综述了3种新型复合氧化物(CaZrO3、SrZrO3和BaZr03)坩埚的制备工艺,分析了3种坩埚熔炼TiNi合金后的效果和界面反应情况.合金熔体与耐火材料间无元素扩散,3种耐火材料均对合金熔体具有良好的反应惰性.此外,通过对比3种耐火材料坩埚与熔体间的界面反应层厚度,发现BaZrO3对TiNi合金熔体具有最高的化学稳定性.进一步使用BaZrO3制备成工业用25 kg级坩埚并熔炼TiNi、TiFe、TiAl铸锭,发现铸锭杂质含量较低,说明BaZr03是一种极具潜力的钛合金熔炼用新型耐火材料.
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