Golovata N. The character of phase equilibria and thermodynamic properties of Gd-Al-Ga, Gd-Ge-Ga and Gd-Si-Ga ternary alloys

Gd-Al-Ga, Gd-Ge-Ga, Gd-Si-Ga alloys. To investigate interaction character of the compounds of these systems. X-ray analysis and high-temperature calorimetry are methods of research. Device DRON-3 and isoperibolic calorimeter were used. The isothermal sections Gd-Al-Ga, Gd-Si-Ga (1073 K) and Gd-Ge-Ga (673 and 1073 K) of phase diagrams have been built. The crystal structure of 4 binary Gd-Ge and 6 ternary compounds have been investigated. Mixing integral enthalpies concentration dependencies for the alloys of Gd-Al(Ge,Si)-Ga ternary systems have been determined. The method based on "surrounded atom" model is proposed (suggested) for mixing integral enthalpies evaluation in ternary systems. Areas of using are physical chemistry, crystal chemistry, materials science.