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CaZrO_3耐火材料的制备及其与钛合金熔体的界面反应

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Abstract:

合成了一种CaO–ZrO2系复合耐火材料,用模压法成型,分别在1650℃和1680℃烧结制成坩埚。使用此坩埚在感应炉中熔化钛合金(TiNi),在真空条件下,1500℃保温5min。对在1680℃烧结成的坩埚进行了抗水化性能测试。用X射线衍射仪对CaZrO3材料进行物相分析。用扫描电子显微镜观察钛合金与此材料的界面反应层的微观形貌,结合能谱仪进行微区成分分析。结果显示1680℃烧成的CaZrO3材料具有良好的抗水化性;用此坩埚熔化TiNi合金后,液态钛合金和耐火材料的界面反应层厚度约为30μm,界面反应层中,Ca,Zr,Ti,Ni等元素无明显扩散。

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