【摘要】 采用化学气相渗透 (CVI)法和液相浸渍有机物先驱体混合工艺制备了C/C—SiC复合材料 ,并对复合材料力学性能、抗烧蚀性能和抗氧化性能进行表征。结果表明 :制备的C/C—SiC复合材料在基本保持C/C复合材料力学性能的基础上 ,抗氧化和抗烧蚀性能得以大幅度提高 ,提出了制备兼具C/C复合材料与陶瓷材料优良性能的碳陶结构复合材料的技术途径。更多还原

【Abstract】 Fabrication of carbon fiber reinforced carbon ceramic matrix composites by chemical vapor infiltration (CVI) and liquid impregnation of organic precursors is presented in this paper.Mechanical properties, ablation protection and oxidation resistance of C/C SiC are characterized.Research results show that C/C SiC composites with comparable fracture behavior and flexure strength to those of C/C materials,have better ablation protection and oxidation resistance. It is provided a technical approach to manufacture the carbon ceramic composites which have comparable properties not only to that of C/C materials, but also to that of ceramics.更多还原