High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet

It is well known that the high temperature magnetic properties of traditional Sm2Co17-based magnets can be further improved through adjustment of chemical composition and technique process. The Hcj of Sm(CobalFe0.1Cu0.09Zr0.03)z (z=7.0-7.3) magnets fluctuate over a large range at the variation of Sm...

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Main Authors:	Chao Wang, Nengjun Yu, Minggang Zhu, Yikun Fang, Shuai Wang, Wei Li
Format:	Article
Language:	English
Published:	AIP Publishing LLC 2019-12-01
Series:	AIP Advances
Online Access:	http://dx.doi.org/10.1063/1.5129687

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record_format	Article
spelling	doaj-0be2f3cd38184eaeac5d35359e1049a72020-11-25T01:54:56ZengAIP Publishing LLCAIP Advances2158-32262019-12-01912125237125237-710.1063/1.5129687High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnetChao Wang0Nengjun Yu1Minggang Zhu2Yikun Fang3Shuai Wang4Wei Li5Division of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaDivision of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaDivision of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaDivision of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaDivision of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaDivision of Functional Materials, Central Iron and Steel Research Institute, Beijing 100081, ChinaIt is well known that the high temperature magnetic properties of traditional Sm2Co17-based magnets can be further improved through adjustment of chemical composition and technique process. The Hcj of Sm(CobalFe0.1Cu0.09Zr0.03)z (z=7.0-7.3) magnets fluctuate over a large range at the variation of Sm content, and Sm(CobalFe0.1Cu0.09Zr0.03)7.2 magnet shows excellent magnetic properties as (BH)max of 22.5 MGOe, Hcj of 28.3 kOe and Br of 9.65 kG at room temperature respectively. Meantime through optimization of solid solution conditions, the Sm(CobalFe0.1Cu0.09Zr0.03)7.2 magnets possess excellent magnetic properties as Br=7.22 kG, Hcj=7.6 kOe, (BH)max=11.6 MGOe at 500 °C. The β (temperature coefficient of coercivity from room temperature to 500°C) can be optimized to +0.1113%/°C from −0.134%/°C as quenching temperature increases from 420 °C to 830 °C, but Hcj deteriorates to 1.4 kOe from 28 kOe. Distribution of Cu content in cell boundaries for Sm(CobalFe0.1Cu0.09Zr0.03)7.2 quenched at 420 °C and 830 °C was analyzed using TEM-EDS, the result indicates that distribution of Cu is the main reason to give rise to the variation of Hcj and β.http://dx.doi.org/10.1063/1.5129687
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Chao Wang Nengjun Yu Minggang Zhu Yikun Fang Shuai Wang Wei Li
spellingShingle	Chao Wang Nengjun Yu Minggang Zhu Yikun Fang Shuai Wang Wei Li High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet AIP Advances
author_facet	Chao Wang Nengjun Yu Minggang Zhu Yikun Fang Shuai Wang Wei Li
author_sort	Chao Wang
title	High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet
title_short	High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet
title_full	High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet
title_fullStr	High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet
title_full_unstemmed	High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet
title_sort	high temperature properties improvement and microstructure regulation of sm2co17-based permanent magnet
publisher	AIP Publishing LLC
series	AIP Advances
issn	2158-3226
publishDate	2019-12-01
description	It is well known that the high temperature magnetic properties of traditional Sm2Co17-based magnets can be further improved through adjustment of chemical composition and technique process. The Hcj of Sm(CobalFe0.1Cu0.09Zr0.03)z (z=7.0-7.3) magnets fluctuate over a large range at the variation of Sm content, and Sm(CobalFe0.1Cu0.09Zr0.03)7.2 magnet shows excellent magnetic properties as (BH)max of 22.5 MGOe, Hcj of 28.3 kOe and Br of 9.65 kG at room temperature respectively. Meantime through optimization of solid solution conditions, the Sm(CobalFe0.1Cu0.09Zr0.03)7.2 magnets possess excellent magnetic properties as Br=7.22 kG, Hcj=7.6 kOe, (BH)max=11.6 MGOe at 500 °C. The β (temperature coefficient of coercivity from room temperature to 500°C) can be optimized to +0.1113%/°C from −0.134%/°C as quenching temperature increases from 420 °C to 830 °C, but Hcj deteriorates to 1.4 kOe from 28 kOe. Distribution of Cu content in cell boundaries for Sm(CobalFe0.1Cu0.09Zr0.03)7.2 quenched at 420 °C and 830 °C was analyzed using TEM-EDS, the result indicates that distribution of Cu is the main reason to give rise to the variation of Hcj and β.
url	http://dx.doi.org/10.1063/1.5129687
work_keys_str_mv	AT chaowang hightemperaturepropertiesimprovementandmicrostructureregulationofsm2co17basedpermanentmagnet AT nengjunyu hightemperaturepropertiesimprovementandmicrostructureregulationofsm2co17basedpermanentmagnet AT minggangzhu hightemperaturepropertiesimprovementandmicrostructureregulationofsm2co17basedpermanentmagnet AT yikunfang hightemperaturepropertiesimprovementandmicrostructureregulationofsm2co17basedpermanentmagnet AT shuaiwang hightemperaturepropertiesimprovementandmicrostructureregulationofsm2co17basedpermanentmagnet AT weili hightemperaturepropertiesimprovementandmicrostructureregulationofsm2co17basedpermanentmagnet
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High temperature properties improvement and microstructure regulation of Sm2Co17-based permanent magnet

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