Coercivity Enhancement of Sintered NdFeB Magnets by Intergranular Adding Micro-Structured DyNdPrAlCu Powder

被引：0
作者：
Thanh, Pham Thi [1 ,2 ]
Ngoc, Nguyen Huy [1 ,2 ]
Hau, Kieu Xuan [1 ,2 ]
Yen, Nguyen Hai [1 ,2 ]
Anh, Truong Viet [1 ]
Dan, Nguyen Huy [1 ,2 ]
机构：
[1] Vietnam Acad Sci & Technol, Inst Mat Sci, 18 Hoang Quoc Viet, Hanoi, Vietnam
[2] Vietnam Acad Sci & Technol, Grad Univ Sci & Technol, 18 Hoang Quoc Viet, Hanoi, Vietnam
来源：
MATERIALS TRANSACTIONS | 2023年 / 64卷 / 08期
关键词：
sintered Nd-Fe-B magnet; anisotropic magnet; rare earth magnet; high coercivity; maximum energy products; FE-B MAGNETS; ND-CU-AL; THERMAL-STABILITY; CORROSION-RESISTANCE; PERMANENT-MAGNETS; DY; MICROSTRUCTURE; IMPROVEMENT; INCREMENT; MECHANISM;
D O I：
10.2320/matertrans.MT-M2023023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, microstructure and magnetic properties of sintered Nd16.5Fe77B6.5 magnets with intergranular addition of Dy30Nd17Pr3Al40Cu10 were investigated. The additional particles with size in the range of 1-2 mu m were homogeneously mixed into micrometer Nd16.5Fe77B6.5 master powder with different weight fractions. The investigation shows that coercivity Hc of the added magnets significantly increases, while their remanence Br decreases with increasing Dy30Nd17Pr3Al40Cu10 additional fraction. The coercivity of the magnets increases from 14.5 kOe to 31.5 kOe with increasing the additional fraction from 0 to 9 wt.%. By adding Dy30Nd17Pr3Al40Cu10 compound to grain boundary, the Dy concentration can be reduced by 60 wt.% in comparison with the conventional method. [doi:10.2320/matertrans.MT-M2023023]
引用
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页码：1924 / 1929
页数：6
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