Coercivity and microstructure of sintered Nd–Fe–B magnets diffused with Pr–Co, Pr–Al, and Pr–Co–Al alloys
The commercial 42M Nd–Fe–B magnet was treated by grain boundary diffusion (GBD) with Pr 70 Co 30 (PC), Pr 70 Al 30 (PA) and Pr 70 Co 15 Al 15 (PCA) alloys, respectively. The mechanism of coercivity enhancement in the GBD magnets was investigated. The coercivity was enhanced from 1.63 T to 2.15 T in...
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| Veröffentlicht in: | Chinese physics B 2021-01, Vol.30 (2), p.27503-572 |
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| creator | Jin, Lei Jin, Zhe-Huan Zhu, Jin-Hao Ding, Guang-Fei Zheng, Bo Guo, Shuai Chen, Ren-Jie Yan, A-Ru Liu, Xin-Cai |
| description | The commercial 42M Nd–Fe–B magnet was treated by grain boundary diffusion (GBD) with Pr
70
Co
30
(PC), Pr
70
Al
30
(PA) and Pr
70
Co
15
Al
15
(PCA) alloys, respectively. The mechanism of coercivity enhancement in the GBD magnets was investigated. The coercivity was enhanced from 1.63 T to 2.15 T in the PCA GBD magnet, higher than the 1.81 T of the PC GBD magnet and the 2.01 T of the PA GBD magnet. This indicates that the joint addition of Co and Al in the diffusion source can further improve the coercivity. Microstructural investigations show that the coercivity enhancement is mainly attributed to the exchange-decoupling of the GB phases. In the PCA GBD magnet, the wider thin GB phases can be formed and the thin GB phases can still be observed at the diffusion depth of 1500 μm due to the combined action of Co and Al. At the same time, the formation of the Pr-rich shell can also be observed, which is helpful for the coercivity enhancement. |
| doi_str_mv | 10.1088/1674-1056/abc166 |
| format | Article |
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70
Co
30
(PC), Pr
70
Al
30
(PA) and Pr
70
Co
15
Al
15
(PCA) alloys, respectively. The mechanism of coercivity enhancement in the GBD magnets was investigated. The coercivity was enhanced from 1.63 T to 2.15 T in the PCA GBD magnet, higher than the 1.81 T of the PC GBD magnet and the 2.01 T of the PA GBD magnet. This indicates that the joint addition of Co and Al in the diffusion source can further improve the coercivity. Microstructural investigations show that the coercivity enhancement is mainly attributed to the exchange-decoupling of the GB phases. In the PCA GBD magnet, the wider thin GB phases can be formed and the thin GB phases can still be observed at the diffusion depth of 1500 μm due to the combined action of Co and Al. At the same time, the formation of the Pr-rich shell can also be observed, which is helpful for the coercivity enhancement.</description><identifier>ISSN: 1674-1056</identifier><identifier>DOI: 10.1088/1674-1056/abc166</identifier><language>eng</language><publisher>University of Chinese Academy of Sciences,Beijing 100049,China%School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China</publisher><ispartof>Chinese physics B, 2021-01, Vol.30 (2), p.27503-572</ispartof><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c275t-9b1be4ced8eef289a2da353814ab3488029c1a19be0354db2a36918b3e48e0683</citedby><cites>FETCH-LOGICAL-c275t-9b1be4ced8eef289a2da353814ab3488029c1a19be0354db2a36918b3e48e0683</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/zgwl-e/zgwl-e.jpg</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Jin, Lei</creatorcontrib><creatorcontrib>Jin, Zhe-Huan</creatorcontrib><creatorcontrib>Zhu, Jin-Hao</creatorcontrib><creatorcontrib>Ding, Guang-Fei</creatorcontrib><creatorcontrib>Zheng, Bo</creatorcontrib><creatorcontrib>Guo, Shuai</creatorcontrib><creatorcontrib>Chen, Ren-Jie</creatorcontrib><creatorcontrib>Yan, A-Ru</creatorcontrib><creatorcontrib>Liu, Xin-Cai</creatorcontrib><title>Coercivity and microstructure of sintered Nd–Fe–B magnets diffused with Pr–Co, Pr–Al, and Pr–Co–Al alloys</title><title>Chinese physics B</title><description>The commercial 42M Nd–Fe–B magnet was treated by grain boundary diffusion (GBD) with Pr
70
Co
30
(PC), Pr
70
Al
30
(PA) and Pr
70
Co
15
Al
15
