Effect of Solution Parameters on Microstructure and Magnetic Properties of Sm2Co17 Magnet

被引：0
|
作者：
Jia, Shulin [1 ]
Shi, Huigang [1 ]
Xiang, Junyou [2 ]
机构：
[1] School of Physics Science and Technology, Lanzhou University, Gansu, Lanzhou
[2] Division of the Permanent magnet materials, Hangzhou Kede Magnetic Components Co., Ltd, Hangzhou
来源：
Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2025年 / 43卷 / 01期
关键词：
magnetic properties; microstructure; Sm[!sub]2[!/sub]Co[!sub]17[!/sub] permanent magnets; solution temperature; solution time;
D O I：
10.11785/S1000-4343.20250108
中图分类号：
学科分类号：
摘要：
Sm2Co17 magnet samples with different solution temperature and solution time were prepared by powder metallurgy method. The effects of solution temperature and solution time on the microstructure and macroscopic magnetic properties of magnet were studied. The results show that the 2:17H phase and 1:7H phase are mutually transformed under different solution temperature and time. With the solution temperature increases and the solution time prolongates, the grain size of the magnet increases gradually. At the same solution temperature, the width of the magnetic domains treated with 9 h solution is smaller than that of the magnets treated with 6 h solution, and the uniformity of the domains is obviously improved. The magnetic energy of the magnet sample after 9 h solution treatment is(BH)max=32.11 MGOe, Hcj=26.56 kOe, Br=11.45 kGs, Sq=73.1 %. © 2025 Editorial Office of Chinese Rare Earths. All rights reserved.
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页码：87 / 95
页数：8
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共 27 条
  • [11] Fidler J, Skalicky P., Microstructure of precipitation hardened cobalt rare earth permanent magnets, J. Magn. Magn. Mater, 27, (1982)
  • [12] Cao J, Zhang T L, Liu J H, Xu H, Hu M Y, Xia W, Wang A, Wang H, Jiang C B., Grain boundary optimization induced substantial squareness enhancement and high performance in iron-rich Sm-Co-Fe-Cu-Zr magnets, J. Mater. Sci. Technol, 85, (2021)
  • [13] Li L Y, Yi J H, Huang B Y, Peng Y D, Du J., Microstructure of Sm<sub>2</sub>Co<sub>17</sub> magnets and its influence on coercivity, Trans. Nonferrous Met. Soc. China, 4, (2004)
  • [14] Xiong X Y, Ohkubo T, Koyama T, Ohashi K, Tawara Y, Hono K., The microstructure of sintered Sm (Co<sub>0.72</sub>Fe<sub>0:20</sub>Cu<sub>0.055</sub>Zr<sub>0.025</sub>)<sub>7.5</sub> permanent magnet studied by atom probe, Acta Mater, 52, (2004)
  • [15] Liu BJ, Wang H, Yu Q J, Xu H, Zhang T L, Liu J H, Jiang C B., Quantitative analysis of pinning-hardened intrinsic coercivity of Sm(CoFeCuZr)(<sub>z</sub> z=7.0‒7.8)high-temperature permanent magnets, J. Alloys Compd, 872, (2021)
  • [16] Horiuchi Y, Hagiwara M, Okamoto K, Kobayashi T, Endo M, Kobayashi T, Sanada N, Sakurada S., Effect of pre-aging treatment on the microstructure and magnetic properties of Sm(Co, Fe, Cu, Zr)<sub>7.8</sub> sintered magnets, Mater. Trans, 55, (2014)
  • [17] Wang S, Chen H S, Fang YK, Wang C, Wang L, Zhu M G, Li W., Identification of optimal solid solution temperature for Sm<sub>2</sub>Co<sub>17</sub>-type permanent magnets with different Fe contents[J], Rare Met, 40, (2021)
  • [18] Horiuchi Y, Hagiwara M, Okamoto K, Kobayashi T, Endo M, Kobayashi T, Sanada N, Sakurada S., Effects of solution treated temperature on the structural and magnetic properties of iron-rich sintered magnet, IEEE Trans. Magn, 49, (2013)
  • [19] Wang S, Fang Y K, Song K K, Zhu X Y, Wang L, Sun W, Pan W, Zhu M G, Li W., Optimization of both coercivity and knee-point magnetic field of Sm<sub>2</sub>Co<sub>17</sub>-type magnets via solid solution process, J. Rare Earths, 38, (2020)
  • [20] Durst K D, Kronmulle H, Parker F T, Oesterreiche H., Temperature dependence of coercivity of cellular SmCo<sub>17</sub>SmCo<sub>6</sub>permanent magnets, Phys. Status Solidi, 95, (1986)
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