Yttrium enriched aluminide coating for superalloys

Details Yttrium enriched aluminide coating for superalloys Yttrium enriched aluminide coating for superalloys

1987-12-03

1990-03-20

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428565, 428678, 428680, B22F 704

Patent

active

049100920

ABSTRACT:
A protective coating system for superalloys is described. The coating is an yttrium enriched aluminide, and can be formed by aluminizing an MCrAlY coated superalloy, wherein during the aluminizing process, aluminum diffuses completely through the MCrAlY coating and into the substrate. The coating system exhibits desirable oxidation resistance and resistance to thermal fatigue cracking.

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