Volatilization of urania in steam at elevated temperatures

Kenichi Hashizume, Wei E. Wang, Donald R. Olander

    研究成果: ジャーナルへの寄稿記事

    3 引用 (Scopus)

    抄録

    The volatilization rates of urania in pure steam and in mixtures of steam and argon, steam and helium, and in steam/Ar/H2 were measured in a thermogravimetric apparatus at atmospheric pressure and temperatures from 1250 °C to 1600 °C. The objective was to clarify the kinetics and mechanism of the volatilization process and to assess the validity of existing thermodynamic data that is needed to interpret the kinetic data. The mass transfer characteristics of the system were determined independently by measuring the evaporation rates of metals of well-known vapor pressures. The measurements of urania volatilization show that the rate-controlling process is gas-phase mass transfer of uranium-bearing species such as UO3. Analysis of the volatilization data also suggests that the calculated UO3 vapor pressures are somewhat in error at the lower temperatures in the range tested.

    元の言語英語
    ページ(範囲)277-286
    ページ数10
    ジャーナルJournal of Nuclear Materials
    275
    発行部数3
    DOI
    出版物ステータス出版済み - 1 1 1999

    Fingerprint

    Uranium
    vaporizing
    Steam
    Vaporization
    steam
    uranium
    Vapor pressure
    vapor pressure
    mass transfer
    Bearings (structural)
    Mass transfer
    Well pressure
    Atmospheric temperature
    Temperature
    Helium
    atmospheric temperature
    Kinetics
    temperature
    evaporation rate
    Argon

    All Science Journal Classification (ASJC) codes

    • Nuclear and High Energy Physics
    • Materials Science(all)
    • Nuclear Energy and Engineering

    これを引用

    Volatilization of urania in steam at elevated temperatures. / Hashizume, Kenichi; Wang, Wei E.; Olander, Donald R.

    :: Journal of Nuclear Materials, 巻 275, 番号 3, 01.01.1999, p. 277-286.

    研究成果: ジャーナルへの寄稿記事

    Hashizume, Kenichi ; Wang, Wei E. ; Olander, Donald R. / Volatilization of urania in steam at elevated temperatures. :: Journal of Nuclear Materials. 1999 ; 巻 275, 番号 3. pp. 277-286.
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