METAL SEPARATOR FOR FUEL CELL AND MANUFACTURING METHOD THEREOF

摘要

Disclosed is a metal separator for fuel cells which comprises a metal plate; a conductive coating layer covering at least one of the front and back surfaces of the metal plate which is in contact with a raw material and/or a reaction product; and a conductive channel-forming member which is arranged on the surface of the coating layer and forms a flow channel for the raw material and/or reaction product and/or a flow channel for a cooling medium. The surface layer of the metal plate has a tensile residual stress within such a range that no stress corrosion cracking occurs.