METHOD FOR MANUFACTURING METALLIC MATERIAL HAVING MIXED FILM OF OXIDE AND FLUORIDE FORMED ON AT LEAST ONE PART OF SURFACE THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a method for forming a film comprising a metal oxide and a metal fluoride having both corrosion resistance and high insulation properties, on the surface of a metallic material. SOLUTION: This method is characterized by heat-treating the metallic material in an atmosphere of fluorinating gas coexisting with oxidizing gas, while vaporizing a fluoride of the metallic material. COPYRIGHT: (C)2004,JPO