Platinum Underlayers and Overlayers for Coatings.
Patent, Filed 17 Feb 81, patented 16 Oct 84,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A coating for nickelcobalt base alloys used in gas turbine constructions comprises a platinum metal underlayer, an intermediate MCrAIY layer, and a platinum metal overlayer. The platinum type metal is selected from the group consisting of platinum, rhodium, palladium andor iridium. the MCrAIY material consists of yttrium Y, aluminum Al, chromium Cr and a balance represented by the letter M and selected from the group cobalt, iron and nickel.
- Coatings, Colorants and Finishes
- Metallurgy and Metallography