High-density ceramic pellets free of any additives were obtained after compaction of the obtained powders and subsequent sintering at 1600 °C for 4 h in air. Rietveld analysis of X-ray diffraction (XRD) pattern of sintered sample showed that the unit cell parameter of the obtained Gd2Hf2O7is 10.5501 (2) Å with x value = 0.345(2) in Wyckoff positions, indicating small distortion of octahedra. Hardness of the sintered samples was found to be 7.1 GPa. The thermal conductivity measurements performed in temperature range from room temperature to 1000 °C showed that thermal diffusivity of sintered samples was between 0.5 and 1 mm2/s whereas thermal conductivity was between 4 and 7 W/(m K).",
journal = "Ceramics International",
title = "Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature",
volume = "44",
number = "14",
pages = "16972-16976",
doi = "10.1016/j.ceramint.2018.06.138"
}

Matović, B., Maletaškić, J., Bučevac, D., Zagorac, J. B., Fajar, M., Yoshida, K.,& Yano, T.. (2018). Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature. in Ceramics International, 44(14), 16972-16976.
https://doi.org/10.1016/j.ceramint.2018.06.138

Matović B, Maletaškić J, Bučevac D, Zagorac JB, Fajar M, Yoshida K, Yano T. Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature. in Ceramics International. 2018;44(14):16972-16976.
doi:10.1016/j.ceramint.2018.06.138 .

Matović, Branko, Maletaškić, Jelena, Bučevac, Dušan, Zagorac, Jelena B., Fajar, Muhammad, Yoshida, Katsumi, Yano, Toyohiko, "Synthesis, characterization and sintering of Gd2Hf2O7 powders synthesized by solid state displacement reaction at low temperature" in Ceramics International, 44, no. 14 (2018):16972-16976,
https://doi.org/10.1016/j.ceramint.2018.06.138 . .

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Maletaškić, Jelena
AU  - Omerašević, Mia
AU  - Matović, Branko
AU  - Wang, Chang-An
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1659
AB  - Porous acicular mullite (3Al(2)O(3)center dot 2SiO(2)) ceramics containing Cu3Mo2O9 as a soot oxidation catalyst was fabricated by a novel approach using commercial powders of Al2O3 and CuO, and powder obtained by controlled oxidation of ground waste MoSi2. The obtained material consisted of elongated mullite grains which are known to be effective in carbon soot removal from diesel engine exhaust. The presence of in situ created Cu3Mo2O9 was found to catalyze the carbon burnout which is an extremely important feature when it comes to filter regeneration, i.e., the captured soot removal. The carbon burnout temperature in the sample containing 12 wt% CuO was by 90 degrees C lower than that in the sample without CuO. Effect of sintering temperature as well as the effect of amount of CuO additive on mullite properties were studied. It was found that the increase in amount of CuO in samples sintered at 1300 degrees C decreased porosity and increased compressive strength of the porous mullite ceramics. The addition of 12 wt% CuO increased the strength of the porous mullite ceramics up to 70 MPa, whereas the porosity was reduced from 62% in the mullite without CuO to 44% in the mullite ceramics containing 12 wt% CuO. Although affected by the amount of CuO, the microstructure still consisted of elongated mullite grains.
T2  - Ceramics International
T1  - Porous acicular mullite ceramics fabricated with in situ formed soot oxidation catalyst obtained from waste MoSi2
VL  - 43
IS  - 13
SP  - 9815
EP  - 9822
DO  - 10.1016/j.ceramint.2017.04.161
ER  - 

@article{
author = "Bučevac, Dušan and Maletaškić, Jelena and Omerašević, Mia and Matović, Branko and Wang, Chang-An",
year = "2017",
abstract = "Porous acicular mullite (3Al(2)O(3)center dot 2SiO(2)) ceramics containing Cu3Mo2O9 as a soot oxidation catalyst was fabricated by a novel approach using commercial powders of Al2O3 and CuO, and powder obtained by controlled oxidation of ground waste MoSi2. The obtained material consisted of elongated mullite grains which are known to be effective in carbon soot removal from diesel engine exhaust. The presence of in situ created Cu3Mo2O9 was found to catalyze the carbon burnout which is an extremely important feature when it comes to filter regeneration, i.e., the captured soot removal. The carbon burnout temperature in the sample containing 12 wt% CuO was by 90 degrees C lower than that in the sample without CuO. Effect of sintering temperature as well as the effect of amount of CuO additive on mullite properties were studied. It was found that the increase in amount of CuO in samples sintered at 1300 degrees C decreased porosity and increased compressive strength of the porous mullite ceramics. The addition of 12 wt% CuO increased the strength of the porous mullite ceramics up to 70 MPa, whereas the porosity was reduced from 62% in the mullite without CuO to 44% in the mullite ceramics containing 12 wt% CuO. Although affected by the amount of CuO, the microstructure still consisted of elongated mullite grains.",
journal = "Ceramics International",
title = "Porous acicular mullite ceramics fabricated with in situ formed soot oxidation catalyst obtained from waste MoSi2",
volume = "43",
number = "13",
pages = "9815-9822",
doi = "10.1016/j.ceramint.2017.04.161"
}

