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  - Cvijović-Alagić, Ivana
AU  - Laketić, Slađana
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Veljović, Đorđe
AU  - Rakin, Marko
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11326
AB  - Hard-tissue replacements are most commonly made from the Ti-based materials, such ascommercially pure titanium (CP-Ti) and Ti-6Al-4V (mass%) alloy, because of their exceptionalbiocompatible properties combined with the excellent corrosive and mechanical characteristics [1].More recently, efforts have been made to additionally enhance the properties of the metallicimplants through the careful selection of the alloy composition and surface modification technics[2,3]. As a result, second-generation β-type Ti alloys, containing non-toxic elements, have beendeveloped. One of the promising β-type implant alloys is Ti-13Nb-13Zr (mass%). Even though thecorrosion resistance and mechanical properties of this alloy are improved in comparison to thecommonly used metallic implant materials, its biocompatible and osseointegration properties canand must be additionally enhanced. For that purpose several surface modification technics can beused, however, laser irradiation stands out as the most promising one. Because of that scope of thepresent research was to investigate the possibility of successful surface modification of the mostcommonly used implant material, i.e. CP-Ti, and the second-generation Ti-13Nb-13Zr alloy byutilizing the easy-to-apply laser irradiation method in order to obtain improved implant tribocorrosiveproperties and enhanced biointegration and bioactivity.Laser surface modifications were conducted using the Nd:YAG system in the air and argonatmosphere under different laser output energies. Implant materials surface morphologies after thelaser irradiation treatment were investigated using the field-emission scanning electron microscopy(FE-SEM) and optical profilometry, while the impact of the laser irradiation on the implantmaterials surface characteristics were examined using the energy dispersive spectrometry (EDS)and microhardness measurements.Conducted research showed that utilization of the Nd:YAG laser irradiation resulted in significantalterations of the CP-Ti and Ti-13Nb-13Zr alloy surface chemistry, morphology and microhardness.Laser irradiation of both investigated materials led to the formation of visible microcracks andhydrodynamic effects in the central part of the irradiated area, while traces of melted and solidifiedmaterial were observed at its periphery. More pronounced morphological changes were inducedduring the laser irradiation in an argon atmosphere, while a higher degree of texturing was recordedat the surface of the Ti-13Nb-13Zr alloy. At the irradiated surfaces, the formation of the oxide layer,predominantly composed of Ti-oxide particles, was detected. Surface oxides are desirable sincetheir presence can improve the implant material bioactivity with a simultaneous increase of thetribo-corrosive properties through the formation of the hard corrosion resistance surface film. Laserinducedchemical and morphological alterations were more distinctive in the case of the Ti-13Nb-13Zr alloy.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement
SP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11326
ER  - 

@conference{
author = "Cvijović-Alagić, Ivana and Laketić, Slađana and Momčilović, Miloš and Ciganović, Jovan and Veljović, Đorđe and Rakin, Marko",
year = "2022",
abstract = "Hard-tissue replacements are most commonly made from the Ti-based materials, such ascommercially pure titanium (CP-Ti) and Ti-6Al-4V (mass%) alloy, because of their exceptionalbiocompatible properties combined with the excellent corrosive and mechanical characteristics [1].More recently, efforts have been made to additionally enhance the properties of the metallicimplants through the careful selection of the alloy composition and surface modification technics[2,3]. As a result, second-generation β-type Ti alloys, containing non-toxic elements, have beendeveloped. One of the promising β-type implant alloys is Ti-13Nb-13Zr (mass%). Even though thecorrosion resistance and mechanical properties of this alloy are improved in comparison to thecommonly used metallic implant materials, its biocompatible and osseointegration properties canand must be additionally enhanced. For that purpose several surface modification technics can beused, however, laser irradiation stands out as the most promising one. Because of that scope of thepresent research was to investigate the possibility of successful surface modification of the mostcommonly used implant material, i.e. CP-Ti, and the second-generation Ti-13Nb-13Zr alloy byutilizing the easy-to-apply laser irradiation method in order to obtain improved implant tribocorrosiveproperties and enhanced biointegration and bioactivity.Laser surface modifications were conducted using the Nd:YAG system in the air and argonatmosphere under different laser output energies. Implant materials surface morphologies after thelaser irradiation treatment were investigated using the field-emission scanning electron microscopy(FE-SEM) and optical profilometry, while the impact of the laser irradiation on the implantmaterials surface characteristics were examined using the energy dispersive spectrometry (EDS)and microhardness measurements.Conducted research showed that utilization of the Nd:YAG laser irradiation resulted in significantalterations of the CP-Ti and Ti-13Nb-13Zr alloy surface chemistry, morphology and microhardness.Laser irradiation of both investigated materials led to the formation of visible microcracks andhydrodynamic effects in the central part of the irradiated area, while traces of melted and solidifiedmaterial were observed at its periphery. More pronounced morphological changes were inducedduring the laser irradiation in an argon atmosphere, while a higher degree of texturing was recordedat the surface of the Ti-13Nb-13Zr alloy. At the irradiated surfaces, the formation of the oxide layer,predominantly composed of Ti-oxide particles, was detected. Surface oxides are desirable sincetheir presence can improve the implant material bioactivity with a simultaneous increase of thetribo-corrosive properties through the formation of the hard corrosion resistance surface film. Laserinducedchemical and morphological alterations were more distinctive in the case of the Ti-13Nb-13Zr alloy.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement",
pages = "20",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11326"
}

