Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 671-676 |
| Number of pages | 6 |
| Journal | Journal of Power Sources |
| Volume | 178 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2008 Apr 1 |
Bibliographical note
Funding Information:This work was supported by the grants from the Seoul R&BD Program at Korea University.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Bipolar plates
- Chromizing
- Corrosion
- PEM fuel cell
- Stainless steel
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering
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