Recently, [2004Tak] studied the feasibility of Nd extraction from B-Fe-Nd magnet scrap, using molten Ag as the extraction medium. During this study, they determined an isothermal section for the Ag-Fe-Nd system at 1090 deg C.Binary SystemsThe Ag-Fe phase diagram [Massalski2] shows very limited solubility between Ag and Fe in both the liquid and solid states. The Ag-Nd phase diagram [Massalski2] depicts several intermediate phases: Ag_51Nd_14 is hexagonal, beta Ag_2Nd is AlB_2-type hexagonal, alpha Ag_2Nd is CeCu_2-type orthorhombic, and AgNd is a CsCl-type cubic phase. None of these phases are stable at the temperature of interest here (1090 deg C). The Fe-Nd phase diagram [1997Oka] depicts two intermediate compounds: Fe_17Nd_2 (Th_2Zn_17-type rhombohedral) and Fe_17Nd_5 (hexagonal).
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