Heat treatment, microstructure and coercivity of (Nd, Dy)-Fe-B based permanent magnets

Menushenkov, V. P.; Savchenko, Alexander

doi:10.1016/j.jmmm.2003.12.895

Cited by 11 publications

(1 citation statement)

References 3 publications

(3 reference statements)

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“…However, it is difficult to suppose explanation of the phenomenon of reversibility. There is hypothesis that excess phases occur transformation at the boundary of cell phase [8].…”

Section: Comparative Study Of Reversibility Of Coercivitymentioning

confidence: 99%

Study of reversibility of coercivity under heat treatment in permanent magnets

et al. 2018

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This article is aimed at observation all discussion and results that have ever been found about the phenomenon of reversibility of coercivity under heat treatments in permanent magnets including the latest researches. Despite the fundamental differences in the nature of coercivity as sensitive to structure property and magnetization reversal processes all works illustrate no changes in structure under heat treatment that causes doubts about this phenomenon.

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“…However, it is difficult to suppose explanation of the phenomenon of reversibility. There is hypothesis that excess phases occur transformation at the boundary of cell phase [8].…”

Section: Comparative Study Of Reversibility Of Coercivitymentioning

confidence: 99%

Study of reversibility of coercivity under heat treatment in permanent magnets

et al. 2018

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Microstructure and properties of low-temperature aged Dy-doped Nd-Fe-B magnet

Wang

Ding

et al. 2016

J. Cent. South Univ.

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In this work, a low temperature ageing process for the high coercivity Dy-doped Nd-Fe-B magnets was developed by the optimizing ageing process. The experimental results show that there is no difference in microstructures, crystal orientation, magnetic and mechanical properties between the low-temperature aged and the two-stage aged sintered Dy-doped Nd-Fe-B magnets. Because of the uneven stress distribution in the sintered Dy-doped Nd-Fe-B magnet and the high activation of Dy element, Dy atoms could diffuse into the main crystal phase and the grain boundary phases of the magnets during low-temperature ageing process, which results in the reasonable distribution of Dy element and formation of the thin and uniform grain boundary phases, which are the main reasons to improve intrinsic coercivity of the Dy-doped Nd-Fe-B magnets by the low-temperature ageing.

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Extraction of dysprosium from waste neodymium magnet solution with ionic liquids and ultrasound irradiation procedure

Asadollahzadeh

Torkaman

2022

Korean J. Chem. Eng.

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Heat treatment, microstructure and coercivity of (Nd, Dy)-Fe-B based permanent magnets

Cited by 11 publications

References 3 publications

Study of reversibility of coercivity under heat treatment in permanent magnets

Study of reversibility of coercivity under heat treatment in permanent magnets

Microstructure and properties of low-temperature aged Dy-doped Nd-Fe-B magnet

Extraction of dysprosium from waste neodymium magnet solution with ionic liquids and ultrasound irradiation procedure

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