Experimental oxygen potentials for U1-yPryO2±x and thermodynamic assessment of the U-Pr-O system

JOURNAL OF NUCLEAR MATERIALS

卷:470

Article

McMurray, J. W.¹  Silva, C. M.¹ 

[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

关键词: UO2 +/- x;    Uranium;    Praseodymium;    Oxygen;    Compound energy formalism;    CALPHAD;    Oxygen potential;    Phase equilibria;   

DOI  :  10.1016/j.jnucmat.2015.11.059

来源: Elsevier

【 摘 要 】

Thermogravimetric analysis (TGA) was used to determine the oxygen potentials of fluorite uraniapraseodymia (U1-yPryO2 +/- x) solid solutions for y = 0.10 and 0.20 between 1000 and 1500 degrees C. A thermodynamic assessment of U-Pr-O system was performed using the CALPHAD (CALculation of PHAse Diagrams) method. The models well reproduce the TGA measurements and the computed phase relations are in good agreement with those proposed from an X-ray diffraction investigation. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

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