METAL MEMBER HAVING CORROSION-RESISTANT CONDUCTIVE COATING AND PROCESS FOR PRODUCING THE SAME

摘要

A metal member comprising a metal base and, superimposed on its surface, a corrosion-resistant conductive coating wherein the maximum (L) of major diameters of second-phase compounds observed at the surface of metal base is 5/6-fold or less of the thickness of corrosion-resistant conductive coating (T) (L <= 5/6 T); and a process for producing a metal member which comprises subjecting a metal base to a zinc immersion treatment wherein zinc immersion is carried out after acid cleaning four times or more and thereafter forming a corrosion-resistant conductive coating on a surface of the metal base. In particular, a metal member having a corrosion-resistant conductive coating that can be used in a metal separator for fuel cell or an electrode of fuel cell, these being useful for fuel cell production; and a process for producing the same.