Bučevac, Dušan

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orcid::0000-0002-2731-6182
  • Bučevac, Dušan (7)
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Author's Bibliography

Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting

Omerašević, Mia; Krsmanović, Miomir; Radovanović, Željko; Bučevac, Dušan

(Elsevier Ltd., 2024)

TY  - JOUR
AU  - Omerašević, Mia
AU  - Krsmanović, Miomir
AU  - Radovanović, Željko
AU  - Bučevac, Dušan
PY  - 2024
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6991
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.
PB  - Elsevier Ltd.
T2  - Ceramics International
T1  - Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting
EP  - 5795
IS  - 3
SP  - 5787
VL  - 50
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.",
publisher = "Elsevier Ltd.",
journal = "Ceramics International",
title = "Mechanical properties and thermal shock resistance of anorthite ceramics obtained by slip casting",
pages = "5795-5787",
number = "3",
volume = "50",
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
Elsevier Ltd.., 50(3), 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):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 (2024):5787-5795,
https://doi.org/10.1016/j.ceramint.2023.11.381 . .
1

Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite

Bučevac, Dušan; Omerasević, Mia; Egelja, Adela; Radovanović, Željko; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Krstić, Vladimir

(Elsevier Sci Ltd, Oxford, 2020)

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Omerasević, Mia
AU  - Egelja, Adela
AU  - Radovanović, Željko
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Krstić, Vladimir
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4525
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.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite
EP  - 16007
IS  - 10
SP  - 15998
VL  - 46
DO  - 10.1016/j.ceramint.2020.03.150
ER  - 
@article{
author = "Bučevac, Dušan and Omerasević, 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.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite",
pages = "16007-15998",
number = "10",
volume = "46",
doi = "10.1016/j.ceramint.2020.03.150"
}
Bučevac, D., Omerasević, 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
Elsevier Sci Ltd, Oxford., 46(10), 15998-16007.
https://doi.org/10.1016/j.ceramint.2020.03.150
Bučevac D, Omerasević 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, Omerasević, 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 . .
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The Effect of the Concentration of Alkaline Activator and Aging Time on the Structure of Metakaolin Based Geopolymer

Ivanović, Marija; Kljajević, Ljiljana M.; Gulicovski, Jelena; Petković, Marijana; Janković-Častvan, Ivona; Bučevac, Dušan; Nenadović, Snežana S.

(Međunarodni Institut za nauku o sinterovanju, Beograd, 2020)

TY  - JOUR
AU  - Ivanović, Marija
AU  - Kljajević, Ljiljana M.
AU  - Gulicovski, Jelena
AU  - Petković, Marijana
AU  - Janković-Častvan, Ivona
AU  - Bučevac, Dušan
AU  - Nenadović, Snežana S.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4363
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.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - The Effect of the Concentration of Alkaline Activator and Aging Time on the Structure of Metakaolin Based Geopolymer
EP  - 229
IS  - 2
SP  - 219
VL  - 52
DO  - 10.2298/SOS2002219I
ER  - 
@article{
author = "Ivanović, Marija and Kljajević, Ljiljana M. and Gulicovski, Jelena 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.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "The Effect of the Concentration of Alkaline Activator and Aging Time on the Structure of Metakaolin Based Geopolymer",
pages = "229-219",
number = "2",
volume = "52",
doi = "10.2298/SOS2002219I"
}
Ivanović, M., Kljajević, L. M., Gulicovski, 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
Međunarodni Institut za nauku o sinterovanju, Beograd., 52(2), 219-229.
https://doi.org/10.2298/SOS2002219I
Ivanović M, Kljajević LM, Gulicovski J, 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, Kljajević, Ljiljana M., Gulicovski, Jelena, 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 . .
19
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22

Monolithic nanocrystalline SiC ceramics

Matović, Branko; Bučevac, Dušan; Urbanović, Vladimir; Stanković, Nadežda; Daneu, Nina; Volkov-Husović, Tatjana; Babić, Biljana M.

(Elsevier Sci Ltd, Oxford, 2016)

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  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3432
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 Young's 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.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of the European Ceramic Society
T1  - Monolithic nanocrystalline SiC ceramics
EP  - 3010
IS  - 12
SP  - 3005
VL  - 36
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 Young's 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.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of the European Ceramic Society",
title = "Monolithic nanocrystalline SiC ceramics",
pages = "3010-3005",
number = "12",
volume = "36",
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
Elsevier Sci Ltd, Oxford., 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 . .
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17

Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide

Bučevac, Dušan; Dapčević, Aleksandra; Maksimović, Vesna

(Pergamon-Elsevier Science Ltd, Oxford, 2014)

