Abstract
In the context of the development of the IVTANTHERMO information and reference system, heat capacity equations have been derived for solid and liquid stoichiometric uranium dioxide in the temperature ranges of 298.15–3130 K and 3130–8000 K, respectively, on the basis of an analysis of experimental data available in the literature. The appearance of new experimental data on the UO2 enthalpy and heat capacity up to 8000 K made it necessary to recalculate the temperature dependences of the heat capacity. The refined values of thermodynamic functions (heat capacities, entropy, enthalpy increments, and the reduced Gibbs energy) obtained by numerical integration of these equations in a range of 100–8000 K have been entered into the IVTANTHERMO database.
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