Method of electrodepositing a chromium alloy deposit

Details Method of electrodepositing a chromium alloy deposit Method of electrodepositing a chromium alloy deposit

1986-11-03

1987-06-16

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204 431, C25D 356

Patent

active

046734716

ABSTRACT:
The invention provides a Cr alloy plating bath comprising a sulfate bath consisting essentially of divalent Cr ion and trivalent Cr ion in a total amount of between 1.5 to 2.0 mol/l, cation of one or more than two selected from the group consisting of potassium ion, sodium ion and ammonium ion in a total amount of 1.5 to 2.5 mol/l, and metal ion of one or more than two selected from the group consisting of Fe, Ni and Co, in an amount of less than 0.6 mol/l, wherein the invention provides stable plating, without requiring a separation between electrolytes with a diaphragm, and provides good deposition at high current efficiencies.

REFERENCES:
patent: 2766196 (1956-10-01), Yoshida
patent: 2822326 (1958-02-01), Safranek
patent: 2927066 (1960-03-01), Schaer
patent: 2990343 (1961-06-01), Safranek
patent: 3111464 (1963-11-01), Safranek et al.
patent: 3954574 (1976-05-01), Gyllenspetz et al.
patent: 4054494 (1977-10-01), Gyllenspetz et al.
patent: 4093521 (1978-06-01), Renton et al.
Abner Brenner, "Electrodeposition of Alloys", vol. I and II, pp. 118-119, and 120, (1963).

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