Highly corrosion-resistant zincate type zinc-iron-phosphorus all

Details Highly corrosion-resistant zincate type zinc-iron-phosphorus all Highly corrosion-resistant zincate type zinc-iron-phosphorus all

1995-05-26

1997-05-20

Gorgos, Kathryn

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Depositing predominantly alloy coating

205255, 205258, 205259, 106 125, 106 127, C25D 356, C23C 1600, C23C 1800, C23C 2000

Patent

active

056309295

ABSTRACT:
A zinc-iron-phosphorus alloy-plating bath having a pH of not less than 13 and containing iron, phosphorus and zinc sources in amounts required for electro-depositing a zinc-iron-phosphorus alloy film having an iron content ranging from 0.1 to 30% by weight, a phosphorus content ranging from 0.001 to 1.5% by weight and the balance of zinc, and an auxiliary agent for depositing phosphorus. The use of the alkaline plating bath permits the formation of a zinc-iron-phosphorus alloy film, through plating, excellent in lustre of deposit, throwing power and corrosion resistance and the reduction in corrosion of the plating equipment and also permits the formation of a film, through plating, having excellent adhesion as an undercoat for painting.

REFERENCES:
patent: 4541903 (1985-09-01), Kyono et al.
patent: 5395510 (1995-03-01), Kikuchi et al.

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