DUPLEX STAINLESS STEEL MEMBER, METHOD FOR PRODUCING THE SAME, SURFACE TREATMENT METHOD THEREFOR, SOLID POLYMER TYPE FUEL CELL, SEPARATOR THEREFOR, CONDUCTION MEMBER, AND BIODEVICE

摘要

PPROBLEM TO BE SOLVED: To provide a duplex stainless steel member having a surface layer in a form which has not been obtained heretofore. PSOLUTION: The duplex stainless steel member is made of a duplex stainless steel base material composed of fundamental elements of Cr and Ni, Fe with inevitable impurities and/or modification elements effective for improving its characteristics, and having a structure composed of an phase and a phase, and the member has a surface layer with many fine acicular rods and projecting to specified orientation, and a mother layer supporting the surface layer. The duplex stainless steel member has various applications such as a separator for a solid polymer type fuel cell and a biodevice. PCOPYRIGHT: (C)2010,JPO&INPIT