Effect of Preparation Process on Magnetic Properties of Amorphous Magnetic Powder Cores

被引：0
|
作者：
Gu W. [1 ]
Zhang Z. [1 ]
Yang J. [2 ]
机构：
[1] Shanghai Zhixin Electric Amorphous Co. Ltd., Shanghai
[2] Shanghai Zhixin Electric Co. Ltd., Shanghai
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2020年 / 34卷 / 04期
关键词：
Amorphous magnetic powder cores; Insulation scheme; Magnetic properties; Metal materials; Particle size ratio;
D O I：
10.11901/1005.3093.2019.539
中图分类号：
学科分类号：
摘要：
The effect of particle size-grading and the packaging with various insulating agents on the properties of amorphous magnetic powder cores was investigated. Firstly, the variations of compression density, magnetic permeability, loss and DC biasing capability of amorphous magnetic powder cores were studied by changing the particle size-grading of amorphous powder. It was found that with magnetic powder of particle size-grading as 10%, 30%, 30% and 30% for particles with size in between -140~+170, -170~+200, -200~+350 and -350 ~+1000 mesh respectively, the compacting density of the amorphous magnetic powder cores increased, thereby the DC biasing capability increased, while the magnetic loss decreased. Secondly, different insulating agents were used to encapsulate the amorphous magnetic powder cores. The results show that using phosphoric acid as insulating agent can reduce the magnetic loss and improve the DC biasing capability more effectively than using water glass as insulating agent. Thirdly, low-melting glass frit not only acts as an insulator in the amorphous magnetic powder cores but also acts as a binder. Finally, the magnetic properties of the amorphous magnetic powder cores prepared by using the powder of recycled waste amorphous iron cores are not significantly different from those prepared by using the powder of the ordinary iron silicon boron alloy. © All right reserved.
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页码：291 / 298
页数：7
相关论文
共 13 条
  • [1] Shokrollahi H., The magnetic and structural properties of the most important alloys of iron produced by mechanical alloying, Materials and Design, 30, 9, (2009)
  • [2] Du Y., Study on preparation and properties of high frequency ironbased composite soft magnetic powder core, (2009)
  • [3] Li J.Y., He P., Study on improving the magnetic properties of Ni-Fe powder core, J.Magn. Mater. Device, 26, 3, (1995)
  • [4] Wei D., Liu S.Y., Zhu J.G., Et al., Prepration of soft magnetic sendust powders and effect of particle size matching on the properties of powder core, J. Magn. Mater. Device, 45, 3, (2014)
  • [5] Takemoto S., Saito T., Effects of crystal grain size and particle size on core loss for Fe-Si compressed cores, Materials Science Forum, 534-536, (2007)
  • [6] Xu Y.C., Study on temperature and pressure of Fe_(78)Si_9B_(13) amorphas soft magnetic powder core, (2015)
  • [7] Liu H.J., Study on particle size proportion of metal soft magnetic powder core, (2016)
  • [8] Huang L., Study on preparation process and performagnce of FeSiB magnetic powder core, (2018)
  • [9] Li T.Y., Ding W.T., Geng W.B., Et al., Influence of soft magnetic powder characteristics on the performance of metallic soft magnetic powder core, Materials Review, 32, z1, (2018)
  • [10] Liu F.F., Baker A.P., Weng L.Q., Et al., Study of phosphate coatings for Fe based soft magnetic composites, Development and Application of Materials, 22, 5, (2007)
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