Carbon fiber-reinforced silicon carbide（C/SiC） composites are significantly important candidates for thermal protection materials. The corrosion mechanism of C/SiC composite materials is the basis of their optimization and application. In this study, structural evolution of C/SiC composites fabricated by chemical vapor infiltration was investigated in the salt-fog storage environment. Furthermore, the effect of salt-fog on their ablation behaviors under oxyacetylene flame environment was studied. The ablation morphologies and corrosion mechanisms of C/SiC composites were analyzed and discussed. The results indicated that silica layer with size of c.a. 20 nm was formed on the surface of composite. The extent of corrosion in salt fog was limited, and it had little effect on the ablation behavior of the C/SiC composites,as well on the tensile strength and bending strength.
类型: 期刊论文
作者: Su Cheng,Xing Zhao,Guang Yang,Yiguang Wang
来源: Journal of Materials Science & Technology 2019年12期
年度: 2019
分类: 工程科技Ⅰ辑,工程科技Ⅱ辑
专业: 材料科学,航空航天科学与工程
单位: Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University
分类号: TB33;V25
页码: 2772-2777
总页数: 6
文件大小: 6256K
下载量: 3
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