Abstract
A Ni-Cr enriched layer about 60 nm thick with improved conductivity is formed on the surface of austenitic stainless steel 316L (SS316L) by ion implantation. The electrochemistry results reveal that a proper Ni-Cr implant fluence can greatly improve the corrosion resistance of SS316L in the simulated PEMFC environment. The samples after the potentiostatic test are also analyzed by XPS and the ICR values are measured. The XPS results indicate that the composition of the passive film change from a mixture of Fe oxides and Cr oxide to a Cr oxide dominated passive film after the potentiostatic test. Hence, the ICR increases after polarization due to depletion of iron in the passive film. Nickel is enriched in the passive film formed in the simulated PEMFC cathode environment after ion implantation thereby providing better conductivity than that formed in the anode one. © 2009 Professor T. Nejat Veziroglu.
| Original language | English |
|---|---|
| Pages (from-to) | 690-700 |
| Journal | International Journal of Hydrogen Energy |
| Volume | 35 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 2010 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Research Keywords
- Bipolar plate
- Corrosion resistance
- Ion implantation
- Polymer electrolyte membrane fuel cells
- Stainless steel 316L
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