Magnetic properties of Nd2Fe14B/α-Fe nanocomposite magnets with yttrium addition
来源期刊：Rare Metals2010年第3期
论文作者：CHEN Zhi’ana,SUI Yanlib,and GUO Zhimenga a Institute of Powder Metallurgy,University of Science and Technology Beijing,Beijing ,China b State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing ,China
文章页码：265 - 269
摘 要：The phase evolution and magnetic properties of Nd9?xYxFe72Ti2Zr2B15 （x = 0,0.5,1,and 2） melt-spun nanocomposite ribbons were studied.It is found that Y addition not only enhances the formability of amorphous phase in the alloy,but also stabilizes the amorphous phase during the annealing treatment.The appropriate content of Y addition effectively enhances the remanence （Jr） of the annealed sample.The residual amorphous intergranular phase in the annealed sample optimizes the squareness of the loop,resulting in an larger maximum energy product （BH）max.The best magnetic properties,Jr = 0.78 T,Hci （coercivity） = 923.4 kA/m,and （BH）max = 98.5 kJ/m3,were obtained from the Nd8YFe72Ti2Zr2B15 ribbon spun at Vs = 4 m/s and annealed at 700°C for 10 min,which is composed of Nd2Fe14B,α-Fe,and amorphous phase.
CHEN Zhi’ana,SUI Yanlib,and GUO Zhimenga a Institute of Powder Metallurgy,University of Science and Technology Beijing,Beijing 100083,China b State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China
摘 要：The phase evolution and magnetic properties of Nd9?xYxFe72Ti2Zr2B15 （x = 0,0.5,1,and 2） melt-spun nanocomposite ribbons were studied.It is found that Y addition not only enhances the formability of amorphous phase in the alloy,but also stabilizes the amorphous phase during the annealing treatment.The appropriate content of Y addition effectively enhances the remanence （Jr） of the annealed sample.The residual amorphous intergranular phase in the annealed sample optimizes the squareness of the loop,resulting in an larger maximum energy product （BH）max.The best magnetic properties,Jr = 0.78 T,Hci （coercivity） = 923.4 kA/m,and （BH）max = 98.5 kJ/m3,were obtained from the Nd8YFe72Ti2Zr2B15 ribbon spun at Vs = 4 m/s and annealed at 700°C for 10 min,which is composed of Nd2Fe14B,α-Fe,and amorphous phase.
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