Trivalent chromium electroplating process

Details Trivalent chromium electroplating process Trivalent chromium electroplating process

1982-01-11

1984-08-21

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

204291, 204DIG13, C25D 306

Patent

active

044668651

ABSTRACT:
A process for electrodepositing chromium on a conductive substrate employing an electrolyte containing trivalent chromium ions, a complexing agent, and hydrogen ions to provide an acidic pH in which a conductive substrate to be electroplated is immersed in the electrolyte and is cathodically charged and current is passed between the substrate and an anode at least a portion of the surfaces of which is comprised of ferrite whereby the formation of detrimental hexavalent chromium ions in the electrolyte is inhibited and the stability of the pH of the electrolyte is improved.

REFERENCES:
patent: 3954574 (1976-05-01), Gyllenspetz et al.
patent: 4093521 (1978-06-01), Renton et al.
patent: 4167460 (1979-09-01), Tomaszewski
S. Wakabayashi et al., J. De Physique, pp. C1-241-C1-244, Apr. 1977.

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