Bath and process for the electrodeposition of chromium

Details Bath and process for the electrodeposition of chromium Bath and process for the electrodeposition of chromium

1982-11-01

1984-09-18

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

C25D 306

Patent

active

044722508

ABSTRACT:
A trivalent chromium electroplating solution containing trivalent chromium ions, a complexant, a buffer and thiocyanate ions. The thiocyanate is of a molar concentration which is lower than the molar concentration of the chromium ions, and the chromium ion concentration being lower than 0.1 M. The stability constant, K.sub.1, of the solution's chromium complex is in the range 10.sup.8 <K.sub.1 <10.sup.12 M.sup.-1.

REFERENCES:
patent: 4062737 (1977-12-01), Barclay et al.
patent: 4161432 (1979-07-01), Barclay et al.
patent: 4256548 (1981-03-01), Barclay et al.
patent: 4278512 (1981-07-01), Barclay et al.

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