METHOD FOR PRODUCING TRIVALENT CHROMIUM PLATED-MOLDED ARTICLE AND TRIVALENT CHROMIUM-PLATED MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide a trivalent chromium-plated film structure having excellent in appearance, corrosion resistance and abrasion resistance and to provide a treatment process that can be industrially used.;SOLUTION: The method for producing a trivalent chromium-plated molded article by plating the surface of a molded article includes the steps as given below: (a) a step of forming a copper plating film on the surface of a molded article by lustrous copper sulfate plating; (b) a step of preparing a trivalent chromium plating bath comprising trivalent chromium ions and a complexing agent the content ratio of which is 0.1 to 2 mol/L; and (c) a step of forming a trivalent chromium plating film on the surface of the copper plating film by performing trivalent chromium plating using the trivalent chromium plating bath, with the carbon content in the trivalent chromium plating film being 3 at% or more.;COPYRIGHT: (C)2014,JPO&INPIT