The Isothermal Section Of The Er-Mn-Nd And Pr-Fe-Sb Ternary System At 773K

Phase relations in the Er-Mn-Nd ternary system at 773K and Pr-Fe-Sb ternary system at 773K have been investigated in this work. The main contents of them were related as followed:1. The isothermal section of Er-Mn-Nd ternary system at 773KPhase relations in the Er-Mn-Nd ternary system at 773K have been investigated by means of X-ray diffraction technique and diffirrential thermal analysis. Seven binary compounds have been confirmed through our study: ErMn₂, NdMn₂ , Er₆Mn₂₃, Nd₆Mn₂₃ , ErMn₁₂ , NdMn₁₂ and δ. No ternary compound has been found at this isothermal section. According to the results of experiment, we constructed the phase diagram of Er-Mn-Nd ternary system at 773K. It consists of six three-phase regions, fourteen two-phase regions and nine single-phase regions in this isothermal section.2. The isothermal section of Pr-Fe-Sb ternary system at 773KPhase relations in the Pr-Fe-Sb ternary system at 773K have been investigated by means of X-ray diffraction technique, optical microscope method and diffirrential thermal analysis. Eight binary compounds have been confirmed through our study: PrSb₂, PrSb, Pr₄Sb₃, Pr₅Sb₃, Pr₂Sb, FeSb₂, FeSb and Fe₁₇Pr₂. Three ternary compounds Fe₁₃Pr₆Sb , Fe_1-xPrSb₂ and Fe₄PrSb₁₂ were confirmed. There may exist two new ternary compounds. One of them is FePrSb₃ and the other is ^Fe₂PrSb₂. According to the results of experiment, we constructed the phase diagram of Pr-Fe-Sb ternary system at 773K. It consists of 16 single-phase regions, 34 two-phase regions and 19 three-phase regions.