Preparations and Properties of Nano-Structured AlxO/i-AlCuFe as Quasicrystalline Thermoelectric Composites

J. R. Huang, Y. Takagiwa, A. P. Tsai

    Research output: Contribution to journalConference articlepeer-review


    Nano-structured AlxO/i-AlCuFe quasicrystalline composites were synthesized using spark plasma sintering. In this study, the atomized i-AlCuFe powders (nominal with Al64Cu24Fe12) were calcined at 973 K for several hours to obtain the core-shell-like structure with AlxO and i-AlCuFe. AlxO layers grew from tens to a hundred of nanometers in thickness as the calcination duration increased. In other words, the Al content decreased within the i-AlCuFe owing to the formation of AlxO. The loss of Al dominated the electron transportation behavior, which triggered an N-type to P-type transition when the Al content was below 64 at%.

    Original languageEnglish
    Article number012011
    JournalJournal of Physics: Conference Series
    Issue number1
    Publication statusPublished - 2020 Feb 10
    Event14th International Conference on Quasicrystals, ICQ 2019 - Kranjska Gora, Slovenia
    Duration: 2019 May 262019 May 30

    ASJC Scopus subject areas

    • Physics and Astronomy(all)


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