Cvijović-Alagić, I., Laketić, S., Momčilović, M., Ciganović, J., Veljović, Đ.,& Rakin, M.. (2022). Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 20.
https://hdl.handle.net/21.15107/rcub_vinar_11326

Cvijović-Alagić I, Laketić S, Momčilović M, Ciganović J, Veljović Đ, Rakin M. Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:20.
https://hdl.handle.net/21.15107/rcub_vinar_11326 .

Cvijović-Alagić, Ivana, Laketić, Slađana, Momčilović, Miloš, Ciganović, Jovan, Veljović, Đorđe, Rakin, Marko, "Laser irradiation as an easy-to-apply method for Ti-based implant materials enhancement" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):20,
https://hdl.handle.net/21.15107/rcub_vinar_11326 .

TY  - JOUR
AU  - Dimić, Ivana
AU  - Cvijović-Alagić, Ivana
AU  - Rakin, Marica
AU  - Perić-Grujić, Aleksandra
AU  - Rakin, Marko
AU  - Bugarski, Branko
AU  - Putić, Slaviša
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11338
AB  - Due to their excellent characteristics, such as chemical inertness, mechanical resistance, low Young's modulus, high corrosion resistance, and outstanding biocompatibility, titanium and its alloys are the most used metallic materials for biomedical applications. In dental practice, these materials have demonstrated success as biomedical devices which are used for repairing and replacing failed hard tissue. However, the oral cavity is constantly subjected to the changes in the pH value changes and such an environment is strongly corrosive for titanium dental implants. The objective of this study was to examine ion release from commercially pure titanium (cpTi) in artificial saliva with different pH values (4.0, 5.5 and 7.5). The concentrations of released titanium ions were determined after 1, 3 and 6 weeks using Inductively Coupled Plasma - Mass Spectrometry. The results indicate that the ion release from commercially pure titanium in the artificial saliva is dependent both on the pH of artificial saliva and duration of immersion.
AB  - Titan i njegove legure su najčešće korišćeni metalni materijali za biomedicinsku primenu zbog njihovih odličnih karakteristika, kao što su hemijska inertnost, mehanička otpornost, nizak Jungov modul, visoka otpornost na koroziju i izvanredna biokompatibilnost. U stomatološkoj praksi, titan i njegove legure su pokazali uspeh kao biomedicinski uređaji, koji se koriste za popravku ili zamenu oštećenih čvrstih tkiva. Međutim, usna duplja je stalno izložena promenama pH vrednosti i takva sredina je izuzetno koroziona za dentalne implantate izrađene od titana. Cilj ovog rada je bio da se ispita otpuštanje jona iz komercijalno čistog titana (cpTi) u veštačkoj pljuvačci različite pH vrednosti (4.0, 5.5 i 7.5). Koncentracije otpuštenih jona titana su određene posle 1, 3 i 6 nedelja korišćenjem induktivno spregnute plazme sa masenom spektrometrijom (ICP-MS). Rezultati pokazuju da otpuštanje jona iz komercijalno čistog titana zavisi i od pH vrednosti veštačke pljuvačke i od dužine trajanja potapanja.
T2  - Acta periodica technologica
T1  - Effect of the pH of artificial saliva on ion release from commercially pure titanium
T1  - Uticaj pH vrednosti veštačke pljuvačke na otpuštanje jona iz komercijalno čistog titana
IS  - 44
SP  - 207
EP  - 215
DO  - 10.2298/APT1344207D
ER  - 

