Method of removing electrocatalytically active protective coatings from electrodes with metal cores, and the use of the method
AssigneeC. Conradty Nurnberg GmbH & Co. KG
InventorChristine Zollner geb. Moller
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Abstract
A method of removing electrocatalytically active protective coatings from electrodes with metal cores, in which a non-adhesive intermediate layer of a compound of the substrate metal is produced in a position between the protective coating and the substrate structure by means of controlled thermal treatment. By using the method, deactivated protective coatings can be removed in a particularly easy manner from electrodes with valve metal cores.
Claims14
A method of removing an electroconductive coating from a metal core electrode substrate comprising forming a non-adhesive intermediate layer of a compound of the metal substrate between the electroconductive coating and the substrate by thermally treating said electrode in a gas atmosphere containing at least a proportion of an oxygen carbon;
- nitrogen--or hydrogen yielding component or a mixture thereof and thereafter removing the electroconductive coating.
A method of removing an electrocatalytic conductive coating from a metal core electrode substrate comprising forming a non adhesive intermediate layer of a compound of the metal substrate between the electronegative coating and the substrate by anodic substrate in a non oxidizing fused salt bath at a temperature exceeding 650.degree. C., and thereafter removing the electroconductive coating.
Dependencies are inferred from the claim text.