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预氧丝原位碳化无粘剂C/C复合材料同其它C/C复合材料一样同样存在抗氧化性能差这一致命弱点,采用防氧化涂层面也不能很好地解决涂层与基体间热膨胀所带来的裂纹问题。通过添加对C/C复合材料抗氧化有明显抑制作用和自愈合作用的陶粉,讨论了添加剂对预氧丝原位碳化C/C复合材料抗氧化性的影响规律。结果表明添加剂B_4C、SiC、S_1的含量分别为10％、10％、5％时,能显著地提高该材料的抗氧化能力。
Preoxidation in-situ carbonized non-tacky C / C composites also have the same weakness as other C / C composites in terms of poor oxidation resistance. The use of anti-oxidant coating can not solve the problem Thermal expansion caused by the crack problem. The effects of additives on the oxidation resistance of preoxidized in-situ carbonized C / C composites were discussed through the addition of ceramic powders that significantly inhibit the oxidation of C / C composites and self-healing. The results showed that the additive B 4 C, SiC and S 1 content of 10%, 10%, 5%, respectively, can significantly improve the antioxidant capacity of the material.