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enthalpy of uo2

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Create . The effect of additions of 3 mass% and 5 mass% Gd 2 O 3 on the heat capacity (Cp) and enthalpy of urania for temperatures between 298 and 1800 K has been determined using differential-scanning calorimetry and drop calorimetry. Prior to 1960, it was used as yellow and black color in ceramic glazes and glass. By continuing you agree to the use of cookies. A mixture of uranium and plutonium dioxides is used as MOX fuel. 2005-03-26. We use cookies to improve your website experience. Register to receive personalised research and resources by email, Smoothed Values of the Enthalpy and Heat Capacity of UO, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87544. Keiji Naito, High-temperature heat capacities of UO2 and doped UO2, Journal of Nuclear Materials, 10.1016/0022-3115(89)90422-4, 167, (30-35), (1989). It is used in nuclear fuel rods in nuclear reactors. UO2 enthalpy data measured by five different investigators were fitted to a theoretically based equation from room temperature to the melting point. 4 Spectral Information Expand this section. Copyright © 2020 Elsevier B.V. or its licensors or contributors. 1 Structures Expand this section. 3099067 Dates: Modify . Uranium dioxide is a ceramic refractory uranium compound, in many cases used as a nuclear fuel. UO2enthalpy data measured by five different investigators were fitted to a theoretically based equation from room temperature to the melting point. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. 2 Names and Identifiers Expand this section. Gittus, J.R. Matthews, P.E. EINECS 215-700-3. dioxouranium. Registered in England & Wales No. Two of the constants in the equation are related to properties of the UO2lattice. Contents. 2020-11-07. Estimated heat capacities for the gadolinium-doped samples were found to be within ± 3% of the measured values. The equation can be used to calculate enthalpy, and differentiated to obtain heat capacity in this temperature range. Crossref. Heat capacity values of UO2 and U1-xGd xO2 obtained in the present investigation are in good agreement with data recorded in the literature. More... Molecular Weight: 270.028 g/mol. To learn about our use of cookies and how you can manage your cookie settings, please see our Cookie Policy. Uranium oxide (UO2) 1344-57-6. Additions of Gd2O3 to UO2 appear to lower the temperature for the commencement of the upturn in the Cp(UO2)-temperature curve. The equation can be used to calculate enthalpy, and differentiated to obtain heat capacity in this temperature range. Uranium dioxide or uranium(IV) oxide (UO2), also known as urania or uranous oxide, is an oxide of uranium, and is a black, radioactive, crystalline powder that naturally occurs in the mineral uraninite. 5 Howick Place | London | SW1P 1WG. J.H. Copyright © 1989 Published by Elsevier B.V. https://doi.org/10.1016/0040-6031(89)87014-5. Two of the constants in the equation are related to properties of the UO2 lattice. The effect of additions of 3 mass% and 5 mass% Gd2O3 on the heat capacity (Cp) and enthalpy of urania for temperatures between 298 and 1800 K has been determined using differential-scanning calorimetry and drop calorimetry. We use cookies to help provide and enhance our service and tailor content and ads. 5 Related Records Expand this section. Most of LWRs use the uranium fuel, which is in the form of uranium dioxide (chemically UO 2).Uranium dioxide is a black semiconducting solid with very low thermal conductivity. By closing this message, you are consenting to our use of cookies. 3 Chemical and Physical Properties Expand this section.

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