TY - JOUR
T1 - Analysis of the high-temperature flexural strength behavior of B4C–TaB2 eutectic composites produced by in situ spark plasma sintering
AU - Demirskyi, Dmytro
AU - Vasylkiv, Oleg
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017/6/14
Y1 - 2017/6/14
N2 - In this study, flexural strength measurements and microstructural studies have been combined to evaluate the effect of elevated temperatures on the fracture behavior of B4C–TaB2 ceramic composites that have a eutectic structure. Mechanical characterization was carried out at 1600 °C, 1800 °C and 2000 °C. The B4C–TaB2 eutectic composites were prepared in situ using a spark plasma sintering technique. The eutectic composites exhibited strengths of 483±17 MPa and 525±12 MPa at 1600 °C and 1800 °C, respectively, which is higher than the strength of 430±25 MPa measured at room temperature. The flexural strength of the B4C–TaB2 eutectic composites was 511±16 MPa at 2000 °C (i.e. 0.86 of the melting point of the B4C–TaB2 eutectic), indicating plastic behavior. Analyses of the high-temperature flexural strength behavior of this non-oxide eutectic are reported.
AB - In this study, flexural strength measurements and microstructural studies have been combined to evaluate the effect of elevated temperatures on the fracture behavior of B4C–TaB2 ceramic composites that have a eutectic structure. Mechanical characterization was carried out at 1600 °C, 1800 °C and 2000 °C. The B4C–TaB2 eutectic composites were prepared in situ using a spark plasma sintering technique. The eutectic composites exhibited strengths of 483±17 MPa and 525±12 MPa at 1600 °C and 1800 °C, respectively, which is higher than the strength of 430±25 MPa measured at room temperature. The flexural strength of the B4C–TaB2 eutectic composites was 511±16 MPa at 2000 °C (i.e. 0.86 of the melting point of the B4C–TaB2 eutectic), indicating plastic behavior. Analyses of the high-temperature flexural strength behavior of this non-oxide eutectic are reported.
KW - Boron carbide
KW - Eutectic composite
KW - High-temperature strength
KW - Spark plasma sintering
KW - Tantalum diboride
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U2 - 10.1016/j.msea.2017.04.093
DO - 10.1016/j.msea.2017.04.093
M3 - Article
AN - SCOPUS:85018782898
VL - 697
SP - 71
EP - 78
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
ER -