Durability and characterization studies of chromium carbide coated aluminum fuel cell stack
By Hung, Y.; Tawfik, H.; Mahajan, D.
Published in International Journal of Hydrogen Energy
NULL
2016
Abstract
Abstract Corrosion and interfacial contact resistance measurements were performed on chromium carbide coated aluminum 6061 and as-received aluminum 6061 samples. The coating was thermally sprayed onto the aluminum sample using the High Velocity Oxygen Fuel (HVOF) thermal spray technique. The chromium carbide coating consists of Cr3C2 top layer and CrCNi intermediate layer. The coating thickness was approximately 150 ?m. A three-cell stack with chromium carbide coated aluminum bipolar plates was also fabricated for the durability and characterization studies. The coating thicknesses on the lands of the ribs and the walls of the valleys were approximately 300 ?m and 150 ?m, respectively. The stack was operated at the temperatures of 37
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