Oxidation behavior of glass/yttrium silicates/SiC multi-layer coating coated carbon/carbon composites in air and combustion gas environment at high temperature

Jianfeng Huang, Yaqin Wang, Hejun Li

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

Glass/yttrium silicates/SiC multi-layer coating for carbon/carbon (C/C) composite was prepared and the flexural strength and weight changes of the coated samples after oxidation in air and combustion atmosphere at 1500°C were investigated. Results show that when oxidation in air and combustion atmosphere, the C/C composites lost weight by a linear and a parabolic law respectively. The weight loss reaches its maximum value at about 800°C in air but the strength of the specimen arrives at the lowest value at about 850°C. There are three oxidation zones along the specimens. A non-oxidation zone is below 400°C. Close to it is the cracking-oxidation zone (400-1100°C). At the temperature range from 1100°C to 1500°C is the coating-oxidation zone. Fracture of the coated sample at the temperature spot of 850°C is observed after oxidation in combustion atmosphere at 1500°C for 70 hours, which are considered to be responsible for the cracking and decreasing in strength during the test in combustion atmosphere.

源语言英语
主期刊名Materials Processing Technologies
447-452
页数6
DOI
出版状态已出版 - 2011
活动2010 International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2010 - Shenzhen, 中国
期限: 6 11月 20108 11月 2010

出版系列

姓名Advanced Materials Research
154-155
ISSN(印刷版)1022-6680

会议

会议2010 International Conference on Advances in Materials and Manufacturing Processes, ICAMMP 2010
国家/地区中国
Shenzhen
时期6/11/108/11/10

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