C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
117/111, 204/188
C23F 13/00 (2006.01) C23F 13/02 (2006.01) C25B 11/02 (2006.01) C25B 11/04 (2006.01) C25C 7/02 (2006.01)
Patent
CA 1253456
9549-68 ABSTRACT OF THE DISCLOSURE A titanium or niobium electrode substrate (which may be copper or steel cored) having on its surface a painted and fired anodically active layer for example of a platinum group metal, there being an interlayer of tantalum or an alloy containing more than 50% tantalum in metallic form between the anodically active layer and the substrate. The tantalum metal eases the manufacture of painted and fired niobium substrate electrodes, and provides to titanium substrates an enhanced resistance to acid undermining. The electrode may be an elongate rod having longitudinally extending protuberances along the length of the rod and around the circumference, the spacing and height of the protuberances being such that a straight line connecting the peaks of two adjacent protuberances does not intersect with the body of the electrode so that the protuberances protect the anodically active coating from damage during installation and operation of the electrode.
439685
Ineos Chlor Limited
Smart & Biggar
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