کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1290729 | 973335 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates Corrosion resistance of chromized 316L stainless steel for PEMFC bipolar plates](/preview/png/1290729.png)
Corrosion resistance of the chromized 316L stainless steel was studied in a proton exchange membrane fuel cell (PEMFC) operating condition. Cr-rich surface layer was formed by pack cementation technique and electrochemical properties of the chromized surface were examined by potentiodynamic and potentiostatic tests. Results showed that the Cr-rich layers underneath the free surface passivated the surface and protect the surface from corrosion in 0.5 M H2SO4 solution at 80 °C. However, the Cr-rich layers showed columnar grains with voids when the stainless steel was pack cemented for an extended period of time, resulting in drastic degradation of corrosion resistance. The optimum condition for the best corrosion resistance in the PEMFC operating condition was obtained without sacrificing the interfacial contact resistance.
Journal: Journal of Power Sources - Volume 178, Issue 2, 1 April 2008, Pages 671–676