| Effects of quenching speed and Joule heating on the magnetic properties of Nd9Fe86B5 ribbons |
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| 基金项目： | This work was financially supported by the Hi-Tech Research and Development Program (863 Program) of China (No. 2002AA302602 and No. 2001AA324010). |
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| 摘 要： | 1 IntroductionNanocomposite two-phase magnets are an im-portant type of permanent magnetic materials that have attracted much attention in recent years. Com-bining the high coercive force of the hard magnetic phase and the large saturation magnetization o…
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| 关 键 词： | 铌铁硼合金 熔化旋转带状物 交换耦合 淬火速度 焦耳加热 磁性 纳米两相磁体 |
Effects of quenching speed and Joule heating on the magnetic properties of Nd9Fe86B5 ribbons |
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| AN Kang,HU Jifan,WANG Dongling,Qin Hongwei,Sun Guangfei,CHEN Jufang,YU Xiaojun,LI Bo. Effects of quenching speed and Joule heating on the magnetic properties of Nd9Fe86B5 ribbons[J]. Rare Metals, 2005, 24(2): 157-160 |
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| Authors: | AN Kang HU Jifan WANG Dongling Qin Hongwei Sun Guangfei CHEN Jufang YU Xiaojun LI Bo |
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| Abstract: | The influences of quenching speed and current annealing on the magnetic properties of Nd9Fe86B5 ribbons were investigated. There is an optimum quenching speed (v ≈ 15 m/s) for preparing hard magnetic ribbons, where the remanence of 1.22 T, the intrinsic coercivity of 521 kA.m1 and the energy products of 150 kJ.m-3 are obtained. After annealing ribbons prepared with v = 20 m/s at a dc current of 0.85 A, the remanence reaches a quite large value of 1.47 T, which attributes to the strong exchange coupling interactions between the fine grains of Nd2Fe14B and α-Fe. |
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| Keywords: | NdFeB melt-spun ribbon dc current annealing exchange coupling |
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