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Core-loss behavior of Fe-based nanocrystalline at high frequency and high temperature

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Abstract

We measured the loss of Fe73.5Si15.5B7Cu1Nb3 nanocrystalline magnetic cores prepared by winding an amorphous alloy ribbon into a ring and annealing at 550 °C for 1 h. The dynamic loss of the magnetic core was tested in an oil bath environment from 30 to 200 °C, with a frequency range from 10 to 100kHz and at Bm = 300mT. The coercivity, magnetic induction and permeability of the core deteriorate as the ambient temperature rises. At 100 kHz, the loss decreases from 75.87 W/kg to 72.34 W/kg when temperature increases from 30 to 130 °C and then increases to 73.65 W/kg when temperature increases to 200 °. The loss of the magnetic core shows a trend of first decreasing and then increasing with ambient temperature, and the trend becomes stronger at higher frequencies. Based on Bertotti’s loss separation theory, the reduction of excess loss is the main reason for the reduction of core loss at high temperature, and the excess loss and hysteresis loss are in a competitive relationship. The reason for the decrease in excess loss is thought to be the rise in coercivity.

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Data availability

The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The work was supported by the National Natural Science Foundation of China (Grant No. 52071089); Guangdong Major Project of Basic and Applied Basic Research (Grant No. 2019B030302010)

Funding

The work was supported by the National Natural Science Foundation of China (Grant No. 52071089); Guangdong Major Project of Basic and Applied Basic Research (Grant No. 2019B030302010).

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Authors and Affiliations

  1. School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, China

    Miaowen Deng, Yuanzheng Yang, Peixin Fu, Shunxing Liang, Xiaoling Fu, Weitong Cai & Pingjun Tao

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  1. Miaowen Deng
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  2. Yuanzheng Yang
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  3. Peixin Fu
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  4. Shunxing Liang
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  7. Pingjun Tao
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Contributions

All authors made contributions to the planning and design of the study. Miaowen Deng: preparation of core samples, formal analysis (magnetic part), and wrote the paper. Yuanzheng Yang: initiation of the work, funding acquisition, and article editing and revising. Peixin Fu and Shunxing Liang: characterizations of core properties. Xiaoling Fu, Weitong Cai and Pingjun Tao: resources, formal analysis (structural parts).

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Correspondence to Yuanzheng Yang.

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Deng, M., Yang, Y., Fu, P. et al. Core-loss behavior of Fe-based nanocrystalline at high frequency and high temperature. J Mater Sci: Mater Electron 35, 856 (2024). https://doi.org/10.1007/s10854-024-12600-w

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