Patent ID: 9093672
Filing Date: 2015-07-28
Classification: H01M,Y02E

Abstract:
1. A titanium fuel cell separator, comprising: a substrate consisting essentially of pure titanium or a titanium alloy; a carbon layer formed on a surface of the substrate; and an intermediate TiC layer formed by the reaction between titanium or a titanium alloy and a carbon layer at an interface between the substrate and the carbon layer, wherein the intermediate TiC layer is not in the form of a film but consists essentially of titanium carbide in a form of grains ranging in a direction parallel to the carbon layer, wherein the carbon layer is present in a mass of coating of from 2 μg/cm wherein the titanium carbide grains have irregular sizes and an average size of from 5 nm to less than 100 nm, and wherein the interface between the intermediate TiC layer and the carbon layer is uneven.