Trivalent chromium electroplating solution and bath

Details Trivalent chromium electroplating solution and bath Trivalent chromium electroplating solution and bath

C - Chemistry, Metallurgy

25

D

204/35

C25D 3/06 (2006.01)

Patent

CA 1214426

ABSTRACT TRIVALENT CHROMIUM ELECTROPLATING SOLUTION AND BATH A chromium electroplating solution in which the source of chromium is an aqueous solution of chromium (III) complexes. The complexes are selected from a solution of chromium (III) and at least one of aspartic acid or an organic compound having a -C=S group or a -C-S- group. A supporting electrolyte is chloride free and comprises a mixture of sodium and potassium sulphates in a concentration sufficient to provide electrical conductivity for the plating process. The concentration of sodium sulphate is in the range of about 0.1 to 1 Molar and the concentration of potassium sulphate is about 1 Molar.

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