Development of New alloys for SOFC Interconnects with Excellent Oxidation Resistance and Reduced Cr-evaporation

Metallic materials, especially Fe-Cr ferritic alloys (ex. ZMG (TM) 232L), are promising as interconnect materials of solid oxide fuel cells (SOFCs) operated at medium temperatures such as 700-850 degrees C. For these alloys, good oxidation resistance and good electrical conductivity in thin sheets are required. Moreover, it is needed to reduce Cr evaporation, which causes degradation of the cell, from oxidized alloy surface. In this study, the effect of chemical composition on required properties at elevated temperature was investigated and new alloys for SOFC Interconnects were developed.