Production of Zn-Ni alloy plated steel strips

Details Production of Zn-Ni alloy plated steel strips Production of Zn-Ni alloy plated steel strips

1985-04-23

1986-02-11

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204 442, C25D 356, C25D 706

Patent

active

045697310

ABSTRACT:
Steel strips are electrogalvanized with a Zn-Ni alloy deposit having the desired nickel content in a consistent manner for a long time by placing separate Zn and Ni soluble anodes in a chloride plating bath comprising major proportions of ZnCl.sub.2 and NiCl.sub.2 in an Ni/(Zn+Ni) ratio between 0.08 and 0.20 and a total molar amount of Zn+Ni of from 1 to 4 moles per liter, and b mole per liter of KCl and a mole per liter of NH.sub.4 Cl as shown in FIG. 8; passing a steel strip through the bath; and introducing currents to the soluble Zn and Ni anodes in a specific ratio given by equation (2).

REFERENCES:
patent: 2679475 (1954-05-01), Singler
patent: 2844530 (1958-07-01), Wesley et al.
patent: 3420754 (1969-01-01), Roehl
patent: 4249999 (1981-02-01), Tsuda
patent: 4282073 (1981-08-01), Hirt
patent: 4285802 (1981-08-01), Rynne
patent: 4313802 (1982-02-01), Shibuya
patent: 4388160 (1983-06-01), Rynne
patent: 4416737 (1983-11-01), Austin

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