Abstract
Existing models for calculation of thermal conductivity of uranium dioxide are analyzed. Anomalous growth of the thermal conductivity coefficient of nuclear fuel in the high-temperature region is explained. Models of specific heat at constant volume and thermal conductivity are proposed. It is demonstrated that the contribution of degrees of freedom of charge carriers to the observed thermal conductivity coefficient of admixture-free stoichiometric UO2 can be neglected up to the melting point.
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Original Russian Text © Yu.N. Devyatko, V.V. Novikov, O.V. Khomyakov, D.A. Chulkin, 2015, published in Fizika i Khimiya Obrabotki Materialov, 2015, No. 4, pp. 70–81.
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Devyatko, Y.N., Novikov, V.V., Khomyakov, O.V. et al. A model of uranium dioxide thermal conductivity. Inorg. Mater. Appl. Res. 7, 409–418 (2016). https://doi.org/10.1134/S2075113316030059
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DOI: https://doi.org/10.1134/S2075113316030059