@article{
author = "Dimić, Ivana and Cvijović-Alagić, Ivana and Rakin, Marica and Perić-Grujić, Aleksandra and Rakin, Marko and Bugarski, Branko and Putić, Slaviša",
year = "2013",
abstract = "Due to their excellent characteristics, such as chemical inertness, mechanical resistance, low Young's modulus, high corrosion resistance, and outstanding biocompatibility, titanium and its alloys are the most used metallic materials for biomedical applications. In dental practice, these materials have demonstrated success as biomedical devices which are used for repairing and replacing failed hard tissue. However, the oral cavity is constantly subjected to the changes in the pH value changes and such an environment is strongly corrosive for titanium dental implants. The objective of this study was to examine ion release from commercially pure titanium (cpTi) in artificial saliva with different pH values (4.0, 5.5 and 7.5). The concentrations of released titanium ions were determined after 1, 3 and 6 weeks using Inductively Coupled Plasma - Mass Spectrometry. The results indicate that the ion release from commercially pure titanium in the artificial saliva is dependent both on the pH of artificial saliva and duration of immersion., Titan i njegove legure su najčešće korišćeni metalni materijali za biomedicinsku primenu zbog njihovih odličnih karakteristika, kao što su hemijska inertnost, mehanička otpornost, nizak Jungov modul, visoka otpornost na koroziju i izvanredna biokompatibilnost. U stomatološkoj praksi, titan i njegove legure su pokazali uspeh kao biomedicinski uređaji, koji se koriste za popravku ili zamenu oštećenih čvrstih tkiva. Međutim, usna duplja je stalno izložena promenama pH vrednosti i takva sredina je izuzetno koroziona za dentalne implantate izrađene od titana. Cilj ovog rada je bio da se ispita otpuštanje jona iz komercijalno čistog titana (cpTi) u veštačkoj pljuvačci različite pH vrednosti (4.0, 5.5 i 7.5). Koncentracije otpuštenih jona titana su određene posle 1, 3 i 6 nedelja korišćenjem induktivno spregnute plazme sa masenom spektrometrijom (ICP-MS). Rezultati pokazuju da otpuštanje jona iz komercijalno čistog titana zavisi i od pH vrednosti veštačke pljuvačke i od dužine trajanja potapanja.",
journal = "Acta periodica technologica",
title = "Effect of the pH of artificial saliva on ion release from commercially pure titanium, Uticaj pH vrednosti veštačke pljuvačke na otpuštanje jona iz komercijalno čistog titana",
number = "44",
pages = "207-215",
doi = "10.2298/APT1344207D"
}

Dimić, I., Cvijović-Alagić, I., Rakin, M., Perić-Grujić, A., Rakin, M., Bugarski, B.,& Putić, S.. (2013). Effect of the pH of artificial saliva on ion release from commercially pure titanium. in Acta periodica technologica(44), 207-215.
https://doi.org/10.2298/APT1344207D

Dimić I, Cvijović-Alagić I, Rakin M, Perić-Grujić A, Rakin M, Bugarski B, Putić S. Effect of the pH of artificial saliva on ion release from commercially pure titanium. in Acta periodica technologica. 2013;(44):207-215.
doi:10.2298/APT1344207D .

Dimić, Ivana, Cvijović-Alagić, Ivana, Rakin, Marica, Perić-Grujić, Aleksandra, Rakin, Marko, Bugarski, Branko, Putić, Slaviša, "Effect of the pH of artificial saliva on ion release from commercially pure titanium" in Acta periodica technologica, no. 44 (2013):207-215,
https://doi.org/10.2298/APT1344207D . .