| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a separator for a fuel cell with excellent corrosion resistance and cost reduction, with contact resistance between the separator and electrodes kept at a low value under an oxidizing environment, and to provide a manufacturing method of the same. <P>SOLUTION: The separator 3 for a fuel cell is structured of a base layer 13 formed of stainless steel with Fe as a main component and containing Cr, and an element of either Ni or Mo, a first nitride layer 15 formed directly on the base layer 13 having an M<SB>4</SB>N-type crystal structure with nitrogen atoms arranged in octahedral space at the center of unit cells of face-centered cubic lattice formed by transition metal atoms selected from a group of Fe, Cr, Ni, and Mo with Fe as a main component, a second nitride layer 16 containing CrN formed on the first nitride layer 15, and an oxide layer 17 formed on the second nitride layer 16 with a thickness of 15 [nm] or less. <P>COPYRIGHT: (C)2007,JPO&INPIT |
