Mechanical properties and oxidation resistance of ZrB2-SiC-MoSi2 ceramic prepared by spark plasma sintering

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Li, Qi^1 ; Cao, Lamei^1

Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing

100095, China^1

关键词: Bonding forces;    Comprehensive performance;    High relative densities;    Mass gain;    SiC-MoSi2 ceramics;    Spark plasma sintering method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/3/032012/pdf
DOI  :  10.1088/1757-899X/322/3/032012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

ZrB2-30vol.%SiC-10vol.%MoSi2ceramic with high relative density were fabricated by spark plasma sintering method (SPS). The comprehensive performances, including microstructure, mechanical properties, oxidation resistance, were evaluated. MoB phase was formed during sintering, therefore, the interphase bonding forces among different phases were significantly enhanced. The fracture toughness, hardness and bending strength were 5.73 MPa•m1/2, 16.1 GPa and 428 MPa, respectively. By oxidation at 1500°C for 10 h, the mass gain was about 14.42 mg/cm2, the oxidation depth was about 298 μm.