The Thermal Analysis in a MA-8 Type Apparatus: The Melting of Gold at 12 GPa

T. Sumita, M. Kato, A. Yoneda

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    3 Citations (Scopus)

    Abstract

    High pressure thermal analysis and differential thermal analysis have been developed for detecting phase transitions in an MA-8 type apparatus. By using these methods, the melting and freezing of gold was investigated at 12 GPa. We observed the latent heat signal of gold both on melting and freezing processes, and determined the melting temperature at 1868±10 K. This temperature is lower by about 60 K than the extrapolation of the previous experiments by using the Kraut-Kennedy equation. We interpreted this discrepancy to be due to the pressure effect on the emf of the W-3%Re/W-25%Re thermocouple.

    Original languageEnglish
    Pages (from-to)254-256
    Number of pages3
    JournalReview of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
    Volume7
    DOIs
    Publication statusPublished - 1998

    Keywords

    • gold
    • high pressure
    • phase transition
    • pressure effect on the thermocouple emf
    • thermal analysis

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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