Electrolytic deposition and recovery of silver

Details Electrolytic deposition and recovery of silver Electrolytic deposition and recovery of silver

1991-11-29

1993-02-02

Walsh, Donald P.

Electrolysis: processes, compositions used therein, and methods

Electrolytic coating

Depositing predominantly single metal coating

C25D 346

Patent

active

H00011363

ABSTRACT:
A method for electroplating sliver is described which comprises a plating and/or stripping solution of an alkali hydroxide and ethylenediamine having a basic pH in the range of about 7.5 to 13, and having an ethylenediamine concentration of about 5 to 33% by volume, the electroplating (at the cathode) and/or stripping (at the anode) being performed with an applied DC potential across the electrodes of about 2 to 6 volts.

REFERENCES:
patent: 3238112 (1966-03-01), Haslam
patent: 3362895 (1968-01-01), Foulke
patent: 3915718 (1975-10-01), Ludwig et al.
patent: 4021319 (1977-05-01), Moeglich
patent: 4111766 (1978-09-01), Idota et al.
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patent: 4377449 (1983-03-01), Kohl
patent: 4478691 (1984-10-01), Abys
patent: 4652465 (1987-03-01), Koto et al.
"Electroplating Baths for Silver", Natarajan et al., Metal Finishing (Feb. 1991).
"Stripping of Nickel Deposits with Ethylene Diamine", Natarajan et al., Metal Finishing (Dec. 1984).
Chemical Abstract: 81:85272k, Oct. 7, 1974.
Chemical Abstract 95: 158643h, Nov. 2, 1981.

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