发明授权
- 专利标题: Molten salt leach for removal of inorganic cores from directionally solidified eutectic alloy structures
- 专利标题(中): 从方向固化的保护性合金结构中去除无机碳的浸出盐水
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申请号: US775749申请日: 1977-03-09
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公开(公告)号: US4082566A公开(公告)日: 1978-04-04
- 发明人: Ronald H. Arendt , Marcus P. Borom , Irvin C. Huseby , Frederic J. Klug
- 申请人: Ronald H. Arendt , Marcus P. Borom , Irvin C. Huseby , Frederic J. Klug
- 申请人地址: NY Schenectady
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: NY Schenectady
- 主分类号: B22D29/00
- IPC分类号: B22D29/00 ; B08B3/10
摘要:
Cores made of either Y.sub.2 O.sub.3, Y.sub.3 Al.sub.5 O.sub.12, LaAlO.sub.3, MgAl.sub.2 O.sub.4 or Al.sub.2 O.sub.3 are removed from castings of advanced superalloy materials by immersion in a molten salt bath of either Li.sub.3 AlF.sub.6 or a mixture of CaF.sub.2 -- NaF.
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