期刊
CORROSION SCIENCE
卷 167, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2020.108522
关键词
SiCf/SiC composite; PyC/SiC multilayer interface; Mechanical properties; Oxidation behavior; Self-healing characteristics
资金
- National Natural Science Foundation of China [21071011]
SiC fiber-reinforced SiC ceramic matrix composites with a novel PyC/SiC multilayer interface were oxidized at 500 degrees C-1100 degrees C for more than 400 h. The oxidation resistance of the composites was evaluated by micro-structural and mechanical evolution. Results showed that the PyC layer of composites was completely consumed after oxidation at 500 degrees C and 700 degrees C, thereby resulting in significant mechanical-property degradation. By contrast, 97 % and 101 % strength remained after oxidation at 900 degrees C and 1100 degrees C, respectively. The transformation was associated with the self-healing characteristics of the composites beyond 900 degrees C.
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