Oxidation Resistance and Mechanical Properties of ZMG232L and Improved Fe-Cr Ferritic Alloys for SOFC Interconnects

Abstract

Metallic materials, especially Fe-Cr ferritic alloys, are promising as interconnect materials of solid oxide fuel cells (SOFCs) operated at around medium temperatures. These metallic materials are usually machined or pressed into various shapes of interconnect parts, and thickness of these parts is often thin. However, the oxidation rate of thin sheet was much higher than that of thick one. Furthermore, higher strength at operating temperature is needed as the sheet is thinner. In this study, mechanical properties and oxidation resistance at operating temperature for ZMGTM232L and improved alloys, 232J3 and 232G10, were investigated.