%0 Journal Article
%T Desulphurization during VIM Refining Ni-base Superalloy using CaO Crucible
%A Jianping NIU
%A Kenu YANG
%A Tao JIN
%A Xiaofeng SUN
%A Hengrong GUAN
%A Zhuangqi HU
%A <br>
%J 材料科学技术学报
%D 2003
%I 
%X The variation of S content during VIM refining Ni-base superalloy using CaO crucible was studed. It was foundthat the desulphurization process could not be carried out by only using CaO crucible. The role of Al additionto desulphurization was also studied. Combining with the results of XRD and composition analysis of the CaOcrucible, the mechanism of desulphurization was proposed. Thermodynamical calculation about the reaction betweenthe interface of CaO crucible and liquid metal has been discussed. This work indicated that under proper refiningtechnology the S content in the liquid Ni-base alloy could be reduced from 3×10-5 to 2×10-6～4×10-6.
%K Ni-base superalloy
%K CaO crucible
%K VIM
%K Desulphurization<br>超耐热合金
%K 镍基合金
%K CaO坩锅
%K VIM
%K 脱硫
%K 精炼
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=D15811F7E8586362&yid=D43C4A19B2EE3C0A&vid=2A8D03AD8076A2E3&iid=CA4FD0336C81A37A&sid=CB423C9A71560A74&eid=AA76E167F386B6B3&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=14