Coalescent-jet apparatus and method for high current density pre

Details Coalescent-jet apparatus and method for high current density pre Coalescent-jet apparatus and method for high current density pre

1975-04-21

1976-06-15

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204224R, 204DIG7, B23K 2800, C25D 502

Patent

active

039635880

ABSTRACT:
A process and apparatus for the high current density electroplating of recessed configurations such as inside corners or depressions. The apparatus employs a housing member, the front face of which has a number of closely spaced ports for the discharge of electrolyte jets which impinge upon the recessed configuration. The anode, supported within the housing, is non-consumable so as to prevent soluble anode products from depositing within the recessed configuration. Uniform plating is achieved by a new principle termed "coalescent jets" which requires a critical correlation between (i) the applied voltage, (ii) the force of the electrolyte jets, (iii) the size of the ports, (iv) the distance between ports and (v) the distance between the front face of the housing and the recessed configuration undergoing electroplating.

REFERENCES:
patent: 1416929 (1922-05-01), Bailey
patent: 2695269 (1954-11-01), De Witz et al.
patent: 2750332 (1956-06-01), Miller
patent: 3809642 (1974-05-01), Bond et al.

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