C - Chemistry – Metallurgy – 25 – B
Patent
C - Chemistry, Metallurgy
25
B
C25B 11/10 (2006.01) C23C 4/02 (2006.01) C23C 4/06 (2006.01) C23C 8/02 (2006.01) C23C 26/00 (2006.01) C23C 28/00 (2006.01) C23F 1/00 (2006.01) C25B 11/00 (2006.01) C25C 7/02 (2006.01) C25D 17/10 (2006.01)
Patent
CA 2097789
ELECTRODES OF IMPROVED SERVICE LIFE Abstract of the Disclosure A metal surface is now described having enhanced adhesion of subsequently applied coatings combined with excellent coating service life. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable rough surface characteristic for subsequent coating application. This can be achieved by various operations including etching and melt spray application of metal or ceramic oxide to ensure a roughened surface morphology. Usually in subsequent operations a barrier layer is provided on the surface of enhanced morphology. This may be achieved by operations including heating, as well as including thermal decomposition of a layer precursor. Subsequent coatings provide enhanced lifetime even in the most rugged commercial environments.
Carlson Richard
Ernes Lynne M.
Hardee Kenneth L.
Eltech Systems Corporation
Gowling Lafleur Henderson Llp
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