Characterization of coating cracks in oxidation-resistant SiC coating on C C composites

被引：2
作者：
Aoki, T [1 ]
Hatta, H
Goto, K
Fukuda, H
机构：
[1] Sci Univ Tokyo, Chiba 2788510, Japan
[2] Inst Space & Astronaut Sci, Kanagawa 2298510, Japan
来源：
HIGH TEMPERATURE CERAMIC MATRIX COMPOSITES III | 1999年 / 164-1卷
关键词：
SiC coating; C C composite; coating crack; oxidation behavior; cracking behavior;
D O I：
10.4028/www.scientific.net/KEM.164-165.283
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：
Oxidation behavior of the SiC-coated C/C composites and cracking behavior of the SiC coating were discussed. In the oxygen diffusion controlling temperature range, an analytical model was developed for the prediction of weight loss due to oxidation of the SiC-coated CIC composites. This model was derived from the consideration of the oxygen diffusion through the coating cracks. The oxidation rate based on this model is in fairly good agreement with the experimental results. To make the model self-consistent, an FEM model for the prediction of the spacing and width of the coating cracks was then proposed. The predictions by this model agreed with that of experimental observation as a function of coating thickness, coating treatment temperature.
引用
收藏
页码：283 / 286
页数：4
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