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Thermodynamic Database and the Phase Diagrams of the (U,Th, Pu)-X Binary Systems
Authors:C P Wang  Z S Li  W Fang  X J Liu
Affiliation:(1) Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, P.R. China;(2) Research Center of Materials Design and Applications, Xiamen University, Xiamen, 361005, P.R. China;
Abstract:A thermodynamic database for nuclear materials, including U-Th, U-Pu, Th-Pu, and (U, Th, Pu)-X (X = Al, Co, Cr, Cu, Fe, Ga, Mg, Mn, Mo, Nb, Ni, Si, Ta, W, Zr) binary system has been developed by the Calculation of Phase Diagrams (CALPHAD) method. Thermodynamic parameters describing Gibbs free energies of different phases have been evaluated by optimizing experimental data on phase equilibria and thermodynamic properties. The present thermodynamic database can provide much-needed information such as stable and metastable phase equilibria, phase fractions, and various thermodynamic quantities that is important to the design of nuclear materials. This database is also an essential starting point to construct thermodynamic databases for the multicomponent systems.
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