Influence of boron content in iron oxide on performance of Mn-Zn ferrites

  • Cheng-feng YuEmail author
  • Yu-guang Li
  • Hui-yu Xu
  • Jin-sheng Gao


The ferrites of PC30 (Mn-Zn ferrites) were prepared by using a dry processing route. The effect of Mn-Zn ferrites doped with H3BO3 was investigated on the basis of microstructure analysis. The results of the samples doped with H3BO3 less than 5 × 10−5 showed that the doping had no significant effect on power loss, initial permeability, fine grain microstructure, and density of Mn-Zn ferrites. With the further increase in H3BO3 doping (up to 1 × 10−4), the microstructure of Mn-Zn ferrites is in the critical state between fine grain and “sandwich”, and the initial permeability and density of Mn-Zn ferrites begin falling quickly; the increased H3BO3 doping also results in deteriorated power loss properties. Thus, the control of the boron content in iron oxide is of utmost importance for the quality of Mn-Zn ferrites in producing process.

Key words

iron oxide Mn-Zn ferrite boron content initial permeability 


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Copyright information

© China Iron and Steel Research Institute Group 2010

Authors and Affiliations

  • Cheng-feng Yu
    • 1
    • 2
    Email author
  • Yu-guang Li
    • 2
  • Hui-yu Xu
    • 3
  • Jin-sheng Gao
    • 1
  1. 1.College of Resource and Environmental EngineeringEast China University of Science and TechnologyShanghaiChina
  2. 2.Technology and Quantity Management DepartmentBaoshan Iron and Steel Co LtdShanghaiChina
  3. 3.Shanghai Baosteel Tiantong Magneitic Materials Co LtdShanghaiChina

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