- 专利标题： Beta-phase nickel aluminide overlay coatings and process therefor
- 专利标题（中）： β相镀镍及其制备方法
-
申请号： US10248056申请日： 2002-12-13
-
公开(公告)号： US07150922B2公开(公告)日： 2006-12-19
- 发明人: Irene Spitsberg , Joseph David Rigney , Ramgopal Darolia , Elissa Hae-Kyung Lee , Jeffrey Allan Pfaendtner
- 申请人： Irene Spitsberg , Joseph David Rigney , Ramgopal Darolia , Elissa Hae-Kyung Lee , Jeffrey Allan Pfaendtner
- 申请人地址： US 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： US NY Schenectady
- 代理商 David L. Narciso; Gary M. Hartman; Domenica N. S. Hartman
- 主分类号： B32B15/04
- IPC分类号： B32B15/04 ; F03B3/12
摘要：
A beta-phase nickel aluminide (NiAl) overlay coating (24) and method for modifying the grain structure of the coating (24) to improve its oxidation resistance. The coating (24) is deposited by a method that produces a grain structure characterized by grain boundaries (44) exposed at the outer coating surface (36). The grain boundaries (44) may also contain precipitates (40) as a result of the alloyed chemistry of the coating (24). During or after deposition, the overlay coating (24) is caused to form new grain boundaries (34) that, though open to the outer surface (36) of the coating (24), are free of precipitates or contain fewer precipitates (40) than the as-deposited grain boundaries (44). New grain boundaries (34) are preferably produced by causing the overlay coating (24) to recrystallize during coating deposition or after deposition as a result of a surface treatment followed by heat treatment.
公开/授权文献
信息查询
