TY  - JOUR
AU  - Matović, Branko
AU  - Urbanovich, Vladimir
AU  - Girman, Vladimir
AU  - Lisnichuk, Maksym
AU  - Nikolić, Dobrica
AU  - Erčić, Jelena
AU  - Cvijović-Alagić, Ivana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10160
AB  - Additive-free boron carbide (B4C) powders were densified at 4 GPa using the high-pressure “anvil-type with hollows” apparatus in the temperature range of 1500–1900 °C. The boron carbide ceramics prepared by this method showed a hardness of 37 GPa, which is very close to the hardness of mono-crystal boron carbide. The study showed that the boron carbide grains are uniformly sized without observed grain growth in the sintered materials. Obtained results revealed that high-pressure sintering can be a very effective low-temperature densification method for the obtainment of additive-free B4C ceramics. Moreover, the process can be scaled-up for the production of large-size composites required in various cutting tools and other extreme condition applications.
T2  - Materials Letters
T1  - Densification of boron carbide under high pressure
VL  - 314
SP  - 131877
DO  - 10.1016/j.matlet.2022.131877
ER  - 

@article{
author = "Matović, Branko and Urbanovich, Vladimir and Girman, Vladimir and Lisnichuk, Maksym and Nikolić, Dobrica and Erčić, Jelena and Cvijović-Alagić, Ivana",
year = "2022",
abstract = "Additive-free boron carbide (B4C) powders were densified at 4 GPa using the high-pressure “anvil-type with hollows” apparatus in the temperature range of 1500–1900 °C. The boron carbide ceramics prepared by this method showed a hardness of 37 GPa, which is very close to the hardness of mono-crystal boron carbide. The study showed that the boron carbide grains are uniformly sized without observed grain growth in the sintered materials. Obtained results revealed that high-pressure sintering can be a very effective low-temperature densification method for the obtainment of additive-free B4C ceramics. Moreover, the process can be scaled-up for the production of large-size composites required in various cutting tools and other extreme condition applications.",
journal = "Materials Letters",
title = "Densification of boron carbide under high pressure",
volume = "314",
pages = "131877",
doi = "10.1016/j.matlet.2022.131877"
}

Matović, B., Urbanovich, V., Girman, V., Lisnichuk, M., Nikolić, D., Erčić, J.,& Cvijović-Alagić, I.. (2022). Densification of boron carbide under high pressure. in Materials Letters, 314, 131877.
https://doi.org/10.1016/j.matlet.2022.131877

Matović B, Urbanovich V, Girman V, Lisnichuk M, Nikolić D, Erčić J, Cvijović-Alagić I. Densification of boron carbide under high pressure. in Materials Letters. 2022;314:131877.
doi:10.1016/j.matlet.2022.131877 .

Matović, Branko, Urbanovich, Vladimir, Girman, Vladimir, Lisnichuk, Maksym, Nikolić, Dobrica, Erčić, Jelena, Cvijović-Alagić, Ivana, "Densification of boron carbide under high pressure" in Materials Letters, 314 (2022):131877,
https://doi.org/10.1016/j.matlet.2022.131877 . .

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Prikhna, Tatiana
AU  - Urbanovich, Vladimir
AU  - Girman, Vladimir
AU  - Lisnichuk, Maksym
AU  - Todorović, Bratislav
AU  - Yoshida, Katsumi
AU  - Cvijović-Alagić, Ivana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9405
AB  - Additive-free boron carbide (B4C) – silicon carbide (SiC) ceramic composites with different B4C and β-SiC powders ratio were densified using the high-pressure “anvil-type with hollows” apparatus at 1500 °C under a pressure of 4 GPa for 60 s in air. The effect of starting powders ratio on the composites sintering behavior, relative density, microstructural development, and thermomechanical properties was studied. The sintered samples hardness was found to be in the range from 24 to 31 GPa. The thermal conductivity measurements, conducted in the temperature range from room temperature to 1000 °C, showed that the thermal diffusivity of sintered samples was between 6 and 9.5 mm2/s whereas the thermal conductivity was in the range from 16 to 28 W/(m K). The results of this study show that the high-pressure sintering can be a very effective low-temperature densification method for the obtainment of additive-free B4C - β-SiC ceramic composites. © 2021 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering
VL  - 41
IS  - 9
SP  - 4755
EP  - 4760
DO  - 10.1016/j.jeurceramsoc.2021.03.047
ER  - 

