Thermodynamic properties of Li-Sn (lithium-tin) liquid solutions

The thermodynamic partial functions of the Li in liquid alloys were measure d by electromotive force (emf) method of the concentration cell. The experi ments were carried out in the temperature range from 777 K to 975 K and for 35 alloys differing in the concentration (from 0.025 to 0.725 and from 0.9 10 to 0.954 mole fraction of Li). Using the leastsquare method the temperat ure dependence of emf's were described by the straight-line equation and ne xt partial excess Gibbs energy, excess entropy and partial heat of solution of lithium were calculated together with their errors. The temperature-con centration dependence of excess Gibbs energy of Li, in the form of Redlich- Kister equation, was worked out by the least square method. The Darken exce ss stability (ES) and the Bhatia-Thornton (BT) concentration-concentration partial structure factor Scc(0) were calculated and discussed.