Microstructure and mechanical properties of hot-pressed SiC/(W, Ti)C ceramic composites

被引：10
作者：
Deng Jianxin [1 ]
Zhao Jinlong [1 ]
Li Yousheng [1 ]
Song Wenlong [1 ]
机构：
[1] Shandong Univ, Dept Mech Engn, Jinan 250061, Shandong, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2008年 / 34卷 / 06期
基金：
中国国家自然科学基金;
关键词：
mechanical properties; SiC; (W; Ti)C; ceramic composites; microstructure;
D O I：
10.1016/j.ceramint.2007.03.003
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
SiC/(W, Ti)C ceramic composites with different content of (W, Ti)C solid-solution were produced by hot pressing. The effect of (W, Ti)C content on the microstructure and mechanical properties of SiC/(W, Ti)C ceramic composites has been studied. Densification rates of the SiC/(W, Ti)C ceramic composites were found to be affected by addition of (W, Ti)C. Increasing (W, Ti)C content led to increase the densification rates of the composites. The sintering temperature was lowered from 2100 degrees C for monolithic SiC to 1900 degrees C for the SiC/(W, Ti)C composites. Results show that additions of (W, Ti)C to SiC matrix resulted in improved mechanical properties compared to pure SiC ceramic. The fracture toughness and flexural strength continuously increased with increasing (W, Ti)C content up to 60 vol.%, while the hardness decreased with increasing (W, Ti)C content. (C) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：1361 / 1366
页数：6
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