METHOD FOR MANUFACTURING CORROSION RESISTANT AND CONDUCTIVE NANO CARBON COATING LAYER AND FUEL CELL BIPOLAR PLATE THEREBY USING STAINLESS STEEL SUBSTRATE

摘要

The present invention proposed manufacturing method of coating layers with good conductivity and corrosion resistance at high productivity comprising etching the oxide layer on the stainless steel substrate by plasma etching to activate the surface and prevent from decreasing it's conductivity, coating metal nitrides like CrN or TiN in nano size thickness on the etched surface and coating carbon layer at nano size thickness on top of it. According to the present invention, it is possible to produce manufacture fuel cell bipolar plate, electrode material and stainless steel with reinforced conductivity and corrosion resistance in mass.

主权项

1. Manufacturing method of nano carbon coating layer having corrosion resistance and conductivity comprise three steps of (1) etching the oxide layer of stainless steel substrate, (2) depositing metal nitride buffer layer in nano size thickness on the etched surface and (3) depositing conductive carbon layer on the above buffer layer in nano size thickness.