Journal
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
Volume 39, Issue -, Pages 1-10Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.calphad.2012.06.009
Keywords
Thermodynamic optimization and calculation; YCl3-ACl systems phase diagram; Mixing enthalpy; Rare earths; Nonlinear model
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Funding
- National Natural Science Foundation of China [20973002]
- key project of Anhui Education Committee [2005KJ016ZD]
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The binary phase diagrams of the YCl3-ACl (A = Li, Na, K, Rb, Cs) systems were studied using the CALPHAD technique and nonlinear mathematical method. The new modified quasi-chemical model in the pair-approximation for short-range ordering was applied to describe the Gibbs energies of the liquid phase in these systems. And the paper created the Artificial Neural Networks (ANN) model to study the interaction coefficients of two ending compounds composing the binary systems which are important for thermodynamic study of multi-elements system. Based on measured phase equilibrium data, a set of thermodynamic functions has been optimized and calculated. The effects of ionic radius, electronegativity and mole fraction of YCl3 on interaction coefficients were investigated in more detail. (c) 2012 Elsevier Ltd. All rights reserved.
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