Powder mixture for making yttrium enriched aluminide coatings

Details Powder mixture for making yttrium enriched aluminide coatings Powder mixture for making yttrium enriched aluminide coatings

1989-03-03

1991-03-19

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75 57, B22F 100

Patent

active

050007823

ABSTRACT:
Methods are described for forming an yttrium enriched aluminide coating on the surface of a nickel or cobalt base superalloy article. In one preferred embodiment, a pack mixture for forming the coating consists essentially of, by weight percent, 5-35 of an Al-Y-Si alloy, 1-20 CoI.sub.2, balance Y.sub.2 O.sub.3.

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G. K. Sigworth, "A Scientific Basis for the Degassing of Aluminum", Paper No. 87-81, 91st AFS Casting Congress and CASTEXPO '87, Apr. 6-10, 1987.

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