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研究了使用 Ca O坩埚真空感应熔炼炼 Ni基高温合金过程中的脱硫情况 ;分析了加 Al的脱硫作用 ;结合坩埚壁的 XRD分析和成分分析数据讨论了 Ca O坩埚脱硫机理 ;对 Ca O坩埚内壁表面发生的化学反应进行了初步热力学计算和讨论
The desulphurization of Ca-based superalloy by vacuum induction melting with CaO crucible was studied. The desulphurization of Al-based superalloy was analyzed. The desulfurization mechanism of CaO crucible was discussed based on the XRD and compositional analysis data of the crucible wall. The chemical reaction on the inner wall surface has been calculated and discussed