Dimensionally stable anode for molten salt electrowinning...

Details Dimensionally stable anode for molten salt electrowinning... Dimensionally stable anode for molten salt electrowinning...

C - Chemistry, Metallurgy

25

C

204/23, 204/195.

C25C 3/00 (2006.01) C25C 3/12 (2006.01) C25C 7/02 (2006.01) C25D 3/66 (2006.01) C25D 9/06 (2006.01)

Patent

CA 1283883

ABSTRACT The morphology of a coating of Ce oxyfluoride on a conductive substrate is improved by doping with yttrium, lanthanum, praseodymium and,or other rare earth metals other than cerium. Whereas the pure Ce-oxycompound coating shows cracks which frequently extend throughout the entire thickness of the coating, thus exposing finite portions of the substrate to eventual corrosive attack from the environment, the improved coating including the above doping element(s) comprises a substantially impervious structure. Coatings of this nature may be employed with non-consumable anodes in molten aluminum electrowinning cells or as chemical sensors, corrosion protection and other applications.

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