| 摘要 |
An environmental coating (22) suitable for use on turbine components, such as turbine disks and turbine seal elements, formed of alloys susceptible to oxidation and hot corrosion. The environmental coating (22) is predominantly a solid solution phase of nickel, iron, and/or cobalt. The coating (22) contains about 18 weight percent to about 60 weight percent chromium, which ensures the formation of a protective chromia (Cr 2 O 3 ) scale (28) while also exhibiting high ductility. The coating (22) may further contain up to about 8 weight percent aluminum, as well as other optional additives. The environmental coating (22) is preferably sufficiently thin and ductile to enable compressive stresses to be induced in the underlying substrate (26) through shot peening without cracking the coating (22). |
