CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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High performance RE–Fe–B sintered magnets with high-content misch metal by double main phase process |
Yan-Li Liu(刘艳丽)1,2,3, Qiang Ma(马强)1,2, Xin Wang(王鑫)2, Jian-Jun Zhou(周建军)2, Tong-Yun Zhao(赵同云)1,3, Feng-Xia Hu(胡凤霞)1,3, Ji-Rong Sun(孙继荣)1,3, and Bao-Gen Shen(沈保根)1,3,† |
1 State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 2 School of Science, Inner Mongolia University of Science and Technology, Baotou 014010, China 3 University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract Double main phase process is applied to fabricate [(Pr, Nd)1 – xMMx]13.8FebalM1.5B5.9 (x = 0.5 and 0.7; M = Cu, Al, Co, and Nb) sintered magnets with high misch metal (MM) content. In comparison to the magnets by single main phase process, the enhanced magnetic properties have been achieved. For magnets of x = 0.7, Hcj increases to 371.9 kA/m by 60.5%, and (BH)max is significantly enhanced to 253.3 kJ/m3 by 56.9%, compared with those of the single main phase magnets of the same nominal composition. In combination with minor loops and magnetic recoil curves, the property improvement of magnets with double main phase method is well explained. As a result, it is demonstrated that double main phase technology is an effective approach to improve the permanent magnetic properties of MM based sintered magnets.
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Received: 21 August 2020
Revised: 26 August 2020
Accepted manuscript online: 01 September 2020
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PACS:
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75.47.Np
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(Metals and alloys)
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75.50.Ww
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(Permanent magnets)
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75.60.Jk
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(Magnetization reversal mechanisms)
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Corresponding Authors:
†Corresponding author. E-mail: shenbg@iphy.ac.cn
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About author: †Corresponding author. E-mail: shenbg@iphy.ac.cn * Project supported by the National Natural Foundation of China (Grant Nos. 51590880, 11564030, and 51571126), the National Key Research Program of China (Grant No. 2016YFB0700903), Fujian Institute of Innovation, Chinese Academy of Sciences (Grant No. FJCXY18040302), the Key Program of the Chinese Academy of Sciences (Grant No. KJZD-EW-M05-1), the Inner Mongolia Science and Technology Major Project of 2016, China, and the Natural Science Foundation of Inner Mongolia, China (Grant Nos. 2018LH05006 and 2018LH05011). |
Cite this article:
Yan-Li Liu(刘艳丽), Qiang Ma(马强), Xin Wang(王鑫), Jian-Jun Zhou(周建军), Tong-Yun Zhao(赵同云), Feng-Xia Hu(胡凤霞), Ji-Rong Sun(孙继荣), and Bao-Gen Shen(沈保根)† High performance RE–Fe–B sintered magnets with high-content misch metal by double main phase process 2020 Chin. Phys. B 29 107504
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