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制备了Ｂ４Ｃ－ＳｉＣ／Ｃ复合材料，并对其在８００℃，１０００℃，１２００℃的恒温氧化行为进行了考察。在实验基础上，分析了影响其氧化行为的主要因素，并对复合材料的自愈合抗氧化性进行了初步评价。结果表明，复合材料在氧化过程中表现出自愈合抗氧化特性，这种性能依赖于复合材料中的Ｂ４Ｃ、ＳｉＣ的含量、配比及氧化温度和氧化气氛。经过分析认为，复合材料的自愈合抗氧化性的差异可归因于在氧化条件下，复合材料表面生成陶瓷氧化物Ｂ２Ｏ３与ＳｉＯ２的速率、含量及其物性（粘性、对基体材料的润湿性、挥发性和对氧的扩散系数）的不同。
The B4C-SiC / C composites were prepared and their isothermal oxidation behaviors at 800 ℃, 1000 ℃ and 1200 ℃ were investigated. Based on the experiment, the main factors that affect the oxidation behavior were analyzed, and the self-healing oxidation resistance of the composites was preliminarily evaluated. The results show that the composite exhibits self-healing and oxidation resistance during the oxidation process, which depends on the content of B4C and SiC, the ratio of the composite and the oxidation temperature and oxidation atmosphere. After analysis, the difference of the self-healing antioxidant properties of the composites can be attributed to the rate, content and physical properties (viscosity, wetting of the base material) of ceramic oxide B2O3 and SiO2 formed on the surface of the composite under oxidizing conditions Sex, volatility and oxygen diffusion coefficient).