Thermodynamic re-assessment of the Fe-Dy and Fe-Tb binary systems
Source abstract
Abstract
In this work, based on the critical evaluation of previous optimizations and available experimental data in the published literature, the Fe-Dy and Fe-Tb binary systems were re-assessed thermodynamically using the CALPHAD method. The solution phases including liquid, fcc-Fe, bcc-Fe, bcc-Dy, bcc-Tb, hcp-Dy and hcp-Tb, were described by the substitutional solution model and their excess Gibbs energies were expressed with the Redlich-Kister polynomial. Due to their narrow homogeneity ranges, the intermetallic compounds, Fe17Dy2, Fe23Dy6, Fe3Dy, Fe2Dy, Fe17Tb2, Fe23Tb6, Fe3Tb and Fe2Tb, were modeled as stoichiometric compounds. Self-consistent thermodynamic parameters to describe the Gibbs energies of various phases in the Fe-Dy and Fe-Tb binary systems were obtained finally. The calculated results are in good agreement with the reported phase equilibria and thermodynamic properties.
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Research context
OpenAlex topics: Magnetic Properties of Alloys · Metallurgical and Alloy Processes · Rare-earth and actinide compounds
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (48)
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1. Advances in nanostructured permanent magnets research10.1088/0022-3727/46/4/043001 ↗
2. Structure and chemical compositions of the grain boundary phase in Nd-Fe-B sintered magnets10.1016/j.actamat.2016.05.035 ↗
3. Phase Equilibria of the Nd-Fe-B Ternary System10.1007/s11669-016-0458-y ↗
4. Effects of Dy and Nb on the magnetic properties and corrosion resistance of sintered NdFeB10.1016/j.jmmm.2004.06.006 ↗
5. Effects of Dy on magnetic properties of α-Fe/Nd2Fe14B type alloy10.1109/20.800510 ↗
6. Large-scale micromagnetic simulation of Nd-Fe-B sintered magnets with Dy-rich shell structures10.1063/1.4943058 ↗
7. Microstructural and compositional characterization of terbium-doped Nd-Fe-B sintered magnets10.1016/j.matchar.2012.02.017 ↗
8. Distribution of Dy in high-coercivity (Nd,Dy)-Fe-B sintered magnet10.1016/j.actamat.2011.01.046 ↗
9. Temperature-dependent Dy diffusion processes in Nd-Fe-B permanent magnets10.1016/j.actamat.2014.09.039 ↗
10. Optimization of the processing of Nd-Fe-B with dysprosium addition10.1016/j.jallcom.2009.10.202 ↗
11. Experimental and computational analysis of magnetization reversal in (Nd, Dy)-Fe-B core shell sintered magnets10.1016/j.actamat.2017.01.055 ↗
12. Grain boundary diffusion of different rare earth elements in Nd-Fe-B sintered magnets by experiment and FEM simulation10.1016/j.actamat.2016.11.034 ↗
13. Effect of rare earth content on TbF3 diffusion in sintered Nd-Fe-B magnets by electrophoretic deposition10.1016/j.scriptamat.2016.12.036 ↗
14. Microstructure analysis of sintered Nd-Fe-B magnets improved by Tb-vapor sorption10.2320/matertrans.48.915 ↗
15. Grain boundary structure and chemistry of Dy-diffusion processed Nd-Fe-B sintered magnets
16. Relationship between controllable preparation and microstructure of NdFeB sintered magnets10.1016/S1002-0721(14)60118-6 ↗
17. Corrosion-electrochemical properties of Fe-Nb-B amorphous alloys doped with dysprosium or terbium10.1007/s11003-015-9767-2 ↗
18. Thermodynamic assessment of Fe-Tb and Fe-Dy phase diagrams and prediction of Fe-Tb-Dy phase diagram10.1016/0925-8388(94)90261-5 ↗
19. The dysprosium-iron system: structural and magnetic properties of dysprosium-iron compounds10.1016/0022-5088(70)90113-X ↗
20. Thermodynamic assessment of Fe-Dy system
21. Enthalpies of mixing in liquid alloys of iron with the lanthanides10.3139/146.110943 ↗
22. Thermodynamics of Fe-rich intermetallics along the rare earth series10.1021/je7003353 ↗
23. The thermochemical behavior of some binary shape memory alloys by high temperature direct synthesis calorimetry10.1016/j.jallcom.2011.01.152 ↗
24. Thermodynamic measurement of Dy+Fe binary system by double Knudsen cell mass spectrometry10.1016/j.jct.2013.05.034 ↗
25. Thermodynamic modelling of Fe-Sm and Fe-Dy systems10.1179/1879139513Y.0000000080 ↗
26. Critical systematic evaluation and thermodynamic optimization of the Fe-RE system: RE=Gd, Tb, Dy, Ho, Er, Tm, Lu, and Y10.1007/s11669-017-0546-7 ↗
27. Intermetallic compounds between lantanas and transition metals of the first long period: I-preparation, existence and structural studies10.1016/0022-3697(60)90082-2 ↗
28. New compounds of rare earths with Mn and Fe, and their crystal structures
29. Magnetic properties of rare-earth-iron intermetallic compounds10.1109/TMAG.1966.1065874 ↗
30. Dy-Fe (dysprosium-iron)10.1007/BF02648376 ↗
31. Heat capacity and thermodynamic function of RFe2 compounds (R=Gd, Tb, Dy, Ho, Er, Tm, and Lu) over the temperature region 80 to 300K10.1016/0022-4596(81)90500-4 ↗
32. Thermodynamic study of the formation rare earth-transition metal laves compounds
33. Experimental investigation on the enthalpies of formation of the DyFe2, DyFe3, Dy2Fe17, ErFe2, and ErFe3 intermetallic compounds10.1007/s11661-998-0351-3 ↗
34. The standard enthalpies of formation of some binary intermetallic compounds of lanthanide-iron systems by high temperature direct synthesis calorimetry10.1016/j.jallcom.2012.11.035 ↗
35. The terbium-iron phase diagram10.1016/0022-5088(76)90200-9 ↗
36. Compounds with structures of the Th6Mn23 type in alloys of rare earth metals with Mn and Fe
37. Structural studies on materials from TbFe3 to Tb2Fe17 with aluminum substitution for iron10.1016/0022-5088(75)90062-4 ↗
38. The crystal structures of the rare-earth compounds of the form R2Ni17, R2Co17 and R2Fe1710.1016/0022-5088(66)90006-3 ↗
39. Sintering studies of rare-earth iron laves phase magnetostrictive compounds10.1016/0025-5408(76)90054-4 ↗
40. The Fe-Tb system
41. Crystal structure of compounds Fe17Gd2 and Fe17Tb210.1179/026708390790193790 ↗
42. Single-crystal growth and phase diagram of Tb2Fe17 compound10.1016/S0022-0248(00)00997-0 ↗
43. Phase equilibria at 1173K in the ternary Fe-Pt-Tb system10.1007/s11669-014-0283-0 ↗
44. Fe-Tb (Iron-Terbium)
45. SGTE data for pure elements10.1016/0364-5916(91)90030-N ↗
46. A model for alloying in ferromagnetic metals10.1016/0364-5916(78)90011-1 ↗
47. Intermetallic compounds of rare earth and 3D transition metals10.1088/0034-4885/40/10/002 ↗
48. The thermo-calc databank system10.1016/0364-5916(85)90021-5 ↗