Chemistry: electrical and wave energy – Processes and products
Patent
1986-09-25
1987-06-02
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
204 28, C25D 362
Patent
active
046701079
ABSTRACT:
In the electrodeposition of gold by electrolyzing an aqueous solution containing potassium gold cyanide, the improvement which comprises including in the solution a critical concentration of formic acid, a phosphonic acid type chelating agent and a cobalt or nickel compound, at a critical pH, to achieve extremely rapid plating speeds. Relatively high plating temperatures in the range of about 90.degree. to 160.degree. F. and high current densities ranging up to about 1000 ASF may be used to achieve fast plating speeds without degradation of the quality of the deposit.
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Kaplan G. L.
Klauber Stefan J.
Vanguard Research Associates, Inc.
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