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研究了不同抗氧化添加剂Ｂ４Ｃ粉、ＳｉＣ粉和铝粉对预氧丝在氧化铝／碳复合材料中原位碳化的影响及其碳化后纤维对材料的强化效果。结果表明，在氧化铝／碳复合材料中添加Ｂ４Ｃ后，由于高温下在材料表面形成了一薄层致密的玻璃相物质，抗氧化效果明显，预氧丝原位碳化后达到同类碳纤维的强度，复合材料强度也大幅度提高。其次，添加少量铝粉也能起到较好的保护作用
The effects of different antioxidant additives B4C, SiC and Al on the in-situ carbonization of preoxidized filaments in alumina / carbon composites and the strengthening effect of their carbonized fibers on the materials were investigated. The results show that the addition of B4C to alumina / carbon composites results in the formation of a thin layer of compact glassy material on the surface of the material at high temperature with obvious anti-oxidant effect. The carbon fibers pre-oxidized in situ achieve the same carbon fiber strength, Composite material strength is also greatly improved. Second, adding a small amount of aluminum can also play a better protective effect