Electrolytic manner null in order to burble metallic coating from the titanium base metal base material

摘要

PURPOSE: To remove a metallic film without damaging a base metal by using as an anode and electrolyzing in an electrolyte containing an oxidation reagent having a specific composition and an acid at the time of removing the metallic film on the Ti or Ti alloy made base metal. ;CONSTITUTION: At the time of removing the coating film of TiN, TiC, TiB or a compound of a group IVB, VIB metal in periodic table, which is formed on the surface of the base metal composed of Ti or the Ti alloy, the base metal to be treated is dipped into the 50-85°C acidic electrolyte containing the oxidation reagent such as hydrogen peroxide, a perborate, peroxodiphosphate, peroxosulfate, which generates oxygen by the electrolysis with water, and the organic acid having carboxyl group, carboxy-hydroxyl group or the like to perform the electrolysis by using the base metal as the anode and impressing 6-40C DC voltage. Only the metallic compound coating film is completely removed or peeled off without damaging the base metal itself by the electrolysis.;COPYRIGHT: (C)1992,JPO