周寿增, 唐伟忠, 王润. NdFeB系永磁体的矫顽力[J]. 工程科学学报, 1991, 13(5): 433-441. DOI: 10.13374/j.issn1001-053x.1991.05.006
引用本文: 周寿增, 唐伟忠, 王润. NdFeB系永磁体的矫顽力[J]. 工程科学学报, 1991, 13(5): 433-441. DOI: 10.13374/j.issn1001-053x.1991.05.006
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Zhou Shouzeng, Tang Weizhong, Wang Run. Coercivity of Sintered NdFeB Magnets[J]. Chinese Journal of Engineering, 1991, 13(5): 433-441. DOI: 10.13374/j.issn1001-053x.1991.05.006
Citation: Zhou Shouzeng, Tang Weizhong, Wang Run. Coercivity of Sintered NdFeB Magnets[J]. Chinese Journal of Engineering, 1991, 13(5): 433-441. DOI: 10.13374/j.issn1001-053x.1991.05.006
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NdFeB系永磁体的矫顽力

Coercivity of Sintered NdFeB Magnets

    摘要
  • 摘要: 根据TEM观察,建立了三元烧结NdFeB系永磁体的显微结构模型。运用微磁学理论对矫顽力模型作了计算,并讨论了Nd2Fe14B晶粒和NdFeB系永磁体的矫顽力。提出了烧结NdFeB系永磁体Nd2Fe14B晶粒的外延壳磁硬化理论和提高其矫顽力的途径。

     

    Abstract: Based on the observations of TEM, a microstructural model of Sintered NdFeB magnets has been found. The coercivity of the model was calcu-latedbased on micromagnetic theory and the coercivity of both Nd2Fe14B grains and sintered NdFeB magnets were analysed and discussed. A magnetic hardering theory of epitaxial layer of Nd2Fe14B grain and the way of increasing coercivity of sintered NdFeB magnets were put forward.

     

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