Bath for the electrolytic deposition of fine gold coatings

Details Bath for the electrolytic deposition of fine gold coatings Bath for the electrolytic deposition of fine gold coatings

1990-02-22

1991-10-08

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 443, C25D 348

Patent

active

050551736

ABSTRACT:
Bondable fine gold coatings are obtained from electrolytic baths which contain 2 to 100 g/l gold as alkali or ammonium gold (I)-cyanide, 0.1 mg to 5 g/l of a soluble bismuth compound, 0 to 250 g/l of a phosphonic acid, its salts, esters or simple substitution products and/or 0 to 250 g/l phosphoric acid or its salts but at least 5 g/l of phosphoric acid compound or phosphonic acid compound, and which exhibit a pH of 6 to 10.

REFERENCES:
patent: 4517060 (1985-05-01), Dettke et al.
J. D. E. McIntyre et al., J. Electrochem. Soc., vol. 123, No. 12, pp. 1800-1813, Dec. 1976.

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