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中文摘要：
采用化学气相沉积法制备了BC，涂层，研究了水氧耦合环境中，CVD—BCx的氧化过程机理并获得CVD—BCx氧化的动力学参数。CVD-BCx氧化生成的B2O3，可以对裂纹进行封填，利用CVD-BCx氧化时CVD—BCx的消耗速率和B20，的生成速率，对微裂纹的愈合时间进行预测，并用层状BC；／SiC结构中的预制裂纹进行实验验证。结果表明，理论预测结果与实验验证能够很好地吻合。
英文摘要：
BCx was prepared by Chemical Vapor Deposition （CVD） process, oxidation behavior of CVD-BCx and the kinetic parameters of CVD-BCx oxidation were obtained under water and oxygen environments. The B203 formed from the oxidation of CVD-BCx can seal the crack, by using the kinetic parameters of CVD-BCx consumption and B203 formation, the self-healing time of the crack can be predicted. The self-healing time of theoretical prediction was verified by the self-healing of the pre-crack in the layered BCx/SiC structure. The resuts show that the theoretical prediction time is matched the experimental results.
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