SURFACE TREATMENT METHOD, SEPARATOR FOR FUEL CELL, AND MANUFACTURING METHOD OF SEPARATOR FOR FUEL CELL

摘要

PROBLEM TO BE SOLVED: To provide a separator for a fuel cell excellent in corrosion resistance and with durability improved.

SOLUTION: In manufacturing the separator for a fuel cell, a peripheral edge surface of an SUS-made separator base material 20 except a gas flow channel is put under cathode electrolysis treatment in alkali solution, through which an iron hydrate oxide film 24 is formed on a passive film 22 of the SUS-made separator base material 20 that is the peripheral edge surface of the SUS-made separator base material 20, and further, a water-soluble electrodeposition resin layer 26 is formed on the iron hydrate oxide film 24.

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