Patent ID: 7052794
Filing Date: 2006-05-30
Classification: H01M,Y02E,Y02P

Abstract:
1. A fuel cell separator integrated into a fuel cell and forming a fluid flow path, comprising: a separator base material having a surface; and a metal coating layer formed from a metal and formed at least on the surface of the separator base material in a region of the separator associated with electrical contact resistance between the separator and an adjacent member of the fuel cell when the separator is brought into contact with the adjacent member when the separator is integrated into the fuel cell, wherein the metal coating layer comprises crystal grains having an average grain size of 0.1 mm or more, resulting from melting and gradual cooling of the coating layer on the separator base material, and wherein the metal coating layer formed from the metal contains a substance added to the metal which reduces a melting point of the metal when added to the metal.