Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Patent
1994-11-16
1996-08-13
Gorgos, Kathryn
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
296231, 29DIG16, 427 77, 427226, 427309, 427318, C21D 126, C22F 102
Patent
active
055452620
ABSTRACT:
A metal surface is now described having enhanced adhesion of subsequently applied coatings. The substrate metal of the article, such as a valve metal as represented by titanium, is provided with a highly desirable surface characteristic for subsequent coating application. This can be initiated by selection of a metal of desirable metallurgy and heat history, including prior heat treatment to provide surface grain boundaries which may be most readily etched. In subsequent etching operation, the surface is made to exhibit well defined, three dimensional grains with deep grain boundaries. Subsequently applied coatings, by penetrating into the etched intergranular valleys, are desirably locked onto the metal substrate surface and provide enhanced lifetime even in rugged commercial environments.
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Titanium Electrode for the Manufacture of Electrolytic Manganese Dioxide by K. Shimizu, pp. 233-236 (1970) no month available.
Titanium as a Substrate for Electrodes, by P C S Hayfield, Research & Dev. Department, IMI plc, Kynoch Works, Witton Birmingham B6 7BA England, pp. 1-11, Figures 1-13 no date available.
Carlson Richard C.
Ernes Lynne M.
Hardee Kenneth L.
Thomas David E.
Eltech Systems Corporation
Freer John J.
Gorgos Kathryn
Skrabec David J.
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