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https://hdl.handle.net/2440/99204
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Type: | Journal article |
Title: | A ZrN nanocrystalline coating for polymer electrolyte membrane fuel cell metallic bipolar plates prepared by reactive sputter deposition |
Author: | Xu, J. Xu, S. Munroe, P. Xie, Z. |
Citation: | RSC Advances: an international journal to further the chemical sciences, 2015; 5(82):67348-67356 |
Publisher: | Royal Society of Chemistry |
Issue Date: | 2015 |
ISSN: | 2046-2069 2046-2069 |
Statement of Responsibility: | Jiang Xu, Song Xu, Paul Munroe and Zong-Han Xie |
Abstract: | To improve the surface performance and durability of 316L stainless steel (SS) used in polymer electrolyte membrane fuel cell (PEMFC) environments, a ZrN coating with an average grain size of ∼15 nm, was deposited by reactive sputter-deposition using a double glow discharge plasma technique. The corrosion behavior of the as-deposited coating was examined and compared to uncoated 316L SS in simulated PEMFC environments (i.e., 0.5 M H2SO4 + 2 ppm HF solution) by potentiodynamic and potentiostatic polarizations along with electrochemical impedance spectroscopy (EIS). The results showed that the corrosion resistance of the ZrN-coated 316L SS was significantly higher than that of uncoated material. Additionally, in comparison with uncoated 316L SS, the interfacial contact resistance (ICR) between the ZrN-coated 316L SS and the simulated gas diffusion layer (i.e., conductive carbon paper) was reduced by two orders of magnitude and remained mostly unchanged after potentiostatic polarization for 5 h. Furthermore, the average contact angle with water for the ZrN coated 316L SS (84.9°) was higher than that of uncoated material (64.4°), indicating that the ZrN-coated 316L SS is more hydrophobic. |
Rights: | This journal is © The Royal Society of Chemistry 2015 |
DOI: | 10.1039/c5ra09733a |
Grant ID: | http://purl.org/au-research/grants/arc/DP150102417 |
Published version: | http://dx.doi.org/10.1039/c5ra09733a |
Appears in Collections: | Aurora harvest 3 Mechanical Engineering publications |
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