摘要
采用包埋法、料浆法与化学气相沉积法相结合制备了防止炭/炭复合材料在高温下氧化的SiC-MoSi2/SiC涂层。借助SEM、EDS及XRD等测试手段对涂层的微观形貌、元素分布和相组成进行了观察与分析。涂层试件的氧化试验结果表明,所制备的SiC-MoSi2/SiC涂层炭/炭复合材料试样经1 500℃氧化20 h后氧化失重率仅为2.8%。涂层的防氧化失效主要是由于涂层中形成穿透性缺陷引起的。
SiC-MoSi,/SiC antioxidation coating for C/C composites was prepared by means of combination technique of pack cementation, slurry method and chemical vapor deposition. Microstructure, ingredient distribution and phase composition of the coating were analyzed by means of SEM,EDS and XRD. The oxidation experimental results show that oxidation weight loss rate of the prepared SiC-MoSi2/SiC coating after oxidization for 20 h at 1 500 ℃ is only 2.8%. Anti-oxidation failure of the coating was mainly resulted from penetrating defect.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2008年第6期638-641,共4页
Journal of Solid Rocket Technology
基金
国家"973"资助项目(2006CB600908)
