TY  - CONF
AU  - Obradović, Nina
AU  - Peleš, Adriana
AU  - Đorđević, N.
AU  - Marković, Smilja
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2013
UR  - http://dais.sanu.ac.rs/123456789/402
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7420
AB  - According to its low temperature thermal expansion coefficient, low dielectric constant, also good mechanical properties, cordierite, 2MgO×2Al2O3×5SiO2, represents a very attractive hightemperature ceramic material. In this study, cordierite was prepared by solid state reaction of the MgO, Al2O3 and SiO2 mixture. One of the components from the mixture, SiO2, was mechanically activated in a high energy ball mill during 5 and 10 minutes. The applied pressure before the sintering process was 2 t/cm2. Sintering process of mixtures containing non-activated and activated SiO2 powder was performed at 1350 oC for 4h in the air atmosphere. The phase composition of starting oxides and sintered samples was analyzed by the X-ray diffraction method. Particle size analysis was performed to investigate the differences between starting components. Scanning electron microscopy was done to analyze the microstructure of both components and sintered samples. This paper investigates the influence of one mechanically activated SiO2 component on the densities of green bodies as well as on the sintered samples, along with electrical properties of cordierite ceramics.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Influence of one activated component on the sintering process of three phase system
SP  - 103
EP  - 103
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7420
ER  - 

@conference{
author = "Obradović, Nina and Peleš, Adriana and Đorđević, N. and Marković, Smilja and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2013",
abstract = "According to its low temperature thermal expansion coefficient, low dielectric constant, also good mechanical properties, cordierite, 2MgO×2Al2O3×5SiO2, represents a very attractive hightemperature ceramic material. In this study, cordierite was prepared by solid state reaction of the MgO, Al2O3 and SiO2 mixture. One of the components from the mixture, SiO2, was mechanically activated in a high energy ball mill during 5 and 10 minutes. The applied pressure before the sintering process was 2 t/cm2. Sintering process of mixtures containing non-activated and activated SiO2 powder was performed at 1350 oC for 4h in the air atmosphere. The phase composition of starting oxides and sintered samples was analyzed by the X-ray diffraction method. Particle size analysis was performed to investigate the differences between starting components. Scanning electron microscopy was done to analyze the microstructure of both components and sintered samples. This paper investigates the influence of one mechanically activated SiO2 component on the densities of green bodies as well as on the sintered samples, along with electrical properties of cordierite ceramics.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Influence of one activated component on the sintering process of three phase system",
pages = "103-103",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7420"
}

Obradović, N., Peleš, A., Đorđević, N., Marković, S., Mitrić, M.,& Pavlović, V. B.. (2013). Influence of one activated component on the sintering process of three phase system. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 103-103.
https://hdl.handle.net/21.15107/rcub_vinar_7420

Obradović N, Peleš A, Đorđević N, Marković S, Mitrić M, Pavlović VB. Influence of one activated component on the sintering process of three phase system. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:103-103.
https://hdl.handle.net/21.15107/rcub_vinar_7420 .

Obradović, Nina, Peleš, Adriana, Đorđević, N., Marković, Smilja, Mitrić, Miodrag, Pavlović, Vladimir B., "Influence of one activated component on the sintering process of three phase system" in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):103-103,
https://hdl.handle.net/21.15107/rcub_vinar_7420 .

TY  - CONF
AU  - Đorđević, N.
AU  - Obradović, Nina
AU  - Filipović, Suzana
AU  - Živojinović, Jelena
AU  - Mitrić, Miodrag
AU  - Marković, Smilja
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/499
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7455
AB  - Cordierite, 2MgO2Al2O35SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. In order to accelerate the process of sintering, 5.00 mass% TiO2 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-80 minutes. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders was analyzed by the X-ray diffraction method. XRD showed decrease in peaks intensities and no new phases. Furthermore, differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation has some influence on temperatures of phase transitions.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
T1  - Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System
SP  - 7
EP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7455
ER  - 

