中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
Vol. 12 No. 5 October 2002 |
microstructure ofTiB2
ceramic influenced by ZrB2 additive
(State Key Laboratory of Advanced Technology for
Materials Synthesis and Processing,
Wuhan University of Technology, Wuhan 430070, China)
Abstract:Since some transition metal diborides have the same crystal structure with TiB2, which can react with TiB2 to form solid solution by adequate technique. With ZrB2 used as additive, the TiB2-ZrB2 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 TiB2 can partly form solid solution with ZrB2 and redound to gain uniform grains, which results in the increase of mechanical properties.
Key words: solid solution; TiB2- ZrB2; mechanical properties; microstructure