An empirical approach: estimation of enthalpy of mixing in the MCl-ReCl3 melts (M = alkali metals, Re = rare earth metals)

In the view of the physical properties an empirical approach is well develo ped for estimating enthalpy of mixing in the MCl-ReCl3 melts from experimen tal data (M = alkali metals and Re = rare earth metals). The interaction pa rameter of enthalpy of mixing at constant temperature, constant pressure an d specific composition is expressed as lambda (i) = a + bY + cY(2) + dY(3), where Y is so-called the modified relative ionic potential, related to the valence, radius of the ionic and electronegativity of relative element M o r Re. The coefficients a, b, c, d can be obtained from a multi-regression m ethod with experimental data. The calculated results by present method agre e well with the experimental data. (C) 2001 Elsevier Science B.V. All right s reserved.