Anisotropic thermal properties of talc under high temperature and pressure

Akira Yoneda, Mitsuhide Yonehara, Masahiro Osako

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    The anisotropic thermal conductivity and diffusivity of talc were simultaneously measured up to 5.3. GPa and 900. K using the pulse transient method. Although significant anisotropy was observed in the thermal conductivity of talc, the average thermal conductivity is comparable to that of olivine and roughly three times greater than that of antigorite. From the ratio of the thermal conductivity to the thermal diffusivity, the heat capacity of talc was evaluated. The pressure derivative of heat capacity was found to be positive, which is related to the anomaly of thermal expansivity of talc above 50°C at atmospheric pressure.

    Original languageEnglish
    Pages (from-to)10-14
    Number of pages5
    JournalPhysics of the Earth and Planetary Interiors
    Volume190-191
    DOIs
    Publication statusPublished - Jan 2012

    Keywords

    • Antigorite
    • Heat capacity
    • Hydrous mineral
    • Phyllosilicate
    • Talc
    • Thermal conductivity
    • Thermal diffusivity

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Geophysics
    • Physics and Astronomy (miscellaneous)
    • Space and Planetary Science

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