%0 Journal Article
%T Characterization of Microstructure and Mechanical Properties of In-situ Toughened Si3N4<br>自增韧氮化硅陶瓷显微结构与力学性能的表征
%A ZENG Qing-Feng
%A XU Yong-Dong
%A ZHANG Li-Tong
%A CHENG Lai-Fei
%A LU Jie
%A <br>曾庆丰
%A 徐永东
%A 张立同
%A 成来飞
%A 吕杰
%J 无机材料学报
%D 2002
%I Science Press
%X The microstructure and mechanical properties of in-situ toughened Si3N4 were studied by principal components analysis. The microstructure can be characterized by the first principal component of its characterization variables, which intitules complex microstructure index. Com- pact matrix with fine grains and uniform large grains with great aspect ration must be ensured in order to get in-situ toughened Si3N4 with excellent microstructure. It has been approved that materials with similar complex microstructure index possessing similar mechanical properties. The mechanical properties can be characterized by the first and the second principal components of its characterization variables, which intitule mechanical properties stability index and average me- chanical properties index. The former one reflects fracture toughness and Weibull modulus which are affected by the fluctuation of microstructure; the later one reflects the average mechanical property, namely strength.
%K in-situ toughened Si3N4 microstructure
%K characterization
%K mechanical property<br>自增韧氮化硅
%K 显微结构
%K 力学性能
%K 表征
%K 陶瓷材料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=3058E85886969D0A&yid=C3ACC247184A22C1&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=03F1579EF92A5A32&eid=4DB1E72614E68564&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=2&reference_num=9