Crack-healing mechanism by alumina/SiC particles/SiC whiskers multi-composite

被引：8
|
作者：
Nakao, W [1 ]
Osada, T [1 ]
Yamane, K [1 ]
Takahashi, K [1 ]
Ando, K [1 ]
机构：
[1] Yokohama Natl Univ, Fac Engn, Yokohama, Kanagawa 240, Japan
来源：
JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2005年 / 69卷 / 08期
关键词：
crack-healing; ceramic matrix composite; structural ceramics; mechanical properties; intelligent materials;
D O I：
10.2320/jinstmet.69.663
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Alumina reinforced SiC particles and whiskers composites having high crack-healing ability and fracture toughness were prepared. The crack-healing behavior was systematically investigated. From the obtained results, the mechanisms of the composites were studied. For the crack-healing by SiC whiskers alone, partial bonds were formed by connecting between the crack surface and the bridging SiC whiskers. As a result, the crack-healed part has low reliability although the strength is sufficiently recovered by crack-healing. On the contrary, alumina/SiC particles/SiC whiskers multi-composite could form the crack-healed part having high reliability, as the space between the crack surfaces was completely filled with the formed oxide.
引用
收藏
页码：663 / 666
页数：4
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