TY  - JOUR
AU  - Bučevac, Dušan
AU  - Krstic, Vladimir
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4761
AB  - Densification and mechanical properties (fracture toughness, flexural strength and hardness) of SiC-TiB2 composite were studied. Pressureless sintering experiments were carried out on samples containing 0-50 vol% of TiB2 created by in situ reaction between TiO2, B4C and carbon. Al2O3 and Y2O3 were used as sintering additives to create liquid phase and promote densification at sintering temperature of 1940 degrees C. The sintered samples were subsequently heat treated at 1970 degrees C. It was found that the presence of TiB2 serves as an effective obstacle to SiC grain growth as well as crack propagation thus increasing both strength and fracture toughness of sintered SiC-TiB2 composite. The subsequent heat treatment of sintered samples promoted the elongation of SIC matrix and further improved mechanical properties of the composite. The best mechanical properties were measured in heat-treated samples containing 12-24 vol% TiB2. The maximum flexural strength of similar to 600 MPa was obtained in samples with 12 vol%TiB2 whereas the maximum fracture toughness of 6.6 MPa m(1/2) was obtained in samples with 24 vol% TiB2. Typical microstructures of samples with the mentioned volume fractions of TiB2 consist of TiB2 particles ( LT 5 mu m) uniformly dispersed in a matrix of elongated SiC plates. (C) 2012 Elsevier B.V. All rights reserved.
T2  - Materials Chemistry and Physics
T1  - Microstructure-mechanical properties relations in SiC-TiB2 composite
VL  - 133
IS  - 1
SP  - 197
EP  - 204
DO  - 10.1016/j.matchemphys.2012.01.007
ER  - 

@article{
author = "Bučevac, Dušan and Krstic, Vladimir",
year = "2012",
abstract = "Densification and mechanical properties (fracture toughness, flexural strength and hardness) of SiC-TiB2 composite were studied. Pressureless sintering experiments were carried out on samples containing 0-50 vol% of TiB2 created by in situ reaction between TiO2, B4C and carbon. Al2O3 and Y2O3 were used as sintering additives to create liquid phase and promote densification at sintering temperature of 1940 degrees C. The sintered samples were subsequently heat treated at 1970 degrees C. It was found that the presence of TiB2 serves as an effective obstacle to SiC grain growth as well as crack propagation thus increasing both strength and fracture toughness of sintered SiC-TiB2 composite. The subsequent heat treatment of sintered samples promoted the elongation of SIC matrix and further improved mechanical properties of the composite. The best mechanical properties were measured in heat-treated samples containing 12-24 vol% TiB2. The maximum flexural strength of similar to 600 MPa was obtained in samples with 12 vol%TiB2 whereas the maximum fracture toughness of 6.6 MPa m(1/2) was obtained in samples with 24 vol% TiB2. Typical microstructures of samples with the mentioned volume fractions of TiB2 consist of TiB2 particles ( LT 5 mu m) uniformly dispersed in a matrix of elongated SiC plates. (C) 2012 Elsevier B.V. All rights reserved.",
journal = "Materials Chemistry and Physics",
title = "Microstructure-mechanical properties relations in SiC-TiB2 composite",
volume = "133",
number = "1",
pages = "197-204",
doi = "10.1016/j.matchemphys.2012.01.007"
}

Bučevac, D.,& Krstic, V.. (2012). Microstructure-mechanical properties relations in SiC-TiB2 composite. in Materials Chemistry and Physics, 133(1), 197-204.
https://doi.org/10.1016/j.matchemphys.2012.01.007

Bučevac D, Krstic V. Microstructure-mechanical properties relations in SiC-TiB2 composite. in Materials Chemistry and Physics. 2012;133(1):197-204.
doi:10.1016/j.matchemphys.2012.01.007 .

Bučevac, Dušan, Krstic, Vladimir, "Microstructure-mechanical properties relations in SiC-TiB2 composite" in Materials Chemistry and Physics, 133, no. 1 (2012):197-204,
https://doi.org/10.1016/j.matchemphys.2012.01.007 . .