Yttrium and yttrium-silicon bearing nickel-base superalloys...

Details Yttrium and yttrium-silicon bearing nickel-base superalloys... Yttrium and yttrium-silicon bearing nickel-base superalloys...

C - Chemistry, Metallurgy

22

C

75/109, 13/7

C22C 19/05 (2006.01)

Patent

CA 1245476

13DV-8334 YTTRIUM AND YTTRIUM-SILICON BEARING NICKEL-BASE SUPERALLOYS ESPECIALLY USEFUL AS COMPATIBLE COATINGS FOR ADVANCED SUPERALLOYS Abstract There is provided by the present invention yttrium and yttrium-silicon bearing alloys which are chemically and mechanically compatible with advanced nickel-base superalloys and nickel-base eutectic superalloys and which posses excellent resistance to high temperature oxidation. The alloys of the invention are, therefore, particularly useful as a protective environmental coatings for the external surfaces of hot-stage aircraft gas turbine engine components, e.g., rotating blades and stationary vanes, made from such advanced superalloys.

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