Mullite-Al2O3-SiC oxidation protective coating for carbon/carbon composites

Jian Feng Huang, Xie Rong Zeng, He Jun Li, Xin Bo Xiong, Min Huang

科研成果: 期刊稿件文章同行评审

145 引用 (Scopus)

摘要

In order to exploit the unique high temperature mechanical properties of carbon/carbon (C/C) composites, a new type of oxidation protective coating has been produced by a two-step pack cementation technique in an argon atmosphere. XRD analysis showed that the internal coating obtained from the first step was a gradient SiC layer that acts as a buffer layer, and the multi-layer coating formed in the second step was an Al2O3-mullite layer. It was found that the as-received coating characterized by excellent thermal shock resistance on the surface of C/C composites during exposure to an oxidizing atmosphere at 1873 K, could effectively protect the C/C composites from oxidation for 45 h. The failure of the coating is due to the formation of bubble holes on the coating surface.

源语言英语
页(从-至)2825-2829
页数5
期刊Carbon
41
14
DOI
出版状态已出版 - 2003

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