@conference{
author = "Đorđević, N. and Obradović, Nina and Filipović, Suzana and Živojinović, Jelena and Mitrić, Miodrag and Marković, Smilja",
year = "2012",
abstract = "Cordierite, 2MgO2Al2O35SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. In order to accelerate the process of sintering, 5.00 mass% TiO2 has been added to the starting mixtures. The mechanical activation of the starting mixtures was performed in a high energy ball mill during 0-80 minutes. The particle size analysis (PSA) was employed in order to determine the changes in the particle size of the mechanically treated powders. The phase composition of the starting powders was analyzed by the X-ray diffraction method. XRD showed decrease in peaks intensities and no new phases. Furthermore, differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Based on the obtained DTA results, it was established that mechanical activation has some influence on temperatures of phase transitions.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade",
title = "Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System",
pages = "7-7",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7455"
}

Đorđević, N., Obradović, N., Filipović, S., Živojinović, J., Mitrić, M.,& Marković, S.. (2012). Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade
Belgrade : Serbian Ceramic Society., 7-7.
https://hdl.handle.net/21.15107/rcub_vinar_7455

Đorđević N, Obradović N, Filipović S, Živojinović J, Mitrić M, Marković S. Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System. in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade. 2012;:7-7.
https://hdl.handle.net/21.15107/rcub_vinar_7455 .

Đorđević, N., Obradović, Nina, Filipović, Suzana, Živojinović, Jelena, Mitrić, Miodrag, Marković, Smilja, "Influence of Mechanical Activation on the Constituents of the MgO-Al2O3-SiO2-TiO2 System" in Advanced Ceramics and Application : 1st Serbian Ceramic Society Conference : program and the book of abstracts; May 10-11, 2012; Belgrade (2012):7-7,
https://hdl.handle.net/21.15107/rcub_vinar_7455 .

TY  - CONF
AU  - Obradović, Nina
AU  - Đorđević, N.
AU  - Peleš, Adriana
AU  - Mitrić, Miodrag
AU  - Pavlović, Vladimir B.
PY  - 2012
UR  - http://dais.sanu.ac.rs/123456789/525
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7468
AB  - Mechanical activation is widely used for sample preparation before the sintering process. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO_2Al2O3_5SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6 t/cm2. Differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Sintering process was performed at 1350 °C for 4 h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze both compacted and sintered sample microstructure. This paper deals with the influence of compaction pressure on the densities of green bodies as well as on the sintered samples, along with electrical properties
PB  - Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade
C3  - Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
T1  - Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics
SP  - 61
EP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7468
ER  - 

@conference{
author = "Obradović, Nina and Đorđević, N. and Peleš, Adriana and Mitrić, Miodrag and Pavlović, Vladimir B.",
year = "2012",
abstract = "Mechanical activation is widely used for sample preparation before the sintering process. However, the influence of pressure, which is used for compaction, has not been completely investigated. Cordierite, 2MgO_2Al2O3_5SiO2, is a very attractive high-temperature ceramic material, due to its outstanding electrical characteristics, such as the low temperature expansion coefficient, low dielectric constant and good mechanical properties. Based on our previous investigation, the mechanical activation of the starting mixtures with 5.00 mass% TiO2 was performed in a high energy ball mill during 10 minutes. Compaction pressure varied from 0.5 to 6 t/cm2. Differential thermal analysis (DTA) was used in order to determine characteristic temperatures within the system during heating. Sintering process was performed at 1350 °C for 4 h in air atmosphere. The phase composition of activated and sintered samples was analyzed by the X-ray diffraction method. Scanning electron microscopy was performed to analyze both compacted and sintered sample microstructure. This paper deals with the influence of compaction pressure on the densities of green bodies as well as on the sintered samples, along with electrical properties",
publisher = "Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade",
journal = "Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts",
title = "Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7468"
}

Obradović, N., Đorđević, N., Peleš, A., Mitrić, M.,& Pavlović, V. B.. (2012). Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics. in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts
Belgrade : Materials Research Society of Serbia; Institute of Technical Sciences of SASA; Vinča Institute of Nuclear Sciences, University of Belgrade., 61-61.
https://hdl.handle.net/21.15107/rcub_vinar_7468

Obradović N, Đorđević N, Peleš A, Mitrić M, Pavlović VB. Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics. in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts. 2012;:61-61.
https://hdl.handle.net/21.15107/rcub_vinar_7468 .

Obradović, Nina, Đorđević, N., Peleš, Adriana, Mitrić, Miodrag, Pavlović, Vladimir B., "Compaction pressure's influence on density and electrical properties of sintered cordierite-based ceramics" in Joint Event of the 11th Young Researchers’ Conference: Materials Science and Engineering and the 1st European Early Stage Researches’ Conference on Hydrogen Storage: Program and the Book of Abstracts (2012):61-61,
https://hdl.handle.net/21.15107/rcub_vinar_7468 .

