ИСТИНА

In this work, we studied thermodynamic properties of alloys of lutetium with tellurium (Gibbs energy ( ), enthalpies ( ) and entropy of formation ( )) in an area to 40 at. % Lu and temperature interval from 592 to 738 K using the electromotive force (EMF) method. An electrochemical cell with a salt melt electrolyte can be presented schematically as: (-) (LuIn2.5)sol + In liq |Lu3+ in electrolyte| LuxTe1-x (+) (I) The value of a chemical potential of such a cell can be expressed by a ratio △μA= -nFE; n=3; F=96485.3 C/mol The standard integral thermodynamic functions of the formation Li2Te3 phase were determined dGf298= -151.54 kJ/ mol-at; dHf298= -152.62 kJ/ mol-at; dSf298= - 3.62 J/(mol-at K);