Bučevac, D., Maletaškić, J., Omerašević, M., Matović, B.,& Wang, C.. (2017). Porous acicular mullite ceramics fabricated with in situ formed soot oxidation catalyst obtained from waste MoSi2. in Ceramics International, 43(13), 9815-9822.
https://doi.org/10.1016/j.ceramint.2017.04.161

Bučevac D, Maletaškić J, Omerašević M, Matović B, Wang C. Porous acicular mullite ceramics fabricated with in situ formed soot oxidation catalyst obtained from waste MoSi2. in Ceramics International. 2017;43(13):9815-9822.
doi:10.1016/j.ceramint.2017.04.161 .

Bučevac, Dušan, Maletaškić, Jelena, Omerašević, Mia, Matović, Branko, Wang, Chang-An, "Porous acicular mullite ceramics fabricated with in situ formed soot oxidation catalyst obtained from waste MoSi2" in Ceramics International, 43, no. 13 (2017):9815-9822,
https://doi.org/10.1016/j.ceramint.2017.04.161 . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Ružić, Jovana
AU  - Vasiljević-Nedić, Bojana
AU  - Baščarević, Zvezdana D.
AU  - Bučevac, Dušan
AU  - Orlić, Jovana
AU  - Matović, Ljiljana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1734
AB  - Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.
T2  - Ceramics International
T1  - Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing
VL  - 43
IS  - 16
SP  - 13500
EP  - 13504
DO  - 10.1016/j.ceramint.2017.07.055
ER  - 

@article{
author = "Omerašević, Mia and Ružić, Jovana and Vasiljević-Nedić, Bojana and Baščarević, Zvezdana D. and Bučevac, Dušan and Orlić, Jovana and Matović, Ljiljana",
year = "2017",
abstract = "Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.",
journal = "Ceramics International",
title = "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing",
volume = "43",
number = "16",
pages = "13500-13504",
doi = "10.1016/j.ceramint.2017.07.055"
}

Omerašević, M., Ružić, J., Vasiljević-Nedić, B., Baščarević, Z. D., Bučevac, D., Orlić, J.,& Matović, L.. (2017). Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International, 43(16), 13500-13504.
https://doi.org/10.1016/j.ceramint.2017.07.055

Omerašević M, Ružić J, Vasiljević-Nedić B, Baščarević ZD, Bučevac D, Orlić J, Matović L. Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International. 2017;43(16):13500-13504.
doi:10.1016/j.ceramint.2017.07.055 .

Omerašević, Mia, Ružić, Jovana, Vasiljević-Nedić, Bojana, Baščarević, Zvezdana D., Bučevac, Dušan, Orlić, Jovana, Matović, Ljiljana, "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing" in Ceramics International, 43, no. 16 (2017):13500-13504,
https://doi.org/10.1016/j.ceramint.2017.07.055 . .

TY  - CONF
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Balaz, Nelu
AU  - Milutinov, Miodrag
AU  - Vasiljević, Zorka
AU  - Labus, Nebojša
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - http://dais.sanu.ac.rs/123456789/15430
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7557
AB  - Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.
PB  - Belgrade : Institute for Multidisciplinary Research of the University of Belgrade
C3  - Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
T1  - Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite
SP  - 102
EP  - 102
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7557
ER  - 

@conference{
editor = "Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir",
author = "Luković, Miloljub D. and Nikolić, Maria Vesna and Balaz, Nelu and Milutinov, Miodrag and Vasiljević, Zorka and Labus, Nebojša and Aleksić, Obrad S.",
year = "2017",
abstract = "Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.",
publisher = "Belgrade : Institute for Multidisciplinary Research of the University of Belgrade",
journal = "Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia",
title = "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite",
pages = "102-102",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7557"
}

Matović, B., Branković, Z., Bučevac, D., Srdić, V., Luković, M. D., Nikolić, M. V., Balaz, N., Milutinov, M., Vasiljević, Z., Labus, N.,& Aleksić, O. S.. (2017). Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research of the University of Belgrade., 102-102.
https://hdl.handle.net/21.15107/rcub_vinar_7557

Matović B, Branković Z, Bučevac D, Srdić V, Luković MD, Nikolić MV, Balaz N, Milutinov M, Vasiljević Z, Labus N, Aleksić OS. Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia. 2017;:102-102.
https://hdl.handle.net/21.15107/rcub_vinar_7557 .

