Silver-electroplating process

Details Silver-electroplating process Silver-electroplating process

1978-08-29

1979-12-04

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

106 126, 204 43R, 204 46R, C25D 534

Patent

active

041771141

ABSTRACT:
A process for silver-plating, which comprises steps of preplating a substrate material in an aqueous preplating solution comprising 10.sup.-5 to 0.02 mole/l of silver and more than 0.01 mole/l of a silver complexing agent such as thiocyanic ions under non-current density, to preplate a sufficient thickness of silver to restrain or substantially prevent substitution plating, and then electroplating the preplated substrate material until a sufficient thickness by supplying an electric current to said material in an aqueous silver plating solution comprising silver ions, thiocyanic ions and a film improving agent.

REFERENCES:
patent: 3362895 (1968-01-01), Foulke
patent: 3984290 (1976-10-01), Kitaey et al.

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