Ablation behavior of ZrC-SiC coated C/C-ZrC-SiC composites prepared by precursor infiltration pyrolysis combined with reactive melt infiltration

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• 作者：Chunxuan Liu ; Zhean Su ; Qizhong Huang ; ^{Qizhonghuang_csu@126.com" class="auth_mail} ; ^{qzhuang@csu.edu.cn" class="auth_mail} ; Jianxun Chen ; Xin Yang ; Liuxu Cao ; Teng Yin ; Ping Zhong
• 关键词：Ceramics ; Composite materials ; Liquid&ndash ; solid reactions ; Corrosion ; Phase diagrams
• 刊名：Journal of Alloys and Compounds
• 出版年：5 June, 2014
• 年：2014
• 卷：597
• 期：Complete
• 页码：236-242
• 全文大小：4258 K

文摘

C/C-ZrC-SiC composites coated with ZrC-SiC were prepared by precursor infiltration pyrolysis combined with reactive melt infiltration. The microstructure and ablation behavior of the composites before and after ablation were investigated. The composites exhibit good ablation resistance with a surface temperature of over 2300 掳C. After ablation for 120 s, the mass and linear ablation rates of the composites are 0.0045 g/s and 0.0048 mm/s, respectively. The great ablation resistance of the composites is attributed to the formation of continuous integrated SiO₂-ZrO₂-SiC ceramic layer sealed the pores of the composites surface during ablation.