Thermodynamic investigations in the solid state of the lanthanum–magnesium–zinc system

International audienceThe LaeMgeZn phase diagram is experimentally investigated at 595 K, x La > 4% and the corresponding isothermal section is partially determined. This section includes 5 substitutional solid solutions based on the binary compounds (LaMg, LaZn, LaMg 3 , LaMg 10.3 and La 2 Zn 17) and three ternary phase (La 8 (Mg,Zn) 92 , La 3 (Mg,Zn) 11 and La 4.27 Mg 2.89 Zn 30). The enthalpies of mixing in the ternary solid solutions are calculated at 298 K on the basis of tin solution calorimetry experiments