Steel sheet with multilayer electroplating and method of produci

Details Steel sheet with multilayer electroplating and method of produci Steel sheet with multilayer electroplating and method of produci

1983-02-02

1984-12-25

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Porous

428659, 428684, 428687, C25D 510

Patent

active

044904380

ABSTRACT:
A steel sheet with two or more coatings and a method of producing the same are disclosed. The steel sheet has on at least one side a discontinuous surface layer of an Fe or Fe--Zn base alloy, preferably an Fe--Zn base alloy electrodeposit containing Sn in an amount of 0.01 to 50 mg/m.sup.2, usually in an amount of 1.0 to 50 mg/m.sup.2, preferably in an amount of 3.0 to 30 mg/m.sup.2, and also 5 to 50% by weight of Zn in case Fe--Zn alloy is used, and a layer of Zn--Ni or Zn--Fe alloy electrodeposit, which lies directly under said discontinuous surface layer.

REFERENCES:
patent: 2258327 (1941-10-01), Kramer
patent: 3812566 (1974-05-01), Clauss
patent: 4216272 (1980-08-01), Clauss
patent: 4252866 (1981-02-01), Matsudo et al.
patent: 4314893 (1982-02-01), Clauss
patent: 4407900 (1983-10-01), Kirihara et al.

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