Analysis on Toughening Mechanisms of Different SiC Particle Reinforced Thermal Protective Ceramics

被引：0
|
作者：
Liang Jun [1 ]
Wang Chao [1 ]
Luan Xu [1 ]
Wang Baolai [1 ]
机构：
[1] Harbin Inst Technol, Harbin 150001, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2009年 / 38卷
关键词：
thermal protective ceramics; toughening mechanisms; SiC particle; indentation test; COMPOSITES;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Through the indentation test for hot-pressed ZrB(2)+SiC, HfB(2)+SiC and in situ ZrB(2)+SiC, the toughening mechanism of SiC particle reinforced thermal protective ceramics was analyzed mechanically. The difference in different toughening modes was given through crack development and energy dissipation, which shows that the synergistic effects of crack deflection, crack bridging, crack bifurcation and crack pinning are the main reason to increase the toughness of SiC particle reinforced thermal protective ceramics. Further, the chemical matching between matrix and reinforcement also influences the toughening effects.
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页码：894 / 897
页数：4
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