C/C-SiC-ZrC composites fabricated by reactive melt infiltration with Si_0.87Zr_0.13 alloy

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• 作者：Yiguang Wang ; ^{wangyiguang@nwpu.edu.cn} ; Xiaojuan Zhu ; Litong Zhang ; Laifei Cheng
• 关键词：Ceramic&ndash ; matrix composites (CMCs) ; Liquid metal infiltration (LMI) ; Formation mechanism
• 刊名：Ceramics International
• 出版年：2012
• 期刊代码：13_02728842
• 类别：ms
• 出版时间：July, 2012
• 卷：38
• 期：5
• 页码：4337-4343
• 文件大小：1418 K

摘要

Carbon fiber reinforced carbon-silicon carbide-zirconium carbide (C/C-SiC-ZrC) composites were prepared by reactive melt infiltration (RMI) with Si_0.87Zr_0.13 alloy. Carbon fiber felt was firstly infiltrated by carbon using chemical vapour infiltration to obtain a porous carbon/carbon (C/C) skeleton. The molten Si_0.87Zr_0.13 alloy was then infiltrated into the porous C/C to obtain C/C-SiC-ZrC composites. The C-SiC-ZrC matrix showed a gradient structure with deposited carbon and SiC close to the fiber tows. It has been found that the C/C-SiC-ZrC showed a high strength, good oxidation resistance, and excellent ablation resistance. These properties are attributed to the gradient matrix structure.