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用扫描电镜观察了复合材料高温氧化后的表面形貌，通过对复合材料断面ＳＥＭ考察获得了复合材料氧化后表面陶瓷层的厚度，据此对复合材料氧化过程中的结构变化与其自愈合抗氧化的相关性进行了分析。结果表明：８００℃氧化时，复合材料表面的陶瓷层主要由Ｂ２Ｏ３／ＳｉＣ粒子组成，复合材料中Ｂ４Ｃ含量高及Ｂ／Ｓｉ比大时，可实现较好的自愈合抗氧化；１０００℃氧化时，ＢＳ２０１０和ＢＳ２０２０复合材料样品表面形成了熔融流动性好的硼硅酸玻璃相，有着良好的自愈合抗氧化性；１２００℃氧化时，随着复合材料中ＳｉＣ含量及陶瓷总含量的增加，复合材料（ＢＳ２０２０和ＢＳ１５３０）表面趋于形成致密的硼硅酸玻璃相，从而有利于高温自愈合抗氧化。
The surface morphology of the composites after high temperature oxidation was observed by scanning electron microscopy. The thickness of the surface ceramic layer after the composite was oxidized was obtained by SEM observation of the cross-section of the composite material. The structure change and self-healing resistance The correlation of oxidation was analyzed. The results show that the ceramic layer on the composite surface mainly consists of B2O3 / SiC particles when the temperature is 800 ℃, the self-healing and oxidation resistance can be achieved when the content of B4C in the composite is high and the B / Si ratio is large. , BS2010 and BS2020 composite samples formed on the surface of a good melt fluid borosilicate glass phase, has a good self-healing oxidation resistance; 1200 ℃ oxidation, with the composite SiC content and the total ceramic content increased , The surface of composites (BS2020 and BS1530) tend to form a dense borosilicate glass phase, which is conducive to high temperature self-healing antioxidant.