| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an austenitic stainless steel which is superior in leaching resistance, keeps a low contact-resistance of the surface for a long period of time, and is suitable for a separator of a fuel cell such as a polymer-electrolyte type, and to provide the separator of the fuel cell. <P>SOLUTION: The austenitic stainless steel to be used for the separator of the polymer-electrolyte fuel cell includes 16.0-35.0 mass% Cr; and has a passive film on the surface. The passive film includes one or more elements of Cr, Nb, Ti, Al, Zr, V and B in a total amount of 3 atom% or more, which exist as a nitride, and Si and Mn in a total amount (Si+Mn) of 50 atom% or less, which compose an oxide. <P>COPYRIGHT: (C)2007,JPO&INPIT |
