Electrodes of improved service life

Details Electrodes of improved service life Electrodes of improved service life

1992-06-25

1994-05-24

Gorgos, Kathryn

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204290F, 428640, 428670, 428161, C25B 1100, C25B 1102

Patent

active

053146018

ABSTRACT:
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.

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