摘要
研究了Ｎｉ基高温合金用ＣａＯ坩埚真空感应精炼过程中含Ｓ量的变化；发现只用ＣａＯ坩埚并不进行脱Ｓ．通过熔体化学成分变化研究了加Ａｌ的脱Ｓ作用；结合坩埚壁的ＸＲＤ分析和成分分析数据讨论了ＣａＯ坩埚脱Ｓ机理；对ＣａＯ坩埚内壁表面发生的化学反应进行了热力学计算和讨论．
The change of sulfur content during the process of VIM(vacuum induction melting) refining Ni-base superalloy using CaO crucible was studied. It was found that the desulphurization did not carry out by only using CaO crucible. The role of adding Al to desulphurization has been studied. Combining with the results of XRD and components analysis of CaO crucible, the mechanism of desulphurization was discussed. Thermodynamics calculation and discussion about the reaction between the inner surface of CaO crucible and liquid metal has been done.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第5期499-502,共4页
Acta Metallurgica Sinica
