| 摘要 |
PROBLEM TO BE SOLVED: To attain good corrosion resistance, good conductivity and low contact resistance even under the strong acid environment by using a stainless steel as a base material, and forming a cover layer made of one or two or more kinds of silicon carbide, boron carbide and titanium carbide on its surface. SOLUTION: The surface of a stainless steel base material is covered with a conductive ceramic mainly made of a carbide. One or two or more kinds of silicon carbide(SiC), boron carbide (B4 C or B12 C3 ) and titanium carbide(TiC) are combined as the carbide. The compositions of these carbides are identified by the diffraction method, they are not limited to the strict stoichiometric compositions expressed by chemical formulae, and the composition range has some width. These carbides contain inevitable impurities mingled during the generation process. One or two kinds of nitrogen and oxygen of 10 mass % or below are contained in the carbide cover layer to improve the conductivity of the cover layer itself. |
