摘要
2D C/ZrC-SiC composites were fabricated by chemical vapor infiltration combined with polymer slurry infiltration and pyrolysis. Liquid highly branched polycarbosilane was used as the pre-ceramic precursor. In order to improve the oxidation resistance, three kinds of coating structures were prepared on C/ZrC-SiC composites: pure zirconium carbide coating, SiC-ZrC coating, and ZrB2-SiC coating. Structural evolutions of the as-produced composites after oxidation in CH4 combustion gas atmosphere at about 1800 °C were investigated and compared. Based on a model of the oxidation process, the mixture ZrB2-CVD SiC showed the best oxidation resistance.
源语言 | 英语 |
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页(从-至) | 2277-2282 |
页数 | 6 |
期刊 | Ceramics International |
卷 | 35 |
期 | 6 |
DOI | |
出版状态 | 已出版 - 8月 2009 |
已对外发布 | 是 |