“…Margarian et al 10,11 observed that in Dy 3 Fe 27.5 Ti 1.4 the SEM micrographs after etching showed the majority phase to be the 3:29 phase and the remainder was Dy͑Fe,Ti) 12 phase and the depression was the 3:29 phase and the dark ͑dendritic͒ region was Fe. Sugimoto et al 12 observed that in the Sm 7.5 Fe 83.5 V 9 and Sm 7.5 Fe 85.5 V 7 , the matrix was the 3:29 phase and the dark ͑dendritic͒ regions were the ␣-Fe phase. In the first alloy, phases with gray contrast corresponding to the 1:12 phase were observed, while in the second alloy gray phases corresponding to the 2:17 phase were observed.…”
Articles you may be interested inEffects of C and Cr contents on the magnetic properties and microstructure of directly quenched NdFeTiZrCrBC bulk magnets J. Appl. Phys. 107, 09A740 (2010); 10.1063/1.3348679Effect of Ga substitution on the structure and magnetic properties of melt-spun Pr 3 ( Fe , Co , Ti ) 29 system
“…Margarian et al 10,11 observed that in Dy 3 Fe 27.5 Ti 1.4 the SEM micrographs after etching showed the majority phase to be the 3:29 phase and the remainder was Dy͑Fe,Ti) 12 phase and the depression was the 3:29 phase and the dark ͑dendritic͒ region was Fe. Sugimoto et al 12 observed that in the Sm 7.5 Fe 83.5 V 9 and Sm 7.5 Fe 85.5 V 7 , the matrix was the 3:29 phase and the dark ͑dendritic͒ regions were the ␣-Fe phase. In the first alloy, phases with gray contrast corresponding to the 1:12 phase were observed, while in the second alloy gray phases corresponding to the 2:17 phase were observed.…”
Articles you may be interested inEffects of C and Cr contents on the magnetic properties and microstructure of directly quenched NdFeTiZrCrBC bulk magnets J. Appl. Phys. 107, 09A740 (2010); 10.1063/1.3348679Effect of Ga substitution on the structure and magnetic properties of melt-spun Pr 3 ( Fe , Co , Ti ) 29 system
“…However, the coercivity of Ti-containing and V-free alloys are below ~0.65 T. Recent microstructural investigations by Schӧnhӧbel et al on the hot-deformed Sm 12 Fe 74 V 12 Cu 2 magnets prepared from mechanically alloyed powders showed that the formation of Sm-rich and Fe-lean grain boundary phase is responsible for realizing coercivity [ 51 ]. In the ternary-phase diagram of Sm–Fe–V at 1100°C shown in Figure 13(a ), the 1–12 phase is in equilibrium with a 3–29 and an Sm-rich liquid phase [ 62 ]. Hence, an Sm-rich grain boundary phase was observed in the 1–12 magnet with V as the stabilizing element.…”
Section: Recent Progress In Bulk Magnets In Rt
12
-Based Systemsmentioning
confidence: 99%
“… Remanent magnetization versus coercivity µ 0 H c of various SmFe 12 -based compounds with various stabilizing elements [ 56–60 ] Figure 13. Phase diagrams of (a) Sm-Fe-V [ 62 ] and (b) Sm-Fe-Ti [ 28 ] …”
Section: Recent Progress In Bulk Magnets In Rt
12
-Based Systemsmentioning
To realize a sustainable society, "green technology" with low (or even zero) CO 2 emissions, is required. A key material in such technology is a permanent magnet because it is utilized for electric-power conversion in several applications including electric vehicles (EVs), hybrid EVs (HEVs), and turbines for wind power generation. To realize highly efficient electric-power conversion, a stronger permanent magnet than Nd-Fe-B is necessary. One potential candidate is a Fe-rich SmFe 12 -based compound with a ThMn 12 structure. In this paper, the phase stability, structure, and intrinsic and extrinsic magnetic properties in both film and bulk forms are reviewed. Based on these results, a possible way to realize a strong SmFe 12 -based permanent magnet in bulk form is discussed.
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