PROCESS FOR FORMING PASSIVE FILM ON STAINLESS STEEL, AND STAINLESS STEEL AND GAS- AND LIQUID-CONTACTING PART

摘要

A process for forming a passive film excellent in degasifiability and corrosion resistance by making the film extremely flat and dense. The process comprises subjecting the surface of stainless steel to electrolytic polishing, oxidation in an oxidative atmosphere and removal of iron oxide formed thereon by reduction with hydrogen.