Trivalent chromium electroplating solution and process

Details Trivalent chromium electroplating solution and process Trivalent chromium electroplating solution and process

1981-03-03

1983-02-15

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

C25D 306

Patent

active

043740073

ABSTRACT:
A chromium electroplating solution in which the source of chromium comprises an equilibrated aqueous solution of chromium (III) - thiocyanate complexes having supporting electrolyte consisting essentially of potassium sulphate or, preferably, a mixture of potassium and sodium sulphates. The solution is employed as the catholyte in a plating bath in which the catholyte and anolyte are separated by a cation exchange membrane. This all-sulphate bath permits the use of lead anodes, has high efficiency and a good plating range.

REFERENCES:
patent: 4141803 (1979-02-01), Barclay et al.
patent: 4161432 (1979-07-01), Barclay et al.

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