Effect of multicomponent Tb-Cu films diffusion on the magnetic properties and thermal stability of sintered Nd-Fe-B magnets

被引：15
作者：
Zhan, Hao [1 ]
Wang, Yinan [1 ]
Peng, Chuanxiao [1 ]
Yu, Juntao [1 ]
Wang, Zilong [2 ]
Hu, Jiakai [1 ]
Bai, Xinyuan [3 ]
Luo, Yang [2 ]
Wang, Li [1 ]
机构：
[1] Shandong Univ, Sch Mech Elect & Informat Engn, Weihai 264209, Peoples R China
[2] GRINM Grp Co Ltd, Natl Engn Res Ctr Rare Earth, Beijing 100088, Peoples R China
[3] Grirem Rongcheng Co Ltd, Weihai 264200, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2023年 / 945卷
关键词：
Nd-Fe-B magnets; Grain boundary diffusion process; Layered deposition; Heavy rare earth; Demagnetization; GRAIN-BOUNDARY; NDFEB MAGNETS; MICROSTRUCTURAL CHARACTERISTICS; COERCIVITY; DY; MECHANISM; MOTORS;
D O I：
10.1016/j.jallcom.2023.169303
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In order to improve the diffusion characteristics of heavy rare earth in the grain boundary, effects of the diffusion process as well as the ratio of Tb and Cu (RTb/Cu) during the layered deposition process on the magnetic properties of Tb-Cu diffused Nd-Fe-B magnets were systematically investigated. The coercivity of the diffused magnet with RTb/Cu = 4:1 was enhanced most, which increased from 10.86 kOe to 21.80 kOe. Cu greatly improved the composition homogenization of diffused magnets. For the present designed diffused magnet, the highest utilization efficiency of Tb reached 43.96 kOe/wt%. Moreover, the reduced demagne-tization risk of sintered Nd-Fe-B magnets was verified by using finite element method based on the ex-perimentally obtained temperature characteristics of the magnet.(c) 2023 Elsevier B.V. All rights reserved.
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页数：10
相关论文
共 41 条
[1]   Magnetic and microstructural characteristics of DyF3/DyHx dip-coated Nd-Fe-B sintered magnets [J].
Bae, Kyoung-Hoon ;
Kim, Tae-Hoon ;
Lee, Seong-Rae ;
Kim, Hyo-Jun ;
Lee, Min-Woo ;
Jang, Tae-Suk .
JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 612 :183-188
[2]   Grain-size effect on coercivity of Nd-Fe-B nanomagnets: micromagnetics simulation based on a multi-grain model [J].
Bao, Lingbo ;
Yun, Guohong ;
Bai, Narsu ;
Cao, Yongjun .
APPLIED PHYSICS EXPRESS, 2021, 14 (08)
[3]   Impact of TbF3 diffusion on coercivity and microstructure in sintered Nd-Fe-B magnets by electrophoretic deposition [J].
Cao, Xuejing ;
Chen, Ling ;
Guo, Shuai ;
Chen, Renjie ;
Yan, Gaolin ;
Yan, Aru .
SCRIPTA MATERIALIA, 2016, 116 :40-43
[4]  
Chaudhary V., 2022, NANO, V17
[5]   Coercivity enhancement of the sintered Nd-Ce-Fe-B magnet via grain boundary diffusion with Tb70Fe30 alloy [J].
Du, Ruihua ;
Chen, Renjie ;
Ding, Guangfei ;
Fan, Xiaodong ;
Tang, Xu ;
Cao, Shuai ;
Guo, Shuai ;
Yan, Aru ;
Liu, Xincai .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2022, 551
[6]   Recycling of NdFeB Magnets from Electric Drive Motors of (Hybrid) Electric Vehicles [J].
Elwert, Tobias ;
Goldmann, Daniel ;
Roemer, Felix ;
Schwarz, Sabrina .
JOURNAL OF SUSTAINABLE METALLURGY, 2017, 3 (01) :108-121
[7]   Effect of Rare-Earth Content on Coercivity and Temperature Stability of Sintered Nd-Fe-B Magnets Prepared by Dual-Alloy Method [J].
Fu, Wenbiao ;
Guo, Shuai ;
Lin, Chaowei ;
Chen, Renjie ;
Liu, Xincai ;
Lee, Don ;
Yan, Aru .
IEEE TRANSACTIONS ON MAGNETICS, 2013, 49 (07) :3258-3261
[8]   Investigation on the grain boundary diffusion of Dy2O3 film prepared by electrophoretic deposition for sintered Nd-Fe-B magnets [J].
Guan, Y. W. ;
Huang, Y. L. ;
Rao, Q. ;
Li, W. ;
Hou, Y. H. ;
Luo, J. M. ;
Pang, Z. S. ;
Mao, H. Y. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 857
[9]   Reducing the process consumption of Tb in grain boundary diffusion of Nd-Fe-B magnets by sputtering deposition instead of adhesive coating [J].
He, Jiayi ;
Cao, Jiali ;
Hu, Jinwen ;
Yu, Zhigao ;
Zhang, Xuhang ;
Yu, Hongya ;
Mao, Huayun ;
Liu, Zhongwu .
JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 928
[10]   Grain Boundary Diffusion Sources and Their Coating Methods for Nd-Fe-B Permanent Magnets [J].
He, Jiayi ;
Cao, Jiali ;
Yu, Zhigao ;
Song, Wenyue ;
Yu, Hongya ;
Hussain, Mozaffar ;
Liu, Zhongwu .
METALS, 2021, 11 (09)
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