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用扫描电镜观察碳毡-碳复合材料的烧蚀样品,结果表明:预氧化PAN纤维和中强度PAN碳纤维在石墨化过程中,内部结构发生了变化;根据分析结果给出了复合后碳纤维的三维结构模型图,并对烧蚀特征进行了分析。
Scanning electron microscopy (SEM) was used to observe the ablated samples of carbon felt-carbon composites. The results showed that the internal structure of the pre-oxidized PAN fibers and the medium-strength PAN carbon fibers changed during the graphitization process. According to the analysis results, Structural model diagram, and the ablation characteristics were analyzed.