Thermodynamic description of the Dy–Ni system

Abstract The Dy–Ni binary system has been thermodynamically assessed by means of the computer program Thermo-Calc. The Redlich–Kister polynomial was used to describe the solution phase, liquid (L). Ten compounds, Dy 3 Ni, Dy 3 Ni 2 , DyNi, DyNi 2 , DyNi 3 , Dy 2 Ni 7 , DyNi 4 , Dy 4 Ni 17 , DyNi 5 and Dy 2 Ni 7 , were treated as stoichiometric phases. The parameters of the Gibbs energy expressions were optimized according to all the available experimental information of both the equilibrium data and the thermodynamic results. A set of self-consistent thermodynamic parameters of the Dy–Ni system has been obtained. The calculations agree well with the respective experimental data.