以ZrB2-SiC-ZrC复相超高温陶瓷为研究对象,对X射线衍射的K值法、二次电子像结合背散射电子像、电子背散射衍射结合能谱面扫描三种相组成的定量分析方法进行了比较,结果显示K值法使用简单、方便;SEM的两种定量方法不仅可以定量分析相组成,还能反映相分布与相关系.三种定量方法的结果较一致,均显示该复相陶瓷实际相组成远远偏离反应烧结设计相组成,其中,ZrO2杂质相实际含量多于5vol％,ZrC相含量远低于理论值5vol％,K值法显示其含量甚至低于1vol％.相组成的定量分析为进一步开展微结构研究及复合材料设计提供了必要的技术基础.
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