Microstructure and Mechanical Properties of Si_3N_4 Composites Containing SiC Platelet

作     者：Tao WEI Yu ZHOU Tingquan LEI and Yujin WANG (School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) 

作者机构：School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1998年第14卷第2期

页      面：151-155页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 070301[理学-无机化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：SiC Microstructure and Mechanical Properties of Si3N4 Composites Containing SiC Platelet MPa 

摘      要：Hoppressed Si3N4/SiC platelet composites had been investigated with respect to their microstructure and mechanical properties. The results indicate that Vickers hardness, elastic modulus and fracture toughness of the composites were increased by the addition of SiC platelet until the content up to 20 vol pct. A slight decrease in flexural Strength was measured at room temperature with increasing SiC platelet content. The high temperature flexural strength tests at 1150, 1250, and 1350℃ were conducted. It was found that the flexural strength at elevated temperature was degraded with the rising temperature, and the downward trend of flexural strength for the composite containing 10 vol. pct SiC platelet was less. The results indicate that SiC platelet had a positive influence on the high temperature strength. Effects of SiC platelet reinforcement were presented