Patent ID: 8088536
Filing Date: 2012-01-03
Classification: C23C,H01M,Y02E,Y02P

Abstract:
1. A method of producing a fuel cell separator, 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 a metal film; and a step of, by a vapor deposition technique, depositing the metal film on the intermediate layer, wherein a depth-direction profile showing an oxygen content in the intermediate layer has a local maximum, and wherein the local maximum occurs within the intermediate layer.