Patent ID: 8338058

Claim:
A separator for a fuel cell, comprising: a base formed of a steel which contains 10.5 mass % or more of Cr; a metal film formed on a surface of the base; and an intermediate layer formed between the base and the metal film, the intermediate layer containing oxygen, wherein the metal film is composed of at least one metallic element selected from the group consisting of Ta, Nb, and Ti, and the intermediate layer contains Fe and Cr which are contained in the steel and at least one metallic element selected from the group consisting of Ta, Nb, and Ti composing the metal film, wherein the separator for the fuel cell is formed by a method comprising: a step of providing a base formed of a steel which contains 10.5 mass % or more of Cr, with an oxide layer being formed on at least a portion of a surface thereof, the oxide layer containing oxides of Fe and Cr; a step of, through an ion bombard process, removing a portion of the oxide layer so as to leave a portion of the oxide layer; a step of forming an intermediate layer containing an element contained in the oxide layer and an element composing the metal film; and a step of, by a vapor deposition technique, depositing a metal film on the intermediate layer, a step of, through an ion bombard process, removing the metal film and a portion of the intermediate layer so as to leave a portion of the intermediate layer; and a step of, by a vapor deposition technique, depositing a metal film on the portion of the intermediate layer.