Thermodynamic assessment of Au-La and Au-Er binary systems

► It's the first time that Au-La and Au-Er binary systems were thermodynamically assessed since 1985. ► Besides, in the present work, the ab initio approach has been employed to calculate the formation enthalpies of the IMCs involved in Au-Er and Au-La binary systems, and then, by combining with all of the available experimental information, these two-system were thermodynamically optimized via CALPHAD method. Therefore, a more reliable thermodynamic description has been obtained for these systems.