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Oxidation behavior of Fe-16Cr alloy interconnect for SOFC under hydrogen potential gradient
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DOI：10.1016/j.ssi.2004.02.008.png)
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Abstract
En 中文
Iron-chromium heat-resisting alloy is a candidate for interconnect of planar-type solid oxide fuel cells (SOFC). The oxidation kinetics of Fe-16Cr alloy (SUS430) has been studied in an air/alloy/fuel (Ar-H-2-H2O gas mixture) atmosphere under a hydrogen potential gradient at 1073 K. The growth rates of chromia scale at both sides are almost the same, although oxygen partial pressures of both sides are. quite different and a small amount of hydrogen permeates from the fuel side to the air side. The growth rate and microstructure of the scale are practically unaffected by hydrogen potential gradient in Fe-16Cr alloy under the condition simulating SOFC at 1073 K. (C) 2004 Elsevier B.V. All rights reserved.
Keywords:
solid oxide fuel cells
alloy interconnect
high temperature oxidation
hydrogen potential gradient
Fe-Cr steel
chromium oxide scales
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