全高丰度稀土<strong>(Ce, La, Y)-Fe-B</strong>永磁的研究现状和未来发展

全高丰度稀土(Ce, La, Y)-Fe-B永磁的研究现状和未来发展

刘仲武, 周帮, 廖雪峰, 何家毅

Research Status and Future Development of (Ce, La, Y)-Fe-B Permanent Magnets Based on Full High-Abundance Rare Earth Elements

LIU Zhongwu, ZHOU Bang, LIAO Xuefeng, HE Jiayi

图6 (Ce_{1 -}_x La _x )Fe₂相的形成能、(Ce_{1 -}_x La _x )₁₇Fe₇₈B₆快淬合金的XRD精修图谱^[42]以及Ce₁₇Fe_{78 -}_x B₆Si _x^[55]和Ce₁₆Fe_{78 -}_x B₆Ge _x 快淬合金的退磁曲线^[74]

Fig.6 Calculated formation energiesfor (Ce_{1 -}_x La _x )Fe₂ phase (Inset shows the schematic illustration of the cubic CeFe₂ crystal) (a), XRD refinement spectra for (Ce_{1 -}_x La _x )₁₇Fe₇₈B₆ alloys^[42] (b), demagnetization curves for the as-spun Ce₁₇Fe_{78 -}_x B₆Si _x (Insets in Fig.6c show the microstructure evolutions of Ce₁₇Fe_{78 -}_x B₆Si _x alloys)^[55] (c) and Ce₁₆Fe_{78 -}_x B₆Ge _x alloys (Inset shows the HRTEM image of Ce₁₆Fe_77.8B₆Ge_0.2 alloy)^[74] (d)