MOLYBDENUM MODIFIED AISI 304 STAINLESS STEEL BIPOLAR PLATE FOR PROTON EXCHANGE MEMBRANE FUEL CELL

摘要

A molybdenum diffusion layer has been prepared on the surface of AISI 304 stainless steel (Mo-304 SS) by means of plasma surface diffusion alloying method. Xray diffraction data shows that the molybdenum modified layer of 304 SS mainly consists of cubic Mo. The results of scanning electron microscopy in combination with energy-dispersive X-ray analysis spectrometer indicate that the as-prepared molybdenum diffusion layer is -3 urn with dominant molybdenum element. A series of electrochemical evaluation tests were conducted on the Mo-304 SS specimens to determine if the Mo-304 SS is suitable to be used as PEMFC bipolar plate.