Microstructure and mechanism of damage tolerance for Ti3SiC2 bulk ceramics

被引：110

作者：

Zhou, YC ^{[1
]}

Sun, ZM ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Ceram & Composite Dept, Shenyang 110015, Peoples R China

来源：

MATERIALS RESEARCH INNOVATIONS | 1999年 / 2卷 / 06期

关键词：

Ti3SiC2; microstructure; damage mechanism; crystallite shape;

D O I：

10.1007/s100190050114

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Titanium silicon carbide (Ti3SiC2) is a damage tolerance material that is expected to be used in a number of high temperature applications. In this work, the microstructure and damage tolerance mechanism of Ti3SiC2 was investigated. The result demonstrated that the Ti3SiC2 ceramics prepared by the in-situ hot pressing/solid-liquid reaction process had a dual microstructure, i.e., large laminated grains were distributed within small equiaxial grains. This microstructure is analogous to that of platelets reinforced ceramic matrix composites. The bending test using single-edge-notched-beam specimens revealed that Ti3SiC2 was a damage tolerance material. The damage tolerance mechanisms for Ti3SiC2 are basal plane slip, grain buckling, crack deflection, crack branching, pull-out and delamination of the laminated grains.

引用

页码：360 / 363

页数：4

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