【摘 要】
：
分别采用包埋法和涂刷法在炭/炭(C/C)复合材料表面制备了MoSi2-SiC内涂层和ZrO2-MoSi2外涂层,借助扫描电镜、X射线衍射等测试手段对涂层的微观形貌和相组成进行了分析,同
【机 构】
：
西北工业大学炭/炭复合材料工程技术研究中心,陕西西安710072
【出 处】
：
中国金属学会炭素材料分会第二十六次学术交流会
论文部分内容阅读
分别采用包埋法和涂刷法在炭/炭(C/C)复合材料表面制备了MoSi2-SiC内涂层和ZrO2-MoSi2外涂层,借助扫描电镜、X射线衍射等测试手段对涂层的微观形貌和相组成进行了分析,同时研究了涂层在高温静态空气中的防氧化性能,并分析了涂层的防护机制。结果表明：SiC-MoSi2/ZrO2-MoSi2涂层厚度为250-300μm,无穿透性裂纹；添加ZrO2-MoSi2外涂层后,MoSi2-SiC涂层在1500℃静态空气中的有效防氧化时间从160小时延长至260小时以上；涂层中的ZrO2与SiO2发生反应生成ZrSiO4,有效提高了SiO2玻璃薄膜的高温稳定性,进而提高了涂层的防氧化性能。
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