Nickel and/or cobalt-coated steel with carburized interface

Details Nickel and/or cobalt-coated steel with carburized interface Nickel and/or cobalt-coated steel with carburized interface

1975-03-04

1977-03-22

Lovell, C.

Metal treatment

Compositions

Heat treating

291966, 148 315, 204 38R, 427405, 427406, C23C 1112, C25D 550

Patent

active

040134873

ABSTRACT:
A case-hardened, corrosion-resistant steel article is provided which comprises, applying a coating of nickel and/or cobalt to the surface of the article and then subjecting said coated article to carburization by heating said coated article to and maintaining it at an austenitic temperature under carburizing conditions for a time sufficient to effect carbon diffusion into the surface of the steel article. The corrosion resistance of the steel may be further enhanced by applying a thin layer of a final metal coat selected from the group consisting of Cr, Sn, Pb, Zn, Cu and Cd.

REFERENCES:
patent: 1978180 (1934-10-01), Weiller
patent: 1984411 (1934-12-01), Holt
patent: 2294562 (1942-09-01), Kingston
patent: 2315740 (1943-04-01), Schoonmaker
patent: 3206324 (1965-09-01), Daesen
patent: 3647572 (1972-03-01), Todd et al.
patent: 3668951 (1972-06-01), Talmage
patent: 3769084 (1973-10-01), Saito et al.

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