2∶17型SmCo稀土永磁合金以良好的温度特性和较高的磁性能已成为不可或缺的高温永磁器件,通过球磨工艺,利用有机试剂庚烷和油酸对2∶17型Sm（CobalFe0.07Cu0.088Zr0.025）7.5磁粉表面的包覆预处理,并在磁场强度为1.5T的外磁场下,对该磁粉进行细磨0.5~20h,制备得到厚度为20~100nm、具有各向异性能的纳米级磁片,其对应的磁性能（BH）m为127.36kJ/m3。
In this study, a new preparation method of Sm2Co17 flakes was investigated. Nanocrystalline hard magnetic Sm(Cohal Fe0.07Cu0.088Zr0.025)7.5 flakes with 20-100nm thickness were obtained by milling in heptanes and oleic acid under 1.5T magnetic field for 0.5-20 hours. It was shown that the magnetic anisotropy of the prepared 3m2Co17 flakes after aligned at 1. 5 T magnetic field could be further enhanced. The best (BH)m of 127.36kJ/ma was obtained for the magnetic anisotropic 3m2Co17 nano-flakes.
参考文献
| [1] | Handstein A;Yan A;Martinek G et al.Stability ofmagnetic properties of Sm2Co17-type magnets at operat-ing temperatures higher than 400°C[J].IEEE Transac-tions on Magnetics,2003,39(05):2923-2927. |
| [2] | 易健宏,彭元东.2：17型SmCo稀土永磁材料的研究现状与趋势[J].稀有金属材料与工程,2004(04):337-342. |
| [3] | 郭朝晖,潘伟,李岫梅,胡新建,秦英,李卫.2∶17型Sm-Co高温永磁体的研究[J].稀有金属,2003(05):552-554. |
| [4] | Walmer M H.Recent development in sintered Sm-Comagnets[A].United States of America,2002:37. |
| [5] | Liyun Zheng;Baozhi Cui;Nilay G. Akdogan;Wanfeng Li;George C. Hadjipanayis .Influence of octanoic acid on SmCo_5 nanoflakes prepared by surfactant-assisted high-energy ball milling[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(2):391-394. |
| [6] | Shen Y;Huang M Q;Higgins A K et al.Preparation ofPrCo5 bulk magnets using nanograin powders made bysurfactant-assisted high energy milling[J].Journal of Applied Physics,2010,107:09A722. |
| [7] | P. Saravanan;M. Premkumar;A.K. Singh .Study on morphology and magnetic behavior of SmCo_5 and SmCo_5/Fe nanoparticles synthesized by surfactant-assisted ball milling[J].Journal of Alloys and Compounds,2009(2):645-649. |
| [8] | Kato H;Akiya T;Sagawa M.Effect of high mag-netic field on the coercivity in sintered NdFeB magnets[J].Journal of Magnetism and Magnetic Materials,2007(3l0):2596-2602. |
| [9] | 佐佐健介;森川拓;浅井滋生.强磁场材料学[M].仙台:曰本金属学会志,1997:1283. |
| [10] | Yang Liping;Tan Xiaohua;Xu Hui et al.Study on themagnetic properties and temperature coefficients ofnanocomposite Nd9.5 Fe76 Co5 Zr3-x.Nbr B6.5(x = 0-3.0)magnets[J].Journal of Functional Materials,2012,43(09):1102-1105. |
| [11] | 郭朝晖,李卫.Sm（CobalFexCu0.088Zr0.025）7.5（x=0-0.30）烧结永磁体的磁性及其高温特性[J].金属学报,2002(08):866-870. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%