Ni基高温合金真空感应熔炼脱硫  

Desulphurization during VIM of Ni-base superalloy

作　　者：王建明[1] 牛建平[2] 才庆魁[1] 

机构地区：[1]东北大学材料冶金学院,辽宁沈阳110004 [2]沈阳大学机械工程学院,辽宁沈阳110044

出　　处：《真空》2004年第3期27-30,共4页Vacuum

基　　金：国家自然科学基金资助项目(50274052)

摘　　要：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 CaThe reduction of sulfur content during the VIM of Ni-base superalloy was studied using CaO crucible, where the role of Al addition in desulphurization was analyzed. Combining the XRD pattern with the compositional analysis of powdered CaO crucible wall, the mechanism of desulphurization was discussed. Thermodynamical calculation and discussion on the reaction between the inner surface of CaO crucible and liquid metal were also carried out.

关 键 词：CAO坩埚 NI基高温合金 真空感应熔炼(VIM) 脱硫 

分 类 号：TF133.2[冶金工程—冶金物理化学]