In low temperature SOFC stacks, oxidation resistant alloys such as ferritic stainless steels have been proposed as candidate materials for the interconnect, which is simultaneously exposed to a fuel on the anode side and an oxidant on the cathode side. The corrosion behavior of ferritic stainless steels under these dual atmosphere exposure conditions was investigated in a specifically designed apparatus. It was discovered that, under the simultaneous exposure, the oxide scale formed on the airside of the sample was significantly different from scales formed when the alloy was exposed to air only. It appeared that the anomalous corrosion behavior during the simultaneous dual exposure was due to hydrogen transport through the bulk alloy from the fuel side to the air side.
Revised: June 29, 2011 |
Published: July 23, 2003
Citation
Yang Z., M.S. Walker, P. Singh, and J.W. Stevenson. 2003.Anomalous Corrosion Behavior of Stainless Steels under SOFC Interconnect Exposure Conditions.Electrochemical and Solid-State Letters 6, no. 10:B35-B37.PNNL-SA-38224.