Effect of antioxidants on the efficiency of jet milling and the powder characteristics of Sm2Co17 permanent magnets

doi:10.1088/1674-1056/ad5537

Abstract This study investigated the effect of antioxidants on the grinding efficiency, magnetic powder characteristics, microstructure, and magnetic properties of 2:17 type SmCo permanent magnet materials. The results show that adding antioxidants helps improve the dispersion among magnetic powders, leading to a 33.3% decrease in jet milling time and a 15.8% increase in magnet powder production yield. Additionally, adding antioxidants enhances the oxidation resistance of the magnetic powders. After being stored in a constant temperature air environment at 25 ${^\circ}$C for 48 h, the O content in the powder decreased by 33% compared to samples without antioxidants. While in the magnet body, the O content decreased from 0.21 wt.% to 0.14 wt.%, which helps increase the effective Sm content and domain wall pinning uniformity in the magnet. Excellent magnetic properties were obtained in the magnet with added antioxidants: $B_{\rm r} = 11.6$ kGs, ${\rm SF} = 79.6 $%, $H_{\rm cj} = 16.8$ kOe, and $(BH)_{\max} = 32.5 $ MGOe.

Keywords: antioxidant SmCo permanent magnet oxidation resistance grinding efficiency

Received: 04 April 2024
Revised: 16 May 2024
Accepted manuscript online: 07 June 2024

PACS:	81.20.Ev	(Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation)
	75.50.Ww	(Permanent magnets)
	81.16.Pr	(Micro- and nano-oxidation)
	81.40.-z	(Treatment of materials and its effects on microstructure, nanostructure, And properties)

Fund: Project supported by the National Key R&D Program of China (Grant No. 2021YFB3803003), the Youth Innovation Promotion Association of Chinese Academy of Sciences (Grant No. 2023311), Zhejiang Public Welfare Technology Application Research Project (Grant No. LGG22E010013), and Class III Peak Discipline of Shanghai-Materials Science and Engineering (High-Energy Beam Intelligent Processing and Green Manufacturing).

Corresponding Authors: Lei Liu, Jian-Hui Yuan
E-mail: liulei@nimte.ac.cn;yuanjh@sues.edu.cn

Cite this article:

Da-Shuai Xu(许大帅), Lei Liu(刘雷), Jian-Hui Yuan(袁建辉), Bo Zhou(周波), Chuang-Hui Dong(董创辉), Feng-Qing Wang(王凤青), Yong Ding(丁勇), Ying-Li Sun(孙颖莉), and A-Ru Yan(闫阿儒) Effect of antioxidants on the efficiency of jet milling and the powder characteristics of Sm₂Co₁₇ permanent magnets 2024 Chin. Phys. B 33 098103

