Crack formation and distribution of SiC coating prepared by CVD on carbon/carbon composites

Junliang Zhu, Xiaohong Shi, Hejun Li, Zibo He

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In order to further study the cracks initiation and distribution mechanism of SiC coating, then optimize the coating structure and composition on surface of C/C composites, CVD method is used to deposit SiC coating on C/C composites and pyrolytic carbon. Through the analysis on the reasons of cracks initiation via SEM, the influence of different kinds of substrates and the toughening of SiC whisker on the cracks initiation and distribution are researched. The results show that the cracks easily form in the area near the defects and sample edge, and the cracks also mainly distribute in the direction which are perpendicular to the first fiber layer. Compared with pyrolytic carbon matrix, cracks on C/C composites matrix are width and numerous, and SiC whisker toughening coating can significantly reduce the number of cracks.

源语言英语
主期刊名Inorganic Thin Films and Coatings
出版商Trans Tech Publications Ltd
28-31
页数4
ISBN(印刷版)9783037855669
DOI
出版状态已出版 - 2013
活动2012 Workshop on Inorganic Thin Films and Coatings - Guilin, 中国
期限: 16 7月 201218 7月 2012

出版系列

姓名Key Engineering Materials
537
ISSN(印刷版)1013-9826
ISSN(电子版)1662-9795

会议

会议2012 Workshop on Inorganic Thin Films and Coatings
国家/地区中国
Guilin
时期16/07/1218/07/12

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