METHOD FOR ADJUSTING SURFACE ROUGHNESS OF STAINLESS STEEL FOR ENERGIZING MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a metal material for an energizing member having good corrosion resistance and small contact resistance (that is, excellent conductivity), especially a metal material for an energizing member having a property that a passive film of stainless steel, titanium, a titanium alloy or the like is formed, especially a metal material for a solid polymer electrolyte fuel cell separator, a separator using it and a solid polymer electrolyte fuel cell using the separator.

SOLUTION: The metal material for the energizing member wherein the average interval of local summits on the surface of the metal material having the property that the passive film is formed is 0.3 μm or less.

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