| 粉末粒度离散性对NdFeB磁性能的影响 |
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| 引用本文： | 蒋宏彬,肖李鹏,魏成富,唐杰,张林,赵导文,邓盛贤.粉末粒度离散性对NdFeB磁性能的影响[J].强激光与粒子束,2012,24(5):1173-1176. |
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| 作者姓名： | 蒋宏彬 肖李鹏 魏成富 唐杰 张林 赵导文 邓盛贤 |
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| 作者单位： | 1.绵阳师范学院 物理与电子工程学院, 四川 绵阳621 000; |
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| 基金项目： | 四川省科技厅基础研究基金，四川省科技厅科技支撑计划项目，四川省教育厅重点项目，绵阳市科技局重点项目，绵阳师范学院学科专项基金 |
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| 摘 要： | 制备了一种NdFeB永磁材料，探讨了制粉前处理方式对粉末离散性、粒径及成品NdFeB永磁体结构与性能的影响。原材料经熔炼、粗破碎后，采用高速风选和高压氢爆2种制粉前处理方式，然后采用同样的成型、烧结和回火工艺制备得到(PrNd)32.3Nb0.70Al0.60Cu0.20B1.03Fe65.17合金，并系统研究了该合金的显微结构和磁性能。结果表明:高压氢爆处理后得到的粉末粒度呈单分散性，粉末粒径较细，所制备得到的磁体样品的微观结构均匀性也较好;高压氢爆处理后制得的磁体样品剩余磁通密度比高速风选制粉方式得到的磁体样品高0.047 T，内禀矫顽力高 193.4 kAm－1，最大磁能积高24.6 kJm－３。
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| 关 键 词： | NdFeB磁体 离散分布 微观结构 风选 氢爆 |
| 收稿时间： | 2011/8/22 |
Effect of discrete distribution of powder size on magnetic properties of NdFeB |
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| Jiang Hongbin
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Xiao Lipeng
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Wei Chengfu
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Tang Jie
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Zhang Lin
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Zhao Daowen
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Deng Shengxian.Effect of discrete distribution of powder size on magnetic properties of NdFeB[J].High Power Laser and Particle Beams,2012,24(5):1173-1176. |
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| Authors: | Jiang Hongbin Xiao Lipeng Wei Chengfu Tang Jie Zhang Lin Zhao Daowen Deng Shengxian |
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| Affiliation: | 1.School of Physics and Electronics Engineering,Mianyang Normal University,Mianyang 621000,China;2.Institute of Mechanical Manufacturing Technology,CAEP,Mianyang 621900,China;3.Research Center of Laser Fusion CAEP,P.O.Box 919-986-6,Mianyang 621900,China;4.Xici Magnetoelectricity Co Ltd,Mianyang 621000,China |
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| Abstract: | (PrNd)32.3Nb0.70Al0.60Cu0.20B1.03Fe65.17 (weight percent) alloys were prepared via different powdering processes, i.e. air classification(AC) and hydrogenation decomposition(HD). Their microstrutures and magnetic properties were investigated. The results show that, HD produces monodispersed fine powders, with which the magnets prepared have uniform microstructure. Moreover, the maximum magnetic energy product, remanence and intrinsic coercivity of the magnets prepared with HD-produced powders are 24.6 kJ·m-3, 0.047 T and 193.4 kA·m-1 higher than those of the magnets prepared with AC-produced powders, and thus the former magnets are better applicable to devices like laser head and magnetron. |
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| Keywords: | NdFeB magnets discrete distribution microstructure air classification hydrogenation decomposition |
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