Mechanical properties and microstructure of TiB_2 ceramic influenced by ZrB_2 additive  

作　　者：王皓 傅正义 辜萍 王为民 袁润章 

出　　处：《中国有色金属学会会刊：英文版》2002年第5期909-913,共5页Transactions of Nonferrous Metals Society of China

基　　金：Project ( 5 980 2 0 0 8)supportedbytheNationalNaturalScienceFoundationofChinaandproject ( 2 0 0 0J0 31)supportedbytheNaturalScienceFoundationofHubeiProvinc

摘　　要：Since some transition metal diborides have the same crystal structure with TiB 2, which can react with TiB 2 to form solid solution by adequate technique. With ZrB 2 used as additive, the TiB 2-ZrB 2 solid solution was prepared by hot pressing. The effects of additive content on mechanical properties of composite were investigated. The microstructure analyzing were employed by EPMA, SEM and TEM. It is shown that TiB 2 can partly form solid solution with ZrB 2 and redound to gain uniform grains, which results in the increase of mechanical properties.Since some transition metal diborides have the same crystal structure with TiB 2, which can react with TiB 2 to form solid solution by adequate technique. With ZrB 2 used as additive, the TiB 2-ZrB 2 solid solution was prepared by hot pressing. The effects of additive content on mechanical properties of composite were investigated. The microstructure analyzing were employed by EPMA, SEM and TEM. It is shown that TiB 2 can partly form solid solution with ZrB 2 and redound to gain uniform grains, which results in the increase of mechanical properties.

关 键 词：TiB2-ZrB2 二硼化钛陶瓷 固溶体 机械性能 显微结构 

分 类 号：TQ174[化学工程—陶瓷工业]