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Enhanced magnetic properties of FeSiAl soft magnetic composites prepared by utilizing phosphate: PSA as insulating layer

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Abstract

The phosphating treatment method has been extensively applied in the field of insulating soft magnetic powders because of its simplicity and ease of operation; however, the specific nanoscale morphology of phosphate coating layers and the interface/connection/interaction with the outer resin are still unclear. In this study, soft magnetic powder cores (SMPCs) with a nanoporous-structured phosphate coating were fabricated, in which the coating has a beneficial adsorption effect on the outer resin and can enhance the bonding force between the organic/inorganic coating. Optimized soft magnetic properties were obtained for the SMPCs with a phosphoric acid content of 0.6 wt%, including a high effective permeability of 61, low core loss of 134.6 mW/cm3 (measured at 100 mT, 50 kHz), and high DC bias performance of 56% under a superimposed field of 100 Oe due to the favorable interactions between the insulating coating layers. These properties can be used to manufacture micro-magnetic components.

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Data availability

The data used to support the findings of this study are available from the corresponding author upon request.

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Funding

Funding was provided by Youth Innovation Promotion Association CAS (Grant No. 2021294), Science and Technology Service Network Initiative of the Chinese Academy of Sciences (Grant No. KFJ-STS-QYZD-2021-07-002), the S&T Innovation 2025 Major Special Program (Grant Nos. 2018B10085, 2021Z038), the National Natural Science Foundation of China (Grant No. U1809216), and K. C. Wong Magna Fund in Ningbo University.

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Authors and Affiliations

  1. Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo, 315211, China

    Hao Lu, Xincai Liu & Zhonghao Liu

  2. Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, CAS Key Laboratory of Magnetic Materials and Devices, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo, 315201, Zhejiang, China

    Hao Lu, Yaqiang Dong, Zhonghao Liu, Yan Ma, Yue Wu, Aina He, Jiawei Li & Xinmin Wang

  3. University of Chinese Academy of Sciences, Beijing, 100049, China

    Yaqiang Dong, Aina He & Jiawei Li

Authors
  1. Hao Lu
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  2. Yaqiang Dong
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  3. Xincai Liu
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  4. Zhonghao Liu
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  5. Yan Ma
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  6. Yue Wu
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  7. Aina He
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  8. Jiawei Li
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  9. Xinmin Wang
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Contributions

HL: Conceptualization, Investigation, Writing—Original Draft, Visualization, YD: Conceptualization, XL: Supervision, ZL: Writing –review & editing, YM: Conceptualization, YW: Validation, AH: Writing—Review & Editing, JL: Writing—Review & Editing, XW: Supervision.

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Correspondence to Yaqiang Dong or Xincai Liu.

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Lu, H., Dong, Y., Liu, X. et al. Enhanced magnetic properties of FeSiAl soft magnetic composites prepared by utilizing phosphate: PSA as insulating layer. J Mater Sci: Mater Electron 33, 10131–10141 (2022). https://doi.org/10.1007/s10854-022-08003-4

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  • DOI: https://doi.org/10.1007/s10854-022-08003-4

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