[1] Wu H C, Liu Z, Zhang C Y, Yang Q Q, Lu H M, Chen G X, Wang X M, Li Y, Chen R J and Yan A R 2022 Journal of Rare Earths 40 102
[2] Wang S, Fang Y K, Wang C, Wang L, Zhu M G, Li W and Hadjipanayis G C 2020 J. Magn. Magn. Mater. 510 166942
[3] Yu N J, Zhu M G, Song L W, Fang Y K, Song K K, Wang Q and Li W 2018 J. Magn. Magn. Mater. 452 272
[4] Feng H B, Chen H S, Guo Z H, Yu R H and Li W 2010 Intermetallics 18 1067
[5] Zhou B, Ding Y, Liu L, Sun Y L, Wang F X, Xu D S, Hu F Q, Wang F Q, Liang J C and Yan A 2023 J. Alloys Compd. 969 172444
[6] Yu N J, Li Y C, Ren Z S, Pan M X, Yang H F, Wu Q, Ge H L, Zhu M G and Li W 2023 J. Mater. Sci. Technol. 153 159
[7] Zhang Y, Cao X, Tan H T, Gill V, Lambourne A, Yan A Q and Huang Y Z 2021 Scripta Materialia 200 113911
[8] Cao J, Zhang T L, Liu J H, Xu H, Hu M Y, Xia W, Wang A, Wang H and Jiang C B 2021 J. Mater. Sci. Technol. 85 56
[9] Chen H B, Zheng J W, Qiao L, Ying Y, Jiang L Q and Che S L 2015 Advanced Powder Technology 26 618
[10] Chen H, Liu W Q, Li Z, Li Y Q, Yin Y T, Cui H Y and Yue M 2020 Materials Letters 267 127509
[11] Palaniandy S, Azizli K A M, Hussin H and Hashim S F S 2008 Minerals Engineering 21 380
[12] Paramasivam R and Vedaraman R 1992 Powder Technology 70 43
[13] Varinot C, Hiltgun S, Pons M N and Dodds J 1997 Chemical Engineering Science 52 3605
[14] Prziwara P, Breitung-Faes S and Kwade A 2018 Advanced Powder Technology 29 416
[15] Miethke L, Prziwara P, Finke J H and Breitung-Faes S 2021 Pharmaceutics 13 1434
[16] Godet-Morand L, Chamayou A and Dodds J 2002 Powder Technology 128 306
[17] Prziwara P, Breitung-Faes S and Kwade A 2019 Minerals Engineering 144 106030
[18] Yuan T, Song X, Zhou X L, Jia W, Musa M, Wang J D and Ma T Y 2020 J. Mater. Sci. Technol. 53 73
[19] Li T Y, Liu Z, Feng Y P, Liu L, Zhang C Y, Yan G H, Feng Z X, Lee D and Yan A 2018 J. Alloys Compd. 753 162
[20] Liu Z, Zhang C Y, Wu H C, Chen R J and Yan A R 2022 Materials 15 5160
[21] Zhang T L, Song Q, Wang H, Wang J M, Liu J H and Jiang C B 2018 J. Alloys Compd. 735 1971
[22] Wang Y Q, Yue M, Wu D, Zhang D T, Liu W Q, Zhang H G and Du Y H 2018 J. Alloys Compd. 741 495
[23] Zhang C Y, Liu Z, Li M, Liu L, Li T Y, Chen R J, Lee D and Yan A 2018 Scientific Reports 8 9103
[24] Pragnell W M, Evans H E and Williams A J 2012 J. Alloys Compd. 517 92
[25] Qadeer M I, Azhdar B, Hedenqvist M S and Savage S J 2012 Corrosion Science 65 453
[26] Liu S Q 2019 Chin. Phys. B 28 017501
[27] Liu B J, Wang H, Yu Q J, Xu H, Zhang T L, Liu J H and Jiang C B 2021 J. Alloys Compd. 872 159622
[28] Liu L, Liu Z, Chen R J, Liu X M, Yan A R, Lee D and Li W 2014 IEEE Transactions on Magnetics 50 2101704
[29] Matsuura Y, Maruyama R, Kato R, Tamura R, Ishigami K, Sumitani K, Kajiwara K and Nakamura T 2020 Appl. Phys. Lett. 117 022409

[1]	Relationship between ESIPT properties and antioxidant activities of 5-hydroxyflavone derivates Chaofan Sun(孙朝范), Bifa Cao(曹必发), Hang Yin(尹航), Ying Shi(石英). Chin. Phys. B, 2020, 29(5): 058202.
[2]	Nanosheet-structured B₄C with high hardness up to 42 GPa Chang-Chun Wang(王常春), Le-Le Song(宋乐乐). Chin. Phys. B, 2019, 28(6): 066201.

