TITANIUM MATERIAL OR TITANIUM ALLOY MATERIAL FOR FUEL CELL SEPARATOR HAVING HIGH CONTACT CONDUCTIVITY WITH CARBON AND HIGH DURABILITY, FUEL CELL SEPARATOR INCLUDING THE SAME, AND FUEL CELL

摘要

Provided is a titanium or titanium alloy material for a fuel cell separatorhaving a surfaceshape in which a plurality of projections are distributed, and a titaniumoxide film on asurface of the projections. Fine projections are assumed to increase thecontactconductivity remarkably. The present invention has high usability in the cellmanufacturing industry.