Method for treating stainless steel surface by high temperature oxidation.

摘要

This disclosure is concerned with a method for treating a stainless steel surface by high temperature oxidation. The surface of a stainless steel article is cleaned. Optionally, TiO2 and SiO2 are mixed as microparticles to form a coating agent, and water is added to the mixture to make a slip. The slip is coated on the steel surface to form a coating having a uniform thickness. The coating is dried and the article is subjected to a heat-treatment to form an oxide film. A desirable temperature for the heat-treatment is between 350 DEG C to 700 DEG C. When a coating agent is used, it is later removed by washing, etc.after cooling the article. Finally, a decolorization treatment is applied; that is, the colored oxide film is removed from the surface by dissolution using an acid or an electrolytic treatment.