Abstract
The Bipolar Plate (BP) is a key component of Proton Exchange Membrane Fuel Cells (PEMFCs) that should contain a high electrical conductivity and corrosion resistance. In this research, Monel alloy due to higher corrosion resistance and higher ductility in comparison to other common alloys is selected as an appropriate option for metallic BPs. At first, the bare Monel alloys are exposed to oxidation condition at 120 °C and different times. The results show that the Interfacial Contact Resistance (ICR) values increase over time, due to surface oxidation necessitate surface coating of the bare alloy. Therefore, a crystalline Titanium Nitride (TiN) layer is coated on the alloy by Cathodic Arc Evaporation (CAV). The coating was performed with different roughness and thicknesses. The characterizations are performed by XRD, XRF, SEM, contact angle, ICR, and corrosion tests. It is specified that the best sample has the ICR value of 8.47 mΩ cm2 in 150 N cm−2 and corrosion rate of 0.53 μA cm−2 that is lower United States Department of Energy (DOE) values. Accordingly, TiN-coated Monel alloy can be used for BP.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
