METHOD FOR MANUFACTURING CORROSION RESISTANT AND CONDUCTIVE NANO CARBON COATING LAYER AND FUEL CELL BIPOLAR PLATE THEREBY USING STAINLESS STEEL SUBSTRATE
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United States of America Patent
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Oct 16, 2015
filing date -
Jan 22, 2013
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Abstract
The present invention proposed manufacturing device 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.
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