Microstructures and Mechanical Properties of SiC-TiB2 Composite Prepared by Pressureless Sintering
Microstructures and Mechanical Properties of SiC-TiB2 Composite Prepared by Pressureless Sintering
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DOI：
10.4028/www.scientific.net/kem.512-515.812
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发表时间：
2012-06
期刊：
影响因子：
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通讯作者：
X. Yue;Jian Jun Wang;Qi Sun;H. Ru
中科院分区：
文献类型：
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作者：
X. Yue;Jian Jun Wang;Qi Sun;H. Ru
采用无压烧结法在2298 K下制备了SiC-TiB2复合材料。研究了SiC-TiB2复合材料的显微组织和力学性能。当B4C-C含量为5%（质量分数）时，SiC-TiB2复合材料的综合性能最佳。其体积密度、硬度、弯曲强度和断裂韧性分别为3.43 g/cm3、18.5 GPa、353 MPa和4.67 MPa·m1/2。过量的B_4C-C含量会降低复合材料的力学性能。
SiC-TiB2 composite was prepared at 2298 K by using pressureless sintering. The microstructures and mechanical properties of the SiC-TiB2 composite were investigated. The SiC-TiB2 composite with 5 mass % B4C-C showed the optimized comprehensive properties. The volume density, hardness, flexural strength and fracture toughness of that were 3.43 g/cm3, 18.5 GPa, 353 MPa and 4.67 MPa•m1/2, respectively. The excessive B4C-C content might decrease the mechanical properties of the composite.