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考察了氧化气氛（空气流量、空气湿度和氧化介质等）对Ｂ４Ｃ－ＳｉＣ／Ｃ复合材料自愈合抗氧化性的影响。对复合材例的恒温氧化行为进行了实验研究。结果发现：在某个临界值以下。空气流量的增加主要是加速氧气向材料内部扩散。导致氧化质量损失增加；高于临界值，空气流量的增加可以加速复合材料表面陶瓷粒子的氧化转化，从而促进实现自愈合抗氧化。湿空气在低温下（１０００℃）主要是促进了复合材料表面的Ｂ２Ｏ３以硼酸和偏硼酸的形式挥发，对自愈合抗氧化性不利；但在高温（１２００℃）下，湿空气反而可以促进ＳｉＣ粒子的氧化转化，时自愈合抗氧化有利。在强的氧化介质（如氧气）中氧化时，复合材料内部大量的炭基体颗粒和Ｂ４Ｃ粒子首先发生强烈的选择性氧化反应，自愈合抗氧化性较差。
The effects of oxidation atmosphere (air flow rate, air humidity and oxidation medium) on the self-healing antioxidant properties of B4C-SiC / C composites were investigated. The thermostatic oxidation behavior of composite materials was studied experimentally. The result was found to be below a certain threshold. The increase of air flow mainly accelerates the diffusion of oxygen into the material. Resulting in an increase in the mass loss of oxidation; above the critical value, an increase in air flow can accelerate the oxidative conversion of the ceramic particles on the composite surface, thereby promoting self-healing oxidation. Wet air at low temperature (1000 ℃) mainly promoted the volatilization of B2O3 in the form of boric acid and metaboric acid on the composite surface, which was not good for self-healing oxidation resistance. However, under the high temperature (1200 ℃) The oxidative transformation of SiC particles, self-healing antioxidant. In a strong oxidizing medium (such as oxygen) oxidation, a large number of carbon composite matrix particles and B4C particles first strong selective oxidation reaction, self-healing oxidation resistance is poor.