Accession Number : ADD013207

Title :   Platinum Underlayers and Overlayers for Coatings.

Descriptive Note : Patent, Filed 17 Feb 81, patented 16 Oct 84,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Clarke, Robert L

Report Date : 16 Oct 1984

Pagination or Media Count : 5

Abstract : A coating for nickel/cobalt 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 and/or 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.

Descriptors :   *PATENTS, *METAL COATINGS, GAS TURBINES, PROTECTIVE COATINGS, PLATINUM, NICKEL ALLOYS, COBALT ALLOYS, CHROMIUM ALLOYS, ALUMINUM ALLOYS, YTTRIUM ALLOYS, HIGH TEMPERATURE, CORROSION RESISTANCE, EROSION

Subject Categories : Coatings, Colorants and Finishes
      Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE