Investigations of metallic alloys for use as interconnects in solid oxide fuel cell stacks

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    Abstract

    Some high-temperature alloys have been investigated in order to determine whether they are suitable as metallic interconnect materials in solid oxide fuel cell stacks. The requirements for such alloys are formulated. Thermal dilatometry and oxidation tests, as well as theoretical calculations of the stresses that are induced by differences in thermal expansion of the individual materials, have been performed. The results show that a chromium-rich alloy, with dispersions of fine Y2O3 particles, perform best among the samples investigated. Improvements are still needed in order to make the alloy fully applicable in a solid oxide fuel cell stack. Some suggestions for improvements are put forward.
    Original languageEnglish
    JournalJournal of Materials Science
    Volume31
    Issue number19
    Pages (from-to)5077-5082
    ISSN0022-2461
    DOIs
    Publication statusPublished - 1996

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