Finite size melting of spherical solid-liquid aluminium interfaces

J. Chang, Erik Johnson, T. Sakai, H. Saka

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    We have investigated the melting of nano-sized cone shaped aluminium needles coated with amorphous carbon using transmission electron microscopy. The interface between solid and liquid aluminium was found to have spherical topology. For needles with fixed apex angle, the depressed melting temperature of this spherical interface, with radius R, was found to scale linearly with the inverse radius 1/R. However, by varying the apex angle of the needles we show that the proportionality constant between the depressed melting temperature and the inverse radius changes significantly. This led us to the conclusion that the depressed melting temperature is not controlled solely by the inverse radius 1/R. Instead, we found a direct relation between the depressed melting temperature and the ratio between the solid-liquid interface area and the molten volume.
    Original languageEnglish
    JournalPhilosophical Magazine
    Volume89
    Issue number7
    Pages (from-to)595 - 604
    ISSN1478-6435
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Materials characterization and modelling
    • Materials research

    Cite this

    Chang, J. ; Johnson, Erik ; Sakai, T. ; Saka, H. / Finite size melting of spherical solid-liquid aluminium interfaces. In: Philosophical Magazine. 2009 ; Vol. 89, No. 7. pp. 595 - 604.
    @article{191b4dfe62c2475eba3a71fb9270b722,
    title = "Finite size melting of spherical solid-liquid aluminium interfaces",
    abstract = "We have investigated the melting of nano-sized cone shaped aluminium needles coated with amorphous carbon using transmission electron microscopy. The interface between solid and liquid aluminium was found to have spherical topology. For needles with fixed apex angle, the depressed melting temperature of this spherical interface, with radius R, was found to scale linearly with the inverse radius 1/R. However, by varying the apex angle of the needles we show that the proportionality constant between the depressed melting temperature and the inverse radius changes significantly. This led us to the conclusion that the depressed melting temperature is not controlled solely by the inverse radius 1/R. Instead, we found a direct relation between the depressed melting temperature and the ratio between the solid-liquid interface area and the molten volume.",
    keywords = "Materials characterization and modelling, Materials research, Materialeforskning, Materialekarakterisering og materialemodellering",
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    Finite size melting of spherical solid-liquid aluminium interfaces. / Chang, J.; Johnson, Erik; Sakai, T.; Saka, H.

    In: Philosophical Magazine, Vol. 89, No. 7, 2009, p. 595 - 604.

    Research output: Contribution to journalJournal articleResearchpeer-review

    TY - JOUR

    T1 - Finite size melting of spherical solid-liquid aluminium interfaces

    AU - Chang, J.

    AU - Johnson, Erik

    AU - Sakai, T.

    AU - Saka, H.

    PY - 2009

    Y1 - 2009

    N2 - We have investigated the melting of nano-sized cone shaped aluminium needles coated with amorphous carbon using transmission electron microscopy. The interface between solid and liquid aluminium was found to have spherical topology. For needles with fixed apex angle, the depressed melting temperature of this spherical interface, with radius R, was found to scale linearly with the inverse radius 1/R. However, by varying the apex angle of the needles we show that the proportionality constant between the depressed melting temperature and the inverse radius changes significantly. This led us to the conclusion that the depressed melting temperature is not controlled solely by the inverse radius 1/R. Instead, we found a direct relation between the depressed melting temperature and the ratio between the solid-liquid interface area and the molten volume.

    AB - We have investigated the melting of nano-sized cone shaped aluminium needles coated with amorphous carbon using transmission electron microscopy. The interface between solid and liquid aluminium was found to have spherical topology. For needles with fixed apex angle, the depressed melting temperature of this spherical interface, with radius R, was found to scale linearly with the inverse radius 1/R. However, by varying the apex angle of the needles we show that the proportionality constant between the depressed melting temperature and the inverse radius changes significantly. This led us to the conclusion that the depressed melting temperature is not controlled solely by the inverse radius 1/R. Instead, we found a direct relation between the depressed melting temperature and the ratio between the solid-liquid interface area and the molten volume.

    KW - Materials characterization and modelling

    KW - Materials research

    KW - Materialeforskning

    KW - Materialekarakterisering og materialemodellering

    U2 - 10.1080/14786430902720952

    DO - 10.1080/14786430902720952

    M3 - Journal article

    VL - 89

    SP - 595

    EP - 604

    JO - Philosophical Magazine

    JF - Philosophical Magazine

    SN - 1478-6435

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    ER -