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High temperature oxidation of AISI 441 in simulated solid oxide fuel cell anode side conditions

2022    Chyrkin, Anton; Gunduz, Kerem Ozgur; Asokan, Vijayshankar; Svensson, Jan-Erik; Froitzheim, Jan

This study investigates the corrosion of AISI 441 in simulated anode conditions of solid oxide fuel cells (SOFCs). Several parameters such as temperature, humidity, surface condition, pre-oxidation temperature and environment, were investigated. Samples pre-oxidized at 800 degrees C were protective at 550-900 degrees C, while as-received samples showed protective behavior only at 900 degrees C. Additional exposures performed at 600 degrees C revealed the negative effect of increasing steam concentration, the beneficial effect of grinding, while pre-oxidation at 600 degrees C did not improve the protectiveness. The role and the interplay of the aforementioned factors are discussed.