Preferential thermal nitridation to form pin-hole free Cr-nitrides to protect proton exchange membrane fuel cell metallic bipolar plates
- 30 April 2004
- journal article
- Published by Elsevier BV in Scripta Materialia
- Vol. 50 (7), 1017-1022
- https://doi.org/10.1016/j.scriptamat.2003.12.028
Abstract
Preferential thermal nitridation was used to form a pin-hole defect free CrN/Cr2N surface on a model Ni–Cr alloy. Excellent corrosion resistance and negligible contact resistance increase was observed over a 4100 h exposure in 80 °C sulfuric acid and when used as a metallic bipolar plate in a 1000 h proton exchange membrane (PEM) fuel cell test.Keywords
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