[1]	FAN WEI-JUN (范卫军), XIA JIAN-BAI (顾宗权), GU ZONG-QUAN (夏建白), LI GUO-HUA (李国华). FIRST-PRINCIPLE SELF-CONSISTENT PSEUDOPOTENTIAL CALCULATION OF THE ELECTRONIC STRUCTURES OF SHORT-PERIOD (GaAs)_m(AlAs)_n SUPERLATT1CES[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(1): 45 -50 .
[2]	LIN WEI-ZHU (林位株), PENG WEN-JI (彭文基), QIU ZHI-REN (丘志仁), ZHOU XUE-CONG (周学聪), MO DANG (莫党). DYNAMICS OF CARRIER CAPTURE IN AlGaAs/GaAs MULTIPLE QUANTUM WELLS[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(1): 63 -68 .
[3]	JIN YING (金鹰), ZHANG SHU-LIN (张树霖), QIN GUO-GANG (秦国刚), FAN YONG-LIANG (樊永良), ZHOU GOU-LIANG (周国良), YU MING-REN (俞鸣人). RAMAN SCATTERING INTENSITIES OF FOLDED LONGITUDINAL ACOUSTIC PHONONS IN Ge_xSi_1-x/Si SUPERLATTICES[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(2): 130 -137 .
[4]	WANG JIAN (王坚), WU XING-FANG (吴杏芳), FANG ZHENG-ZHI (方正知). DIFFUSIVE AGGREGATION ON ION IMPLANTED THIN FILMS[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(2): 81 -85 .
[5]	TIAN REN-HE (田人和), MANFRED FINK. THE BEAM TEMPERATURE AND ENERGY BROADENING OF A CHARGED-PARTICLE BEAM IN AN AXIALLY SYMMETRIC MAGNETIC FIELD[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(2): 86 -93 .
[6]	SUN XIAN-PING (孙献平), HU ZHI-LIN (胡志林), ZENG XI-ZHI (曾锡之), WANG QING-JI (王庆吉), ZHENG LE-MIN (郑乐民). THE 8²S_1/2→6²D EXCITATION TRANSFER OF RUBIDIUM ATOMS INDUCED BY COLLISIONS WITH GROUND-STATE RUBIDIUM AND HYDROGEN MOLECULES[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(3): 167 -172 .
[7]	MEI GANG-HUA (梅刚华), HUANG GUI-LONG (黄贵龙), ZHU XI-WEN (朱熙文), ZHANG YUAN (张原), LIU ZHI-YUAN (刘秩媛), ZENG XIAO-YUN (曾小云). STUDY OF OPTICAL PUMPING OF ALKALI ATOMIC BEAM IN STRONG MAGNETIC FIELDS[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(3): 173 -182 .
[8]	PENG WEN-JI (彭文基), LI QING-XING (李庆行), YU ZHEN-XIN (余振新), AN NING (安宁), XU MAI (徐迈). STUDIES ON THE DYNAMICS OF OPTICAL BISTABILITY SWITCHING IN THE INTERNAL FABRY-PEROT CAVITY WITH A CdS_xSe_1-x-DOPED GLASS CHANNEL WAVEGUIDE[J]. Acta Physica Sinica (Overseas Edition), 1992, 1(3): 183 -190 .
[9]	PENG YU-FENG (彭玉峰), TANG JUN-XIONG (汤俊雄), WANG QING-JI (王庆吉). STUDY OF FARADAY ANOMALOUS DISPERSION SPECTRA OF THE HYPERFINE STRUCTURE OF Rb D₂ LINES[J]. Acta Physica Sinica (Overseas Edition), 1993, 2(1): 1 -8 .
[10]	LIU SI-MIN (刘思敏), ZHANG GUANG-YIN (张光寅), YAN XIANG-JUN (严向军), XU JING-JUN (许京军), JI WEI-XING (纪卫星), WU YUAN-QING (武原庆), GUO RU (郭儒). A SINGLE-BEAM OPTICAL TRAP FOR AIR BUBBLES IN A LIQUID AND THE CHANGE OF THE OPTICAL FIELD[J]. Acta Physica Sinica (Overseas Edition), 1993, 2(1): 9 -14 .

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Effect of antioxidants on the efficiency of jet milling and the powder characteristics of Sm2Co17 permanent magnets

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Effect of antioxidants on the efficiency of jet milling and the powder characteristics of Sm₂Co₁₇ permanent magnets