Effect of discrete distribution of powder size on magnetic properties of NdFeB

Jiang Hongbin; Xiao Lipeng; Wei Chengfu; Tang Jie; Zhang Lin; Zhao Daowen; Deng Shengxian

doi:10.3788/HPLPB20122405.1173

Volume 24 Issue 05

Jun. 2016

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(05): 1173-1176

Ge Meng, Wang Yong. Cold test simulation method for double-gap output circuit with double coupling apertures[J]. High Power Laser and Particle Beams, 2013, 25: 675-679. doi: 10.3788/HPLPB20132503.0675

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Jiang Hongbin, Xiao Lipeng, Wei Chengfu, et al. Effect of discrete distribution of powder size on magnetic properties of NdFeB[J]. High Power Laser and Particle Beams, 2012, 24: 1173-1176. doi: 10.3788/HPLPB20122405.1173

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Effect of discrete distribution of powder size on magnetic properties of NdFeB

doi: 10.3788/HPLPB20122405.1173

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

Received Date: 2011-08-22
Publish Date: 2012-05-15

Abstract

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 kJm-3, 0.047 T and 193.4 kAm-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.
- ndfeb magnets,
- discrete distribution,
- microstructure,
- air classification,
- hydrogenation decomposition

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