@article{
author = "Matović, Branko and Maletaškić, Jelena and Prikhna, Tatiana and Urbanovich, Vladimir and Girman, Vladimir and Lisnichuk, Maksym and Todorović, Bratislav and Yoshida, Katsumi and Cvijović-Alagić, Ivana",
year = "2021",
abstract = "Additive-free boron carbide (B4C) – silicon carbide (SiC) ceramic composites with different B4C and β-SiC powders ratio were densified using the high-pressure “anvil-type with hollows” apparatus at 1500 °C under a pressure of 4 GPa for 60 s in air. The effect of starting powders ratio on the composites sintering behavior, relative density, microstructural development, and thermomechanical properties was studied. The sintered samples hardness was found to be in the range from 24 to 31 GPa. The thermal conductivity measurements, conducted in the temperature range from room temperature to 1000 °C, showed that the thermal diffusivity of sintered samples was between 6 and 9.5 mm2/s whereas the thermal conductivity was in the range from 16 to 28 W/(m K). The results of this study show that the high-pressure sintering can be a very effective low-temperature densification method for the obtainment of additive-free B4C - β-SiC ceramic composites. © 2021 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering",
volume = "41",
number = "9",
pages = "4755-4760",
doi = "10.1016/j.jeurceramsoc.2021.03.047"
}

Matović, B., Maletaškić, J., Prikhna, T., Urbanovich, V., Girman, V., Lisnichuk, M., Todorović, B., Yoshida, K.,& Cvijović-Alagić, I.. (2021). Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering. in Journal of the European Ceramic Society, 41(9), 4755-4760.
https://doi.org/10.1016/j.jeurceramsoc.2021.03.047

Matović B, Maletaškić J, Prikhna T, Urbanovich V, Girman V, Lisnichuk M, Todorović B, Yoshida K, Cvijović-Alagić I. Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering. in Journal of the European Ceramic Society. 2021;41(9):4755-4760.
doi:10.1016/j.jeurceramsoc.2021.03.047 .

Matović, Branko, Maletaškić, Jelena, Prikhna, Tatiana, Urbanovich, Vladimir, Girman, Vladimir, Lisnichuk, Maksym, Todorović, Bratislav, Yoshida, Katsumi, Cvijović-Alagić, Ivana, "Characterization of B4C-SiC ceramic composites prepared by ultra-high pressure sintering" in Journal of the European Ceramic Society, 41, no. 9 (2021):4755-4760,
https://doi.org/10.1016/j.jeurceramsoc.2021.03.047 . .

TY  - JOUR
AU  - Nikolić, Violeta N.
AU  - Milić, Mirjana
AU  - Jovanović, Sonja
AU  - Girman, Vladimir
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10288
AB  - Monodisperse samples of magnetite nanoparticles in the size range of 5-13nm, were prepared by solvothermal synthesis and coprecipitation method. Obtained nanoparticles were characterized by different measurement techniques: X-ray diffraction analysis, transmission electron microscopy, selected area electron diffraction measurement, and Fourier transform infra-red spectroscopy. Measurements confirmed that the utilized synthesis methods are able to produce size and shape-controlled nanoparticles of a high-quality, that is of the technological importance. The results of the performed study represent the first stage in preparation of the Fe3O4 nanoparticles as an additive to concrete, which will be used for the construction of the special military facilities where it is necessary to provide a protection against γ-ray radiation.
T2  - Scientific Technical Review
T1  - Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization
VL  - 67
IS  - 2
SP  - 20
EP  - 26
DO  - 10.5937/str1702020N
ER  - 

@article{
author = "Nikolić, Violeta N. and Milić, Mirjana and Jovanović, Sonja and Girman, Vladimir",
year = "2017",
abstract = "Monodisperse samples of magnetite nanoparticles in the size range of 5-13nm, were prepared by solvothermal synthesis and coprecipitation method. Obtained nanoparticles were characterized by different measurement techniques: X-ray diffraction analysis, transmission electron microscopy, selected area electron diffraction measurement, and Fourier transform infra-red spectroscopy. Measurements confirmed that the utilized synthesis methods are able to produce size and shape-controlled nanoparticles of a high-quality, that is of the technological importance. The results of the performed study represent the first stage in preparation of the Fe3O4 nanoparticles as an additive to concrete, which will be used for the construction of the special military facilities where it is necessary to provide a protection against γ-ray radiation.",
journal = "Scientific Technical Review",
title = "Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization",
volume = "67",
number = "2",
pages = "20-26",
doi = "10.5937/str1702020N"
}

Nikolić, V. N., Milić, M., Jovanović, S.,& Girman, V.. (2017). Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization. in Scientific Technical Review, 67(2), 20-26.
https://doi.org/10.5937/str1702020N

Nikolić VN, Milić M, Jovanović S, Girman V. Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization. in Scientific Technical Review. 2017;67(2):20-26.
doi:10.5937/str1702020N .