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Dapčević, Aleksandra
AU  - Maksimović, Vesna
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2765
AB  - Porous acicular mullite was fabricated by using waste MoSi2 heating element and Al2O3. Careful calcination of the pulverized heating element led to the formation of a mixture of MoO3 and amorphous SiO2. This mixture was employed as both SiO2 precursor and pore former. The oxidation of MoSi2 and mullite formation were studied. The effect of fabrication temperature on phase composition, porosity, grain morphology, and compressive strength of sintered mullite was examined. Pure mullite with porosity of more than 60% and compressive strength of similar to 20 MPa was obtained at temperature as low as 1300 degrees C. The microstructure consisted of elongated, rectangular, prism-like grains which are known to be effective in filtration of diesel engine exhaust. The increase in sintering temperature caused the change of grain morphology and reduction in compressive strength.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Materials Research Bulletin
T1  - Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide
EP  - 160
SP  - 155
VL  - 50
DO  - 10.1016/j.materresbull.2013.10.044
ER  - 
@article{
author = "Bučevac, Dušan and Dapčević, Aleksandra and Maksimović, Vesna",
year = "2014",
abstract = "Porous acicular mullite was fabricated by using waste MoSi2 heating element and Al2O3. Careful calcination of the pulverized heating element led to the formation of a mixture of MoO3 and amorphous SiO2. This mixture was employed as both SiO2 precursor and pore former. The oxidation of MoSi2 and mullite formation were studied. The effect of fabrication temperature on phase composition, porosity, grain morphology, and compressive strength of sintered mullite was examined. Pure mullite with porosity of more than 60% and compressive strength of similar to 20 MPa was obtained at temperature as low as 1300 degrees C. The microstructure consisted of elongated, rectangular, prism-like grains which are known to be effective in filtration of diesel engine exhaust. The increase in sintering temperature caused the change of grain morphology and reduction in compressive strength.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Materials Research Bulletin",
title = "Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide",
pages = "160-155",
volume = "50",
doi = "10.1016/j.materresbull.2013.10.044"
}
Bučevac, D., Dapčević, A.,& Maksimović, V.. (2014). Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide. in Materials Research Bulletin
Pergamon-Elsevier Science Ltd, Oxford., 50, 155-160.
https://doi.org/10.1016/j.materresbull.2013.10.044
Bučevac D, Dapčević A, Maksimović V. Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide. in Materials Research Bulletin. 2014;50:155-160.
doi:10.1016/j.materresbull.2013.10.044 .
Bučevac, Dušan, Dapčević, Aleksandra, Maksimović, Vesna, "Porous acicular mullite obtained by controlled oxidation of waste molybdenum disilicide" in Materials Research Bulletin, 50 (2014):155-160,
https://doi.org/10.1016/j.materresbull.2013.10.044 . .
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11

Oxidation and erosion behaviour of SiC-HfC multilayered composite

Matović, Branko; Maksimović, Vesna; Bučevac, Dušan; Pantić, Jelena R.; Luković, Jelena M.; Volkov-Husović, Tatjana; Gautam, Devendraprakash

(Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad, 2014)

TY  - JOUR
AU  - Matović, Branko
AU  - Maksimović, Vesna
AU  - Bučevac, Dušan
AU  - Pantić, Jelena R.
AU  - Luković, Jelena M.
AU  - Volkov-Husović, Tatjana
AU  - Gautam, Devendraprakash
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2630
AB  - The fabrication of SiC-HfC ceramic composite via self-propagating high-temperature synthesis and simultaneous consolidation was investigated. Dense composite consisting of alternating layers of SiC and HfC was obtained by spark plasma sintering of stack of SiC cloths covered by electrophoretically deposited HfO2. The deposited HfO2 was converted into HfC during sintering. The obtained ceramics was characterized in terms of microstructure, cavitation resistance and oxidation resistance. It was shown that spark plasma sintering is effective way to preserve fibre-like mikrostructure of SiC. The obtained material showed good erosion resistance. The surface layer of HfC transformed to HfO2 during oxidation of samples and protected SiC from further oxidation.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Oxidation and erosion behaviour of SiC-HfC multilayered composite
EP  - 38
IS  - 1
SP  - 31
VL  - 8
DO  - 10.2298/PAC1401031M
ER  - 
@article{
author = "Matović, Branko and Maksimović, Vesna and Bučevac, Dušan and Pantić, Jelena R. and Luković, Jelena M. and Volkov-Husović, Tatjana and Gautam, Devendraprakash",
year = "2014",
abstract = "The fabrication of SiC-HfC ceramic composite via self-propagating high-temperature synthesis and simultaneous consolidation was investigated. Dense composite consisting of alternating layers of SiC and HfC was obtained by spark plasma sintering of stack of SiC cloths covered by electrophoretically deposited HfO2. The deposited HfO2 was converted into HfC during sintering. The obtained ceramics was characterized in terms of microstructure, cavitation resistance and oxidation resistance. It was shown that spark plasma sintering is effective way to preserve fibre-like mikrostructure of SiC. The obtained material showed good erosion resistance. The surface layer of HfC transformed to HfO2 during oxidation of samples and protected SiC from further oxidation.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Oxidation and erosion behaviour of SiC-HfC multilayered composite",
pages = "38-31",
number = "1",
volume = "8",
doi = "10.2298/PAC1401031M"
}
Matović, B., Maksimović, V., Bučevac, D., Pantić, J. R., Luković, J. M., Volkov-Husović, T.,& Gautam, D.. (2014). Oxidation and erosion behaviour of SiC-HfC multilayered composite. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 8(1), 31-38.
https://doi.org/10.2298/PAC1401031M
Matović B, Maksimović V, Bučevac D, Pantić JR, Luković JM, Volkov-Husović T, Gautam D. Oxidation and erosion behaviour of SiC-HfC multilayered composite. in Processing and Application of Ceramics. 2014;8(1):31-38.
doi:10.2298/PAC1401031M .
Matović, Branko, Maksimović, Vesna, Bučevac, Dušan, Pantić, Jelena R., Luković, Jelena M., Volkov-Husović, Tatjana, Gautam, Devendraprakash, "Oxidation and erosion behaviour of SiC-HfC multilayered composite" in Processing and Application of Ceramics, 8, no. 1 (2014):31-38,
https://doi.org/10.2298/PAC1401031M . .
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5

Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method

Jokić, Bojan; Janković-Častvan, Ivona; Veljović, Đorđe; Bučevac, Dušan; Obradović-Đuričić, Kosovka; Petrović, Rada; Janaćković, Đorđe

(Natl Inst Optoelectronics, Bucharest-Magurele, 2007)

TY  - JOUR
AU  - Jokić, Bojan
AU  - Janković-Častvan, Ivona
AU  - Veljović, Đorđe
AU  - Bučevac, Dušan
AU  - Obradović-Đuričić, Kosovka
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1030
AB  - The aim of this work is the investigation of alpha-tricalcium-phosphate (alpha-TCP) formation from calcium-deficient hydroxyapatite (CDHAP), synthesized by hydrothermal method from CaCl2, EDTA, NaH2PO4 center dot 2H(2)O and urea as precursors at 160 degrees C. Further, the influence of Ca/P ratios in the starting solution on alpha-TCP formation and the settings of obtained cements in simulated body fluid (SBF) were investigated. According to the results of X-ray, FTIR and SEM analyses, it is shown that CDHAP is transformed to beta-TCP at 800 degrees C, and to alpha-TCP at 1200 degrees C. Almost complete transformation of CDHAP into alpha-TCP occur after heating at 1500 degrees C in the case when Ca/P ratio in starting solution was 1,42. Cement powder mixed with the cement liquid (2.5 wt.% solution of Na2HPO4) completely hydrolyzes after 7 days in SBF, forming only CDHAP phase.
PB  - Natl Inst Optoelectronics, Bucharest-Magurele
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method
EP  - 1910
IS  - 6
SP  - 1904
VL  - 9
UR  - https://hdl.handle.net/21.15107/rcub_vinar_2574
ER  - 
@article{
author = "Jokić, Bojan and Janković-Častvan, Ivona and Veljović, Đorđe and Bučevac, Dušan and Obradović-Đuričić, Kosovka and Petrović, Rada and Janaćković, Đorđe",
year = "2007",
abstract = "The aim of this work is the investigation of alpha-tricalcium-phosphate (alpha-TCP) formation from calcium-deficient hydroxyapatite (CDHAP), synthesized by hydrothermal method from CaCl2, EDTA, NaH2PO4 center dot 2H(2)O and urea as precursors at 160 degrees C. Further, the influence of Ca/P ratios in the starting solution on alpha-TCP formation and the settings of obtained cements in simulated body fluid (SBF) were investigated. According to the results of X-ray, FTIR and SEM analyses, it is shown that CDHAP is transformed to beta-TCP at 800 degrees C, and to alpha-TCP at 1200 degrees C. Almost complete transformation of CDHAP into alpha-TCP occur after heating at 1500 degrees C in the case when Ca/P ratio in starting solution was 1,42. Cement powder mixed with the cement liquid (2.5 wt.% solution of Na2HPO4) completely hydrolyzes after 7 days in SBF, forming only CDHAP phase.",
publisher = "Natl Inst Optoelectronics, Bucharest-Magurele",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method",
pages = "1910-1904",
number = "6",
volume = "9",
url = "https://hdl.handle.net/21.15107/rcub_vinar_2574"
}
Jokić, B., Janković-Častvan, I., Veljović, Đ., Bučevac, D., Obradović-Đuričić, K., Petrović, R.,& Janaćković, Đ.. (2007). Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method. in Journal of Optoelectronics and Advanced Materials
Natl Inst Optoelectronics, Bucharest-Magurele., 9(6), 1904-1910.
https://hdl.handle.net/21.15107/rcub_vinar_2574
Jokić B, Janković-Častvan I, Veljović Đ, Bučevac D, Obradović-Đuričić K, Petrović R, Janaćković Đ. Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method. in Journal of Optoelectronics and Advanced Materials. 2007;9(6):1904-1910.
https://hdl.handle.net/21.15107/rcub_vinar_2574 .
Jokić, Bojan, Janković-Častvan, Ivona, Veljović, Đorđe, Bučevac, Dušan, Obradović-Đuričić, Kosovka, Petrović, Rada, Janaćković, Đorđe, "Synthesis and settings behavior of alpha-TCP from calcium deficient hyroxyapatite obtained by hydrothermal method" in Journal of Optoelectronics and Advanced Materials, 9, no. 6 (2007):1904-1910,
https://hdl.handle.net/21.15107/rcub_vinar_2574 .
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