Platinum underlayers and overlayers for coatings

Details Platinum underlayers and overlayers for coatings Platinum underlayers and overlayers for coatings

1981-02-17

1984-10-16

Lewis, Michael L.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428670, 428678, 428680, 428685, B32B 04

Patent

active

044775385

ABSTRACT:
A coating for nickel/cobalt base alloys used in gas turbine constructions comprises a platinum metal underlayer, an intermediate MCrAlY layer, and a platinum metal overlayer. The platinum type metal is selected from the group consisting of platinum, rhodium, palladium and/or iridium. The MCrAlY 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.

REFERENCES:
patent: 3819338 (1974-06-01), Bungardt et al.
patent: 3890456 (1975-06-01), Dils
patent: 3999956 (1976-12-01), Stueber et al.
patent: 4123594 (1978-10-01), Chang
Kubaschewski, O.; et al.; Oxidation of Metals and Alloys 2nd edition, Acaic Press, London, p. 1, (1962).

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