Fabrication of stainless steel for PEMFC bipolar plate

摘要

The method for producing a stainless steel for a polymer fuel cell separator according to the present invention comprises the steps of cold-rolling a ferritic stainless steel containing 26 to 32% Cr by weight (wt%), brass annealing the cold- And electrolytically pickling the passive film formed on the surface of the cold-rolled sheet by annealing with a nitric acid solution.