Nikolić, Violeta N., Milić, Mirjana, Jovanović, Sonja, Girman, Vladimir, "Fe3O4 nanoparticles as additives for gamma-ray shielding: Structural and surface characterization" in Scientific Technical Review, 67, no. 2 (2017):20-26,
https://doi.org/10.5937/str1702020N . .

TY  - JOUR
AU  - Fabian, Martin
AU  - Antić, Bratislav
AU  - Girman, Vladimir
AU  - Vučinić-Vasić, Milica
AU  - Kremenović, Aleksandar S.
AU  - Suzuki, Shigeru
AU  - Hahn, Horst
AU  - Sepelak, Vladimir
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/718
AB  - A series of nanostructured fluorite-type Ce1-xYxO2-delta(0 LT = x LT = 0.35) solid solutions, prepared via high-energy milling of the CeO2/Y2O3 mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For the first time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1-xYxO2-delta, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria lattice as a consequence of yttrium incorporation. Raman spectra are directly affected by the presence of oxygen vacancies; their existence is evidenced by the presence of vibration modes at similar to 560 and similar to 600 cm(-1). The detailed spectroscopic investigations enable us to separate extrinsic and intrinsic origin of oxygen vacancies. It is demonstrated that mechanosynthesis can be successfully employed in the one-step preparation of nanocrystalline Ce1-xYxO2-delta solid solutions. (C) 2015 Elsevier Inc. All rights reserved.
T2  - Journal of Solid State Chemistry
T1  - Mechanosynthesis and structural characterization of nanocrystalline Ce1-xYxO2-delta(x=0.1-0.35) solid solutions
VL  - 230
SP  - 42
EP  - 48
DO  - 10.1016/j.jssc.2015.06.027
ER  - 

@article{
author = "Fabian, Martin and Antić, Bratislav and Girman, Vladimir and Vučinić-Vasić, Milica and Kremenović, Aleksandar S. and Suzuki, Shigeru and Hahn, Horst and Sepelak, Vladimir",
year = "2015",
abstract = "A series of nanostructured fluorite-type Ce1-xYxO2-delta(0 LT = x LT = 0.35) solid solutions, prepared via high-energy milling of the CeO2/Y2O3 mixtures, are investigated by XRD, HR-TEM, EDS and Raman spectroscopy. For the first time, complementary information on both the long-range and short-range structural features of mechanosynthesized Ce1-xYxO2-delta, obtained by Rietveld analysis of XRD data and Raman spectroscopy, is provided. The lattice parameters of the as-prepared solid solutions decrease with increasing yttrium content. Rietveld refinements of the XRD data reveal increase in microstrains in the host ceria lattice as a consequence of yttrium incorporation. Raman spectra are directly affected by the presence of oxygen vacancies; their existence is evidenced by the presence of vibration modes at similar to 560 and similar to 600 cm(-1). The detailed spectroscopic investigations enable us to separate extrinsic and intrinsic origin of oxygen vacancies. It is demonstrated that mechanosynthesis can be successfully employed in the one-step preparation of nanocrystalline Ce1-xYxO2-delta solid solutions. (C) 2015 Elsevier Inc. All rights reserved.",
journal = "Journal of Solid State Chemistry",
title = "Mechanosynthesis and structural characterization of nanocrystalline Ce1-xYxO2-delta(x=0.1-0.35) solid solutions",
volume = "230",
pages = "42-48",
doi = "10.1016/j.jssc.2015.06.027"
}

Fabian, M., Antić, B., Girman, V., Vučinić-Vasić, M., Kremenović, A. S., Suzuki, S., Hahn, H.,& Sepelak, V.. (2015). Mechanosynthesis and structural characterization of nanocrystalline Ce1-xYxO2-delta(x=0.1-0.35) solid solutions. in Journal of Solid State Chemistry, 230, 42-48.
https://doi.org/10.1016/j.jssc.2015.06.027

Fabian M, Antić B, Girman V, Vučinić-Vasić M, Kremenović AS, Suzuki S, Hahn H, Sepelak V. Mechanosynthesis and structural characterization of nanocrystalline Ce1-xYxO2-delta(x=0.1-0.35) solid solutions. in Journal of Solid State Chemistry. 2015;230:42-48.
doi:10.1016/j.jssc.2015.06.027 .

Fabian, Martin, Antić, Bratislav, Girman, Vladimir, Vučinić-Vasić, Milica, Kremenović, Aleksandar S., Suzuki, Shigeru, Hahn, Horst, Sepelak, Vladimir, "Mechanosynthesis and structural characterization of nanocrystalline Ce1-xYxO2-delta(x=0.1-0.35) solid solutions" in Journal of Solid State Chemistry, 230 (2015):42-48,
https://doi.org/10.1016/j.jssc.2015.06.027 . .