Metallic coated article of improved environmental resistance

Details Metallic coated article of improved environmental resistance Metallic coated article of improved environmental resistance

1977-09-22

1978-10-31

Steiner, Arthur J.

Stock material or miscellaneous articles

All metal or with adjacent metals

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

428652, 428653, 428660, 428667, 428670, 428678, B32B 1518, B32B 1520

Patent

active

041235940

ABSTRACT:
A metallic article is provided with improved resistance to high temperature environmental conditions, particularly hot corrosion resistance, through the interdiffusion with the article substrate of a complex graded coating including an inner portion which includes Cr and at least one of the elements Fe, Co and Ni and an outer portion including Al and at least one element selected from Hf, Pt, Rh and Pd.

REFERENCES:
patent: 3869779 (1975-03-01), Gedwill et al.
patent: 3873347 (1975-03-01), Walker et al.
patent: 3918139 (1975-11-01), Felten
patent: 3976436 (1976-08-01), Chang
patent: 3996021 (1976-12-01), Chang et al.
patent: 3998603 (1976-12-01), Rairden
patent: 4005989 (1977-02-01), Preston

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