分别采用聚合物先驱体浸渗热解法（PIP）、浆料浸渗法（SI）结合PIP法和化学气相渗透法（CVI）制备了C/SiC复合材料,利用化学气相沉积（CVD）工艺在三种C/SiC复合材料表面制备了ZrC涂层,得到了C/SiC-ZrC复合材料。考核了三种C/SiC-ZrC复合材料在甲烷燃气环境中的氧化行为。结果表明：在甲烷风洞中1800℃氧化30 min后,前两种工艺制备的C/SiC-ZrC复合材料表面氧化严重,氧化失重率均达到12%以上;CVI工艺制备的C/SiC-ZrC复合材料氧化失重率最小（6.9%）,抗氧化性能最好。
Three different C/SiC composites were fabricated by polymer infiltration and pyrolysis（PIP）,slurry infiltration（SI） combined with PIP and chemical vapor infiltration（CVI）.ZrC coatings were prepared by chemical vapor deposition（CVD） on C/SiC to form C/SiC-ZrC composites.The oxidation behaviors of the C/SiC-ZrC composites were investigated in a CH4 combustion gas environment.The results indicate that the surfaces of the C/SiC-ZrC composites fabricated by PIP and SI＋PIP are severely oxidized with mass loss higher than 12% after oxidation at 1800℃ for 30 min.The C/SiC-ZrC composites fabricated by CVI exhibit the best oxidation resistance with a mass loss of 6.9%.
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