Pulse electrodepositing method

Chemistry: electrical and wave energy – Processes and products

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204 451, 204 49, 204 52R, 204DIG9, C25D 518

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active

044964366

ABSTRACT:
Electrodeposition is carried out using an electric current which is applied in the form of pulses between a workpiece and an electrode in an electrolyte from which metal is to be deposited upon the workpiece. The pulses have a pulse duration not greater than 100 microseconds and the pulse duration is preferably between 1-50 microseconds while the off time or interval between adjacent pulses is more than twice as long as the on time of the pulses.

REFERENCES:
patent: 2726202 (1955-12-01), Rockafellow
patent: 3959088 (1976-05-01), Sullivan
patent: 4049507 (1977-09-01), Tokumoto et al.
V. A. Lamb, Plating, vol. 56, No. 8, pp. 909-913, (1969).
A. Kenneth Graham, "Electroplating Engineering Handbook", pp. 573-574, (1955).
W. A. Wesley et al., Reprint from 36th Annual Proc., Am. Electroplaters Soc., pp. 79-91, (1949).
C. C. Wan et al., Plating, pp. 559-564, Jun. 1974.
Heinz W. Dettner et al., "Handbuch der Galvano-Technik", vol. 1, Part 1, p. 135, (1963).
W. Sullivan, Plating, vol. 62, No. 2, pp. 139-141, (1975).

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