Coercivity and thermal stability enhancement of NdFeB magnet by grain boundary diffusion Tb80Al20 alloys

Toujun Zhou; Yi Guo; Guoqiang Xie; Sajjad Ur Rehman; Renhui Liu; Junrui Liu; Pengpeng Qu; Mianfu Li

doi:10.1016/j.intermet.2021.107335

Coercivity and thermal stability enhancement of NdFeB magnet by grain boundary diffusion Tb₈₀Al₂₀ alloys

Toujun Zhou
, Yi Guo
, Guoqiang Xie^*
, Sajjad Ur Rehman
, Renhui Liu^*
, Junrui Liu
, Pengpeng Qu
, Mianfu Li

^*Corresponding author for this work

Harbin Institute of Technology (Shenzhen)
Jiangxi University of Science and Technology
Ltd.

Research output: Contribution to journal › Article › peer-review

59 Scopus citations

Abstract

Grain boundary diffusion of Tb and Al elements can improve the coercivity and optimize grain boundary of NdFeB magnets. In this paper, we investigated magnetic property and microstructure evolution of sintered NdFeB magnets by grain boundary diffusion Tb₈₀Al₂₀ alloys. The coercivity and thermal stability of the magnets were effectively improved. Microstructural analysis confirmed the formation of Tb-rich shells and continuous grain boundary, contributing to coercivity enhancement of magnet. The element distribution and diffusion mechanism of the magnets have been disused. This work may shed light on developing low heavy rare earth sintered NdFeB magnets.

Original language	English
Article number	107335
Journal	Intermetallics
Volume	138
DOIs	https://doi.org/10.1016/j.intermet.2021.107335
State	Published - Nov 2021
Externally published	Yes

Keywords

Coercivity
Grain boundary diffusion
Microstructural evolution
Sintered NdFeB magnets
Thermal stability

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10.1016/j.intermet.2021.107335

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title = "Coercivity and thermal stability enhancement of NdFeB magnet by grain boundary diffusion Tb80Al20 alloys",

abstract = "Grain boundary diffusion of Tb and Al elements can improve the coercivity and optimize grain boundary of NdFeB magnets. In this paper, we investigated magnetic property and microstructure evolution of sintered NdFeB magnets by grain boundary diffusion Tb80Al20 alloys. The coercivity and thermal stability of the magnets were effectively improved. Microstructural analysis confirmed the formation of Tb-rich shells and continuous grain boundary, contributing to coercivity enhancement of magnet. The element distribution and diffusion mechanism of the magnets have been disused. This work may shed light on developing low heavy rare earth sintered NdFeB magnets.",

keywords = "Coercivity, Grain boundary diffusion, Microstructural evolution, Sintered NdFeB magnets, Thermal stability",

author = "Toujun Zhou and Yi Guo and Guoqiang Xie and Rehman, \{Sajjad Ur\} and Renhui Liu and Junrui Liu and Pengpeng Qu and Mianfu Li",

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year = "2021",

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doi = "10.1016/j.intermet.2021.107335",

language = "英语",

volume = "138",

journal = "Intermetallics",

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TY - JOUR

T1 - Coercivity and thermal stability enhancement of NdFeB magnet by grain boundary diffusion Tb80Al20 alloys

AU - Zhou, Toujun

AU - Guo, Yi

AU - Xie, Guoqiang

AU - Rehman, Sajjad Ur

AU - Liu, Renhui

AU - Liu, Junrui

AU - Qu, Pengpeng

AU - Li, Mianfu

PY - 2021/11

Y1 - 2021/11

N2 - Grain boundary diffusion of Tb and Al elements can improve the coercivity and optimize grain boundary of NdFeB magnets. In this paper, we investigated magnetic property and microstructure evolution of sintered NdFeB magnets by grain boundary diffusion Tb80Al20 alloys. The coercivity and thermal stability of the magnets were effectively improved. Microstructural analysis confirmed the formation of Tb-rich shells and continuous grain boundary, contributing to coercivity enhancement of magnet. The element distribution and diffusion mechanism of the magnets have been disused. This work may shed light on developing low heavy rare earth sintered NdFeB magnets.

AB - Grain boundary diffusion of Tb and Al elements can improve the coercivity and optimize grain boundary of NdFeB magnets. In this paper, we investigated magnetic property and microstructure evolution of sintered NdFeB magnets by grain boundary diffusion Tb80Al20 alloys. The coercivity and thermal stability of the magnets were effectively improved. Microstructural analysis confirmed the formation of Tb-rich shells and continuous grain boundary, contributing to coercivity enhancement of magnet. The element distribution and diffusion mechanism of the magnets have been disused. This work may shed light on developing low heavy rare earth sintered NdFeB magnets.

KW - Coercivity

KW - Grain boundary diffusion

KW - Microstructural evolution

KW - Sintered NdFeB magnets

KW - Thermal stability

UR - https://www.scopus.com/pages/publications/85113292038

U2 - 10.1016/j.intermet.2021.107335

DO - 10.1016/j.intermet.2021.107335

M3 - 文章

AN - SCOPUS:85113292038

SN - 0966-9795

VL - 138

JO - Intermetallics

JF - Intermetallics

M1 - 107335

ER -

Coercivity and thermal stability enhancement of NdFeB magnet by grain boundary diffusion Tb₈₀Al₂₀ alloys

Abstract

Keywords

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