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US 5,492,732 AGranted
Process of preparing a durable electrode by plasma spraying an intermetallic compound comprising cerium oxide and non-noble Group VIII metal
AssigneeImperial Chemical Industries PLC
InventorsEric Paul, Mary J. Mockford, Frank Rourke, Paul M. Hayes
Life of this patent
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Abstract
Provided is a process for producing a durable low hydrogen over-voltage cathode. An interim coating is applied to a metallic substrate by plasma spraying an intermetallic compound comprising at least 10% cerium oxide by x-ray diffraction analysis and at least one non-noble Group 8 metal. The metallic substrate bearing the interim coating is then heated in a non-oxidizing atmosphere including an inert gas to produce the electrode.
Claims11
A process for the preparation of a durable electrode comprising the steps of:
- (A) applying an interim coating to a metallic substrate by air plasma spraying an intermetallic compound comprising at least 10% cerium oxide by x-ray diffraction analysis and at least one non-noble Group 8 metal;
- and
- (B) heating the metallic substrate bearing the interim coating in a non-oxidizing atmosphere consisting of an inert gas to produce the durable electrode.
Dependencies are inferred from the claim text.