Method for manufacturing porous metal body

Abstract

An object of the present invention is to inexpensively provide a porous metal body which is usable for an electrode of a fuel cell or the like and which has excellent corrosion resistance. There is provided a porous metal body for a fuel cell, which is a sheet-shaped porous metal body, including at least nickel, tin, and chromium, in which the chromium concentration of at least one surface of the porous metal body is 3% to 50% by mass. In the porous metal body, preferably, the chromium concentration of one surface is higher than the chromium concentration of another surface.

1 - 3 . (canceled) 
     
     
         4 . A method for manufacturing a porous metal body for a fuel cell comprising:
 a step of forming a tin plating layer by tin plating on a sheet-shaped porous metal body which includes at least nickel; and   a step of forming a chromium plating layer by chromium plating on at least one surface of the porous metal body which has been provided with the tin plating layer.   
     
     
         5 . (canceled) 
     
     
         6 . The method for manufacturing a porous metal body according to  claim 4 , further comprising a step of heat-treating the porous metal body after the chromium plating layer has been formed thereon or the porous metal body including nickel and tin before the chromium plating layer is formed thereon. 
     
     
         7 . (canceled)