a Laboratoire de Chimie Métallurgique des Terres Rares, ISCSA, CNRS, UPR 209, 2-8 rue Henri Dunant, F-94320, Thiais Cedex, France
b Calcul Thermodynamique, 3 rue de l'Avenir, F-63670, Orcet, France
Abstract:
The μ phase has been studied in different systems (Ta–Ni, Mo–Co, Nb–Ni) as a function of the composition. In addition, its stability in the Mn–Si system has been investigated. The atom distribution on the five different sites of the crystal structure has been obtained from Rietveld refinement of X-ray powder diffraction data. These experimental data are compared to the values computed from first principles results and from existing Calphad assessments of the different systems. Conclusions are drawn concerning the model to be chosen for describing this phase.