Matović, Branko, Branković, Zorica, Bučevac, Dušan, Srdić, Vladimir, Luković, Miloljub D., Nikolić, Maria Vesna, Balaz, Nelu, Milutinov, Miodrag, Vasiljević, Zorka, Labus, Nebojša, Aleksić, Obrad S., "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite" in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia (2017):102-102,
https://hdl.handle.net/21.15107/rcub_vinar_7557 .

TY  - JOUR
AU  - Matović, Branko
AU  - Bučevac, Dušan
AU  - Urbanović, Vladimir
AU  - Stanković, Nadežda
AU  - Daneu, Nina
AU  - Volkov-Husović, Tatjana
AU  - Babić, Biljana M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1134
AB  - Additive-free beta-SiC nanopowders were densified by using high-pressure anvil-type with hollows apparatus at the pressure of 4 GPa in the range of 1500-1900 degrees C. The starting powder with average particle size of 10 nm was synthesized by a sol-gel process. Crystallite size and lattice parameters of the samples have been studied at room temperature by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that the size of the crystallites gradually increases from 16 to 51 nm with increasing sintering temperature (1500 to 1900 degrees C). Fully densified sample ( GT 99%) was obtained at a sintering temperature of 1900 degrees C for 60 s. This sample exhibits nano-hardness and Youngs modulus of elasticity of 35 GPa and 450 GPa, respectively. Modified vibratory cavitation test method was used for laboratory testing of the cavitation resistance. A very low erosion level with mass loss 0.1% after 10 h was exhibited during the cavitation test. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Journal of the European Ceramic Society
T1  - Monolithic nanocrystalline SiC ceramics
VL  - 36
IS  - 12
SP  - 3005
EP  - 3010
DO  - 10.1016/j.jeurceramsoc.2015.10.031
ER  - 

@article{
author = "Matović, Branko and Bučevac, Dušan and Urbanović, Vladimir and Stanković, Nadežda and Daneu, Nina and Volkov-Husović, Tatjana and Babić, Biljana M.",
year = "2016",
abstract = "Additive-free beta-SiC nanopowders were densified by using high-pressure anvil-type with hollows apparatus at the pressure of 4 GPa in the range of 1500-1900 degrees C. The starting powder with average particle size of 10 nm was synthesized by a sol-gel process. Crystallite size and lattice parameters of the samples have been studied at room temperature by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was found that the size of the crystallites gradually increases from 16 to 51 nm with increasing sintering temperature (1500 to 1900 degrees C). Fully densified sample ( GT 99%) was obtained at a sintering temperature of 1900 degrees C for 60 s. This sample exhibits nano-hardness and Youngs modulus of elasticity of 35 GPa and 450 GPa, respectively. Modified vibratory cavitation test method was used for laboratory testing of the cavitation resistance. A very low erosion level with mass loss 0.1% after 10 h was exhibited during the cavitation test. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Journal of the European Ceramic Society",
title = "Monolithic nanocrystalline SiC ceramics",
volume = "36",
number = "12",
pages = "3005-3010",
doi = "10.1016/j.jeurceramsoc.2015.10.031"
}

Matović, B., Bučevac, D., Urbanović, V., Stanković, N., Daneu, N., Volkov-Husović, T.,& Babić, B. M.. (2016). Monolithic nanocrystalline SiC ceramics. in Journal of the European Ceramic Society, 36(12), 3005-3010.
https://doi.org/10.1016/j.jeurceramsoc.2015.10.031

Matović B, Bučevac D, Urbanović V, Stanković N, Daneu N, Volkov-Husović T, Babić BM. Monolithic nanocrystalline SiC ceramics. in Journal of the European Ceramic Society. 2016;36(12):3005-3010.
doi:10.1016/j.jeurceramsoc.2015.10.031 .

Matović, Branko, Bučevac, Dušan, Urbanović, Vladimir, Stanković, Nadežda, Daneu, Nina, Volkov-Husović, Tatjana, Babić, Biljana M., "Monolithic nanocrystalline SiC ceramics" in Journal of the European Ceramic Society, 36, no. 12 (2016):3005-3010,
https://doi.org/10.1016/j.jeurceramsoc.2015.10.031 . .