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Coercivity enhancement of sintered Nd-Fe-B magnets by grain boundary diffusion with Pr80-xAlxCu20 alloys |
| Zhe-Huan Jin(金哲欢)1,2, Lei Jin(金磊)1,2, Guang-Fei Ding(丁广飞)2,3, Shuai Guo(郭帅)2,3,†, Bo Zheng(郑波)2, Si-Ning Fan(樊思宁)2, Zhi-Xiang Wang(王志翔)2, Xiao-Dong Fan(范晓东)2, Jin-Hao Zhu(朱金豪)2, Ren-Jie Chen(陈仁杰)2,3,4, A-Ru Yan(闫阿儒)2,3, Jing Pan(潘晶)1, and Xin-Cai Liu(刘新才)1,‡ |
1 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China;
2 Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;
3 University of Chinese Academy of Sciences, Beijing 100049, China;
4 Ganjiang Innovation Academy, Chinese Academy of Science, Ganjiang 342799, China |
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Abstract A grain boundary diffusion (GBD) process with Pr80-xAlxCu20 (x = 0, 10, 15, 20) low melting point alloys was applied to commercial 42M sintered Nd-Fe-B magnets. The best coercivity enhancement of a diffused magnet was for the Pr65Al15Cu20 GBD magnet, from 16.38 kOe to 22.38 kOe. Microstructural investigations indicated that increase in the Al content in the diffusion source can form a continuous grain boundary (GB) phase, optimizing the microstructure to enhance the coercivity. The coercivity enhancement is mainly due to the formation of a continuous GB phase to separate the main phase grains. Exchange decoupling between the adjacent main phase grains is enhanced after the GBD process. Meanwhile, the introduction of Al can effectively promote the infiltration of Pr into the magnet, which increases the diffusion rate of rare-earth elements within a certain range. This work provides a feasible method to enhance coercivity and reduce the use of rare-earth resources by partial replacement of rare-earth elements with non-rare-earth elements in the diffusion source.
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Received: 02 January 2022
Revised: 28 March 2022
Accepted manuscript online: 14 April 2022
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PACS:
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75.60.Nt
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(Magnetic annealing and temperature-hysteresis effects)
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75.50.Ww
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(Permanent magnets)
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75.50.Vv
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(High coercivity materials)
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75.60.Ej
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(Magnetization curves, hysteresis, Barkhausen and related effects)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2021YFB3502802), Major Science and Technology Research and Development Project of Jiangxi Province, China (Grant No. 20203ABC28W006), the Key Research and Development Program of Shandong Province, China (Grant No. 2019JZZY010321), Major Project of "Science and Technology Innovation 2025" in Ningbo City (Grant No. 2020Z046), and the K. C. Wong Magna Fund in Ningbo University. |
Corresponding Authors:
Shuai Guo, Xin-Cai Liu
E-mail: gshuai@nimte.ac.cn;liuxincai@nbu.edu.cn
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Cite this article:
Zhe-Huan Jin(金哲欢), Lei Jin(金磊), Guang-Fei Ding(丁广飞), Shuai Guo(郭帅), Bo Zheng(郑波),Si-Ning Fan(樊思宁), Zhi-Xiang Wang(王志翔), Xiao-Dong Fan(范晓东), Jin-Hao Zhu(朱金豪),Ren-Jie Chen(陈仁杰), A-Ru Yan(闫阿儒), Jing Pan(潘晶), and Xin-Cai Liu(刘新才) Coercivity enhancement of sintered Nd-Fe-B magnets by grain boundary diffusion with Pr80-xAlxCu20 alloys 2023 Chin. Phys. B 32 017505
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[1] Hono K and Sepehri-Amin H 2012 Scr. Mater. 67 530
[2] Brown D, Ma B M and Chen Z M 2002 J. Magn. Magn. Mater. 248 432
[3] Fukagawa T, Hirosawa S, Ohkubo T and Hono K 2009 J. Appl. Phys. 105 07A724
[4] Hirota K, Nakamura H, Minowa T and Honshima M 2006 IEEE Trans. Magn. 42 2909
[5] Herbst J F 1991 Rev. Mod. Phys. 63 819
[6] Ding G F, Liao S C, Di J H, Zheng B, Guo S, Chen R J and Yan A R 2020 Acta Mater. 194 547
[7] Xu X D, Sasaki T T, Li J N, Dong Z J, Sepehri-Amin H, Kim T H, Ohkubo T, Schrefl T and Hono K 2018 Acta Mater. 156 146
[8] Soderznik M, Sepehri-Amin H, Sasaki T T, Ohkubo T, Takada Y, Sato T, Kaneko Y, Kato A, Schrefl T and Hono K 2017 Acta Mater. 135 68
[9] Chen F G, Zhang T Q, Wang J, Zhang L T and Zhou G F 2015 Scr. Mater. 107 38
[10] Tang M H, Bao X Q, Zhang X J, Mu X, Lu K C, Li J H and Gao X X 2019 J. Rare Earth. 37 393
[11] Jin L, Jin Z H, Zhu J H, Ding G F, Zheng B, Guo S, Chen R J, Yan A R and Liu X C 2021 Chin. Phys. B 30 027503
[12] Zhu J H, Jin L, Jin Z H, Ding G F, Zheng B, Guo S, Chen R J and Yan A R 2021 Chin. Phys. B 30 067503
[13] Zeng H X, Liu Z W, Li W, Zhang J S, Zhao L Z, Zhong X C, Yu H Y and Guo B C 2019 J. Magn. Magn. Mater. 471 97
[14] Di J H, Ding G F, Tang X, Yang X, Guo S, Chen R J and Yan A R 2018 Scr. Mater. 155 50
[15] Lu K C, Bao X Q, Chen G X, Zhang X J, Tang M H, Mu X, Li J H and Gao X X 2019 Scr. Mater. 160 86
[16] Hirosawa S, Matsuura Y, Yamamoto H, Fujimura S, Sagawa M and Yamauchi H 1986 J. Appl. Phys. 59 873
[17] Chen B C, Liu X M, Chen R J, Guo S, Lee D and Yan A R 2012 J. Alloys Compd. 516 73
[18] Kim T H, Lee S R, Yun S J, Lim S H, Kim H J, Lee M W and Jang T S 2016 Acta Mater. 112 59
[19] Hirosawa S, Yamaguchi Y, Tokuhara K, Yamamoto H, Fujimura S and Sagawa M 1987 IEEE Trans. Magn. 23 2120
[20] Cao S, Bao X Q, Li J H, Yu H J, Zhu K Y and Gao X X 2020 J. Rare Earth. 38 395
[21] Loewe K, Brombacher C, Katter M and Gutfleisch O 2015 Acta Mater. 83 248
[22] Xu F, Wang J, Dong X P, Zhang L T and Wu J S 2011 J. Alloys Compd. 509 7909
[23] Wang J H, Wang G and Zeng D C 2020 J. Magn. Magn. Mater. 503 166639
[24] Bae K H, Kim T H, Lee S R, Kim H J, Lee M W and Jang T S 2014 J. Alloys Compd. 612 183
[25] Lu K C, Bao X Q, Tang M H, Sun L, Li J H and Gao X X 2017 J. Magn. Magn. Mater. 441 517 |
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