High-temperature magnetic properties of anisotropic MnBi/NdFeB hybrid bonded magnets

Anisotropic MnBi/NdFeB （MnBi contents of 0 wt%, 20 wt%, 40 wt%, 60 wt%, 80 wt%, and 100 wt%） hybrid bonded magnets were prepared by molding compression using MnBi powders and commercial hydro-genation disproportionation desorption and recombination （HDDR） NdFeB powders. Magnetic measurements at room...

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Bibliographic Details
Published in:Rare metals 2016-06, Vol.35 (6), p.471-474
Main Authors: Zhang, Dong-Tao, Wang, Peng-Fan, Yue, Ming, Liu, Wei-Qiang, Zhang, Jiu-Xing, Sundararajan, Jennifer Anand, Qiang, You
Format: Article
Language:English
Subjects:
Anisotropy
Biomaterials
Bonding
Chemistry and Materials Science
Coefficients
Coercive force
Coercivity
Energy
Hydrogenation
Magnetic properties
Magnets
Materials Engineering
Materials Science
Metallic Materials
MnBi
Nanoscale Science and Technology
Physical Chemistry
各向异性
混合磁体
温度范围
磁性能
粘结磁体
粘结钕铁硼磁体
高温
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Summary:Anisotropic MnBi/NdFeB （MnBi contents of 0 wt%, 20 wt%, 40 wt%, 60 wt%, 80 wt%, and 100 wt%） hybrid bonded magnets were prepared by molding compression using MnBi powders and commercial hydro-genation disproportionation desorption and recombination （HDDR） NdFeB powders. Magnetic measurements at room temperature show that with MnBi content increasing, the magnetic properties of the MnBi/NdFeB hybrid bonded magnets all decrease gradually, while the density of the hybrid magnets improves almost linearly. In a temperature range of 293-398 K, the coercivity temperature coefficient of the hybrid magnets improves gradually from -0.59 %.K^-1 for the pure NdFeB bonded magnet to -0.32 %.K^-1 for the hybrid bonded magnet with 80 wt% MnBi, and the pure MnBi bonded magnet exhibits a positive coercivity temperature coefficient of 0.61%-K^-1.
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-015-0668-1