Characterization and electrochemical performance of plasma-nitrided titanium alloy for bipolar plates
Hongyu Shen,
Liang Wang
Abstract:Ti-N layer with a thickness about 1~2.2 μm was formed on titanium alloys through plasma nitriding at 750 °C in NH3 and a mixture of NH3 and N2 (1:2) for 4 h. SEM and XRD were employed to characterize the microstructure and phase composition of nitrided layer. Electrochemical tests evaluated the anti-corrosion properties of the samples before and after nitrided in a simulated proton exchange membrane fuel cells (PEMFC) environment. Interface contact resistance (ICR) was also measured. Results indicated that the… Show more
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