Electrode with anode active layer

Details Electrode with anode active layer Electrode with anode active layer

1983-10-11

1985-05-07

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204189, 427125, 4271265, 502101, C25B 1100

Patent

active

045156735

ABSTRACT:
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 gives enhanced corrosion resistance and acid undermining resistance to titanium substrates and eases the manufacture of painted and fired niobium substrate electrodes.
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.

REFERENCES:
patent: 3443055 (1969-05-01), Gwynn
patent: 3540994 (1970-11-01), Napier
patent: 3547600 (1970-12-01), Gwynn
patent: 3711397 (1973-01-01), Martinsons

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