کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1289533 | 973302 | 2010 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Localised corrosion processes of austenitic stainless steel bipolar plates for polymer electrolyte membrane fuel cells Localised corrosion processes of austenitic stainless steel bipolar plates for polymer electrolyte membrane fuel cells](/preview/png/1289533.png)
This research addresses the problem of localised corrosion of stainless steel PEMFC bipolar plates. The susceptibility to pitting and crevice corrosion of austenitic AISI 304 stainless steel has been investigated both by post-mortem microscopic analysis of the end-plates of a laboratory single-cell and by studies of electrochemically corroded stainless steels, in the presence of specially-designed crevice-formers simulating the operating conditions of a PEMFC. This work is based on optical and scanning-electron microscopies as well as potentiostatic and potentiodynamic measurements. The crevice-formers we considered were: Teflon, graphite and AISI 304. The samples, coupled to the crevice-formers have been tested in aqueous solutions containing Cl−, SO42− and F−. From the E–log i plot, the values of corrosion, pitting, crevice and protection potential have been obtained and perfect and imperfect passivity conditions have been identified.
Journal: Journal of Power Sources - Volume 195, Issue 11, 1 June 2010, Pages 3590–3596