TY  - JOUR
AU  - Bučevac, Dušan
AU  - Matović, Branko
AU  - Babić, Biljana M.
AU  - Krstic, Vladimir
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4215
AB  - Dense SiC-TiB2 composites with 24 vol% TiB2 were fabricated by pressureless sintering at 1940 degrees C. Al2O3 and Y2O3 were used as sintering additives to create a liquid phase and promote densification. TiB2 was formed by an in situ reaction between TiO2, B4C and C. The sintered samples were subsequently heat-treated at temperatures ranging from 1850 degrees C to 2000 degrees C. The effect of temperature of post-sintering heat treatment on microstructure and mechanical properties of the SiC-TiB2 composite was presented. Heat treatment at 1970 degrees C considerably improved the strength and the fracture toughness of sintered samples while maintaining high density. The elongation of alpha-SiC grains during the heat treatment was found to be responsible for an increase in fracture toughness. The presence of liquid phase assisted the elongation of grains which, in turn, activated crack bridging and crack deflection toughening mechanisms. Maximum strength of 540 MPa was found to be the result of improved fracture toughness. Heat treatment at temperatures above 1970 degrees C led to a deterioration of mechanical properties. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing
T1  - Effect of post-sintering heat treatment on mechanical properties and microstructure of SiC-TiB2 composites
VL  - 528
IS  - 4-5
SP  - 2034
EP  - 2041
DO  - 10.1016/j.msea.2010.11.022
ER  - 

@article{
author = "Bučevac, Dušan and Matović, Branko and Babić, Biljana M. and Krstic, Vladimir",
year = "2011",
abstract = "Dense SiC-TiB2 composites with 24 vol% TiB2 were fabricated by pressureless sintering at 1940 degrees C. Al2O3 and Y2O3 were used as sintering additives to create a liquid phase and promote densification. TiB2 was formed by an in situ reaction between TiO2, B4C and C. The sintered samples were subsequently heat-treated at temperatures ranging from 1850 degrees C to 2000 degrees C. The effect of temperature of post-sintering heat treatment on microstructure and mechanical properties of the SiC-TiB2 composite was presented. Heat treatment at 1970 degrees C considerably improved the strength and the fracture toughness of sintered samples while maintaining high density. The elongation of alpha-SiC grains during the heat treatment was found to be responsible for an increase in fracture toughness. The presence of liquid phase assisted the elongation of grains which, in turn, activated crack bridging and crack deflection toughening mechanisms. Maximum strength of 540 MPa was found to be the result of improved fracture toughness. Heat treatment at temperatures above 1970 degrees C led to a deterioration of mechanical properties. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing",
title = "Effect of post-sintering heat treatment on mechanical properties and microstructure of SiC-TiB2 composites",
volume = "528",
number = "4-5",
pages = "2034-2041",
doi = "10.1016/j.msea.2010.11.022"
}

Bučevac, D., Matović, B., Babić, B. M.,& Krstic, V.. (2011). Effect of post-sintering heat treatment on mechanical properties and microstructure of SiC-TiB2 composites. in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 528(4-5), 2034-2041.
https://doi.org/10.1016/j.msea.2010.11.022

Bučevac D, Matović B, Babić BM, Krstic V. Effect of post-sintering heat treatment on mechanical properties and microstructure of SiC-TiB2 composites. in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing. 2011;528(4-5):2034-2041.
doi:10.1016/j.msea.2010.11.022 .

Bučevac, Dušan, Matović, Branko, Babić, Biljana M., Krstic, Vladimir, "Effect of post-sintering heat treatment on mechanical properties and microstructure of SiC-TiB2 composites" in Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing, 528, no. 4-5 (2011):2034-2041,
https://doi.org/10.1016/j.msea.2010.11.022 . .

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Matović, Branko
AU  - Bošković, Snežana B.
AU  - Zec, Slavica
AU  - Krstic, Vladimir
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4172
AB  - SiC-TiB2 particulate composites were fabricated by converting TiO2 to TiB2 through the reaction between TiO2, B4C and C. The presence of initially very fine, in-situ created, TiB2 particles increased driving force for sintering and enabled fabrication of a dense composite utilizing pressureless sintering and the liquid phase created between Al2O3 and Y2O3 additives. The effect of volume fraction of the in-situ formed TiB2 on density, microstructure and flexural strength was discussed. It was found that the presence of TiB2 particles suppressed the growth of SiC grains and enhanced fracture strength. The fracture strength of samples containing 12 vol% TiB2 was more than 30% higher than that of the monolithic SIC. The effect of SIC grain size on fracture strength was also analyzed. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Journal of Alloys and Compounds
T1  - Pressureless sintering of internally synthesized SiC-TiB2 composites with improved fracture strength
VL  - 509
IS  - 3
SP  - 990
EP  - 996
DO  - 10.1016/j.jallcom.2010.09.152
ER  - 

@article{
author = "Bučevac, Dušan and Matović, Branko and Bošković, Snežana B. and Zec, Slavica and Krstic, Vladimir",
year = "2011",
abstract = "SiC-TiB2 particulate composites were fabricated by converting TiO2 to TiB2 through the reaction between TiO2, B4C and C. The presence of initially very fine, in-situ created, TiB2 particles increased driving force for sintering and enabled fabrication of a dense composite utilizing pressureless sintering and the liquid phase created between Al2O3 and Y2O3 additives. The effect of volume fraction of the in-situ formed TiB2 on density, microstructure and flexural strength was discussed. It was found that the presence of TiB2 particles suppressed the growth of SiC grains and enhanced fracture strength. The fracture strength of samples containing 12 vol% TiB2 was more than 30% higher than that of the monolithic SIC. The effect of SIC grain size on fracture strength was also analyzed. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Journal of Alloys and Compounds",
title = "Pressureless sintering of internally synthesized SiC-TiB2 composites with improved fracture strength",
volume = "509",
number = "3",
pages = "990-996",
doi = "10.1016/j.jallcom.2010.09.152"
}

Bučevac, D., Matović, B., Bošković, S. B., Zec, S.,& Krstic, V.. (2011). Pressureless sintering of internally synthesized SiC-TiB2 composites with improved fracture strength. in Journal of Alloys and Compounds, 509(3), 990-996.
https://doi.org/10.1016/j.jallcom.2010.09.152

Bučevac D, Matović B, Bošković SB, Zec S, Krstic V. Pressureless sintering of internally synthesized SiC-TiB2 composites with improved fracture strength. in Journal of Alloys and Compounds. 2011;509(3):990-996.
doi:10.1016/j.jallcom.2010.09.152 .

Bučevac, Dušan, Matović, Branko, Bošković, Snežana B., Zec, Slavica, Krstic, Vladimir, "Pressureless sintering of internally synthesized SiC-TiB2 composites with improved fracture strength" in Journal of Alloys and Compounds, 509, no. 3 (2011):990-996,
https://doi.org/10.1016/j.jallcom.2010.09.152 . .