C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/195.2, 204/2
C25C 7/02 (2006.01) C25B 11/04 (2006.01) C25C 1/00 (2006.01)
Patent
CA 1153731
ABSTRACT A composite electrode especially suitable for electrowinning processes comprising an electrically con- ductive substrate having on at least a part of its surface a multilayer coating, said coating comprising: a) a barrier layer directly on the substrate; b) a ruthenium dioxide-containing non-electrodeposited surface layer; and c) between the barrier layer and the surface layer, an intermediate layer consisting of an electroplated ru- thenium-iridium deposit, said ruthenium-iridium deposit being at least partially in an oxidized state.
330104
Borner William G.
Mcewen James
Scarpellino Anthony J.
Inco Limited
Smart & Biggar
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