Abstract
Iron-based rare-earth ternary alloys with a high energy product came into prominence recently as permanent magnetic materials. Also, a large number of iron-based ternary phase diagrams were critically evaluated and published recently as monographs under the auspices of the International Programme for Alloy Phase Diagram Data. This review presents a brief comparison of the data on crystal structures of ternary compounds and the corresponding phase diagrams for a number of ternary iron rare-earth (RE) X series: B-Fe-RE, C-Fe-RE, Fe-N-RE, Al-Fe-RE, Co-Fe-RE, Fe-Ni-RE, and Fe-RE(1)-RE(2). It is hoped that this exercise will aid in pinpointing discrepancies and planning future investigations on ternary compounds and phase equilibria in unexplored systems.
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