Abstract
Ferritic Fe-Cr alloy is desired as interconnect material of SOFC because of its lower cost and workability. We developed a ferritic Fe-22Cr alloy with a small addition of La and Zr which has good oxidation resistance and good electrical conductivity at 750-1000 degrees C. For further improvement, we investigated the effect of alloying elements, Ti, Nb, Zr and La, on properties of ferritic Fe-Cr alloys. From the result of this study, ferritic Fe-Cr alloy with addition of the combination of La and Zr, indicated better oxidation resistance and electrical contact resistance than that with Ti and La and that with Nb, Zr and La.
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