Aluminide coating for superalloys

Details Aluminide coating for superalloys Aluminide coating for superalloys

1989-03-06

1990-06-12

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428615, 428652, 428660, 428663, 428678, 428220, 428457, 4289088, 419 8, 419 9, 419 30, 419 38, 427 34, 427250, B22F 704

Patent

active

049332392

ABSTRACT:
A protective coating system for superalloys is described. The coating is an active element enriched aluminide, and can be formed by aluminizing an overlay coated superalloy, wherein during the aluminizing process, aluminum diffuses completely through the overlay coating and into the substrate. The coating system exhibits desirable oxidation resistance and resistance to thermal fatigue cracking, due to the presence of oxygen active elements in the overlay.

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