(PCA) alloys, respectively. The mechanism of coercivity enhancement in the GBD magnets was investigated. The coercivity was enhanced from 1.63 T to 2.15 T in the PCA GBD magnet, higher than the 1.81 T of the PC GBD magnet and the 2.01 T of the PA GBD magnet. This indicates that the joint addition of Co and Al in the diffusion source can further improve the coercivity. Microstructural investigations show that the coercivity enhancement is mainly attributed to the exchange-decoupling of the GB phases. In the PCA GBD magnet, the wider thin GB phases can be formed and the thin GB phases can still be observed at the diffusion depth of 1500 μm due to the combined action of Co and Al. At the same time, the formation of the Pr-rich shell can also be observed, which is helpful for the coercivity enhancement.</description><issn>1674-1056</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNo9kL9OwzAQxj2ARCnsjN5YGuo_ieuMJaKAVAEDzJZjn0uqNEF2QlQm3oE35ElImorl7vR9n-50P4SuKLmhRMo5FYs4oiQRc50bKsQJmvxLZ-g8hC0hghLGJ6jNavCm-CyaPdaVxbvC-Do0vjVN6wHXDoeiasCDxU_29_tnBX25xTu9qaAJ2BbOtaE3u6J5xy--N7N6Ng7LcnZYeVQPCtZlWe_DBTp1ugxweexT9La6e80eovXz_WO2XEeGLZImSnOaQ2zASgDHZKqZ1TzhksY657GUhKWGaprmQHgS25xpLlIqcw6xBCIkn6LrcW-nK6erjdrWra_6i-pr05UKGGE9BiJEnyRjcng_eHDqwxc77feKEjVAVQNBNRBUI1T-B4oYcmE</recordid><startdate>20210101</startdate><enddate>20210101</enddate><creator>Jin, Lei</creator><creator>Jin, Zhe-Huan</creator><creator>Zhu, Jin-Hao</creator><creator>Ding, Guang-Fei</creator><creator>Zheng, Bo</creator><creator>Guo, Shuai</creator><creator>Chen, Ren-Jie</creator><creator>Yan, A-Ru</creator><creator>Liu, Xin-Cai</creator><general>University of Chinese Academy of Sciences,Beijing 100049,China%School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China</general><general>Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China%Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China%Key Laboratory of Magnetic Materials and Devices,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China</general><general>School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China</general><scope>AAYXX</scope><scope>CITATION</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20210101</creationdate><title>Coercivity and microstructure of sintered Nd–Fe–B magnets diffused with Pr–Co, Pr–Al, and Pr–Co–Al alloys</title><author>Jin, Lei ; Jin, Zhe-Huan ; Zhu, Jin-Hao ; Ding, Guang-Fei ; Zheng, Bo ; Guo, Shuai ; Chen, Ren-Jie ; Yan, A-Ru ; Liu, Xin-Cai</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c275t-9b1be4ced8eef289a2da353814ab3488029c1a19be0354db2a36918b3e48e0683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Jin, Lei</creatorcontrib><creatorcontrib>Jin, Zhe-Huan</creatorcontrib><creatorcontrib>Zhu, Jin-Hao</creatorcontrib><creatorcontrib>Ding, Guang-Fei</creatorcontrib><creatorcontrib>Zheng, Bo</creatorcontrib><creatorcontrib>Guo, Shuai</creatorcontrib><creatorcontrib>Chen, Ren-Jie</creatorcontrib><creatorcontrib>Yan, A-Ru</creatorcontrib><creatorcontrib>Liu, Xin-Cai</creatorcontrib><collection>CrossRef</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Chinese physics B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Jin, Lei</au><au>Jin, Zhe-Huan</au><au>Zhu, Jin-Hao</au><au>Ding, Guang-Fei</au><au>Zheng, Bo</au><au>Guo, Shuai</au><au>Chen, Ren-Jie</au><au>Yan, A-Ru</au><au>Liu, Xin-Cai</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coercivity and microstructure of sintered Nd–Fe–B magnets diffused with Pr–Co, Pr–Al, and Pr–Co–Al alloys</atitle><jtitle>Chinese physics B</jtitle><date>2021-01-01</date><risdate>2021</risdate><volume>30</volume><issue>2</issue><spage>27503</spage><epage>572</epage><pages>27503-572</pages><issn>1674-1056</issn><abstract>The commercial 42M Nd–Fe–B magnet was treated by grain boundary diffusion (GBD) with Pr
70
Co
30
(PC), Pr
70
Al
30
(PA) and Pr
70
Co
15
Al
15
(PCA) alloys, respectively. The mechanism of coercivity enhancement in the GBD magnets was investigated. The coercivity was enhanced from 1.63 T to 2.15 T in the PCA GBD magnet, higher than the 1.81 T of the PC GBD magnet and the 2.01 T of the PA GBD magnet. This indicates that the joint addition of Co and Al in the diffusion source can further improve the coercivity. Microstructural investigations show that the coercivity enhancement is mainly attributed to the exchange-decoupling of the GB phases. In the PCA GBD magnet, the wider thin GB phases can be formed and the thin GB phases can still be observed at the diffusion depth of 1500 μm due to the combined action of Co and Al. At the same time, the formation of the Pr-rich shell can also be observed, which is helpful for the coercivity enhancement.</abstract><pub>University of Chinese Academy of Sciences,Beijing 100049,China%School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China</pub><doi>10.1088/1674-1056/abc166</doi><tpages>6</tpages></addata></record> |
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| title | Coercivity and microstructure of sintered Nd–Fe–B magnets diffused with Pr–Co, Pr–Al, and Pr–Co–Al alloys |
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