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Rare Metals

Erschienen in:

04.09.2015

Relation between microstructure and magnetic properties of shock wave-compressed Nd–Fe–B magnets

verfasst von: Ming-Gang Zhu, Yan-Feng Li, Wei Li, Li-Yun Zheng, Dong Zhou, Hai-Bo Feng, Lang Chen, An Du

Erschienen in: Rare Metals | Ausgabe 7/2022

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Abstract

The relationship between the microstructure and magnetic properties of Nd–Fe–B sintered magnet compressed by shock wave with 6.26 GPa ≤ p ≤ 7.16 GPa was investigated. It reveals that Nd–Fe–B magnets show a demagnetization behavior after compressed by shock wave. The intergranular fracture is the main occurring phenomenon in the shock wave-compressed magnets. The coercivity of the shock wave-compressed Nd–Fe–B magnets could be recovered after repeating the annealing process. It suggests that only the morphology change just like the intergranular fracture occurs, and there is no structural change in the grain boundary phase in the shock wave-compressed magnet. Matrix phase grain interconnection, microcracks and pores, and alterant orientation relationship between matrix phase and grain boundaries phase are considered as induced factors of demagnetization.

Vorheriger Artikel Structural transformation and magnetic properties of Sm–Fe alloys with V doping

Nächster Artikel Microstructures and grain refinement performance of Al–Ti–B–C grain refiner via powder metallurgy

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Titel: Relation between microstructure and magnetic properties of shock wave-compressed Nd–Fe–B magnets
verfasst von: Ming-Gang Zhu
Yan-Feng Li
Wei Li
Li-Yun Zheng
Dong Zhou
Hai-Bo Feng
Lang Chen
An Du
Publikationsdatum: 04.09.2015
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 7/2022
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-015-0587-1

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