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

摘要

Provided is a trivalent chromium-plated film structure having excellent appearance, corrosion resistance, and abrasion resistance. Also provided is a treatment step that can be used industrially. A method for producing a trivalent chromium-plated molded article in which the surface of a molded article is plated comprises (a) a step for forming a copper plating film on the surface of a molded article by lustrous copper sulfate plating, (b) a step for preparing a trivalent chromium plating bath comprising trivalent chromium ions and a complexing agent, wherein the complexing agent content ratio is 0.1 to 2 mol/L, and (c) a step for 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 greater.