TY  - CONF
AU  - Ajduković, Zorica
AU  - Petrović, Milica B.
AU  - Milićević, J.
AU  - Đorđević, N.
AU  - Ignjatović, Nenad L.
AU  - Savić, Vojin
AU  - Najman, Stevo
AU  - Mihailović, Dragan
AU  - Vasiljević, P.
AU  - Uskoković, Dragan
PY  - 2011
UR  - http://dais.sanu.ac.rs/123456789/674
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7505
AB  - One of the trends in the treatment of reduced bone density is in oral implantology through the use of new biomaterials with paramagnetic properties. In this in vivo study the effect of Ca /Co-HAp nanoparticles (calcium/cobalt-hydroxiapatite) in the regeneration of the reduced alveolar bone density in experimental animals was examined by analyzing both the biochemical and histochemical markers and through analysis of alveolar bone density. The research was carried out on female Westar rats, aged 6-8 weeks, whom have been implanted nanobiomaterial in reduced alveolar bone density. Good results in regeneration of reduced bone density were achieved in six weeks after implantation of the nanoparticles with paramagnetic properties. Biochemical markers of osteogenesis showed statistically significant rise. Histological analysis revealed high level reparatory skills of the biocomposite implanted in the bone defect, while X-ray analyses evidenced rise of bone density. Implantation of Ca/Co-Hap enables rapid new formation, thus becoming the material of choice for accelerated reduced bone density regeneration.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
T1  - Paramagnetic nanoparticles in the regeneration of the reduced alveolar bone density
SP  - 161
EP  - 161
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7505
ER  - 

@conference{
author = "Ajduković, Zorica and Petrović, Milica B. and Milićević, J. and Đorđević, N. and Ignjatović, Nenad L. and Savić, Vojin and Najman, Stevo and Mihailović, Dragan and Vasiljević, P. and Uskoković, Dragan",
year = "2011",
abstract = "One of the trends in the treatment of reduced bone density is in oral implantology through the use of new biomaterials with paramagnetic properties. In this in vivo study the effect of Ca /Co-HAp nanoparticles (calcium/cobalt-hydroxiapatite) in the regeneration of the reduced alveolar bone density in experimental animals was examined by analyzing both the biochemical and histochemical markers and through analysis of alveolar bone density. The research was carried out on female Westar rats, aged 6-8 weeks, whom have been implanted nanobiomaterial in reduced alveolar bone density. Good results in regeneration of reduced bone density were achieved in six weeks after implantation of the nanoparticles with paramagnetic properties. Biochemical markers of osteogenesis showed statistically significant rise. Histological analysis revealed high level reparatory skills of the biocomposite implanted in the bone defect, while X-ray analyses evidenced rise of bone density. Implantation of Ca/Co-Hap enables rapid new formation, thus becoming the material of choice for accelerated reduced bone density regeneration.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts",
title = "Paramagnetic nanoparticles in the regeneration of the reduced alveolar bone density",
pages = "161-161",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7505"
}

Ajduković, Z., Petrović, M. B., Milićević, J., Đorđević, N., Ignjatović, N. L., Savić, V., Najman, S., Mihailović, D., Vasiljević, P.,& Uskoković, D.. (2011). Paramagnetic nanoparticles in the regeneration of the reduced alveolar bone density. in The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 161-161.
https://hdl.handle.net/21.15107/rcub_vinar_7505

Ajduković Z, Petrović MB, Milićević J, Đorđević N, Ignjatović NL, Savić V, Najman S, Mihailović D, Vasiljević P, Uskoković D. Paramagnetic nanoparticles in the regeneration of the reduced alveolar bone density. in The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts. 2011;:161-161.
https://hdl.handle.net/21.15107/rcub_vinar_7505 .

Ajduković, Zorica, Petrović, Milica B., Milićević, J., Đorđević, N., Ignjatović, Nenad L., Savić, Vojin, Najman, Stevo, Mihailović, Dragan, Vasiljević, P., Uskoković, Dragan, "Paramagnetic nanoparticles in the regeneration of the reduced alveolar bone density" in The Thirteenth Annual Conference YUCOMAT 2011: Programme and the Book of Abstracts (2011):161-161,
https://hdl.handle.net/21.15107/rcub_vinar_7505 .