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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。
Abstract：The CaO–ZrO2 complex oxide refractory was developed for melting of titanium alloy. The crucibles were prepared by pressing method and sintered at 1 650 ℃ and 1 680 ℃, respectively. The TiNi alloy was melt under vacuum at 1 500 ℃ for 5 min by the induction furnace. The water resistance of crucible sintered at 1 680 ℃ was tested. The phase compositions were analyzed by using X-ray diffraction. The interfacial reaction between the Ti alloy and CaZrO3 refractory was observed by scanning electron microscope with energy dispersive X-ray spectroscopy. The results show that the crucible sintered at 1 680 ℃ possesses a good hydration resistance. The thickness of interfacial reaction layer between Ti and CaZrO3 crucible is about 30 μm and there are few elements such as Ca, Zr, Ti, and Ni diffused through the interfacial reaction layer.
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基本信息:
中图分类号:TQ175.1
引用信息:
[1]高永辉,庞威,李重河,等.CaZrO_3耐火材料的制备及其与钛合金熔体的界面反应[J].硅酸盐学报,2009,37(12):2007-2011.
基金信息:
国家科委支撑计划(2006BA103A05);; 上海市科委重点科研(08DZ2201200);; 国家“973”计划(2007CB613606);; 国家“863”计划(2006AA11A189);; 自然科学基金(NSFC50774052)资助项目
2009-12-15
2009-12-15