采用热力学计算的方法,在精炼末期及铸锭取样化学分析,结合炉料的初始成分,对真空感应冶炼一种700℃超超临界锅炉镍基高温合金材料时,炉衬对碳脱氧反应的影响进行研究,结果表明:在本试验条件下,Al2O3坩埚对碳脱氧反应的影响可忽略不计,可以实现超纯冶炼；由计算结果推断,原始炉料中含有少量的铝,对防止碳与Al2O3坩埚反应,抑制金属液增氧起到有益作用.
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