C - Chemistry – Metallurgy – 25 – D
Patent
C - Chemistry, Metallurgy
25
D
C25D 17/00 (2006.01) C25D 1/04 (2006.01) C25D 17/12 (2006.01)
Patent
CA 2287536
An electrodeposition cell for electrodepositing metal onto a surface of a rotating drum that is partially immersed in an electrolytic solution. The cell includes an anode comprised of a main anode body portion and an anode extension portion. The main anode body portion has an arcuate main anode body surface having a radius of curvature slightly larger than the radius of curvature of the drum. The main anode body portion is totally immersed in the electrolytic solution adjacent the drum wherein a generally uniform gap is formed therebetween. The anode extension portion has an anode extension surface facing the drum and at least one opening extending therethrough. The anode extension portion is disposed within the electrolytic solution wherein a portion thereof extends above the electrolytic solution and the electrolytic solution can flow through the opening. A power source is connected to the main anode body portion and the anode extension portion to produce a like potential on the anode body surface and the anode extension surface, wherein the main anode body portion produces a first current density on the drum in a zone where the drum and the main anode body portion are adjacent and the anode extension portion produces a second current density on the drum in a zone where the drum and the anode extension portion are adjacent. The second current density is equal to or less than the first current density.
Briggs John C.
Clouser Sidney J.
Stevens Michael L.
Wang Jiangtao
Ga-Tek Inc. (doing Business As Gould Electronics Inc.)
Nikko Materials Usa Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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