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Loss-Separation Study on Silica-insulated Gas-atomized Fe-Si-Al Soft Magnetic Composites

机译：二氧化硅绝缘气体雾化Fe-Si-Al软磁复合材料的损耗分离研究

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摘要

Fe-Si-Al soft magnetic composites were composed of gas-atomized Fe-9.6wt.%Si-5.4wt.%Al alloy powders insulated with silica nanoparticles. The influence of silica insulation content on the core's magnetic properties was studied. It was found that increasing the silica mass ratio deteriorated the effective permeability and core loss in the frequency range of 40-120 kHz, while improved the quality factor at 100 kHz and DC-bias performance. The effective demagnetizing field reflected by density and the core's volume resistivity may cause the variations of these magnetic parameters. Loss separation fitting was performed using the Bertotti formula, indicating that silica insulation increased the hysteresis loss and reduced the eddy-current loss. The hysteresis loss took over at the frequency lower than 120 kHz in this work. With increasing the frequency, the eddy-current loss grew more quickly than the hysteresis loss. Therefore, different methods should be adopted to reduce the core loss according to the core's application frequency.
机译：Fe-Si-Al软磁复合材料组成的gas-atomized fe - 9.6 - wt. si - 5.4 wt %。绝缘的二氧化硅纳米粒子。硅绝缘上的内容的影响核心的磁特性进行了研究。发现增加了硅质量比恶化的有效渗透率和核心损失40 - 120 kHz的频率范围在100 kHz和改进质量因素直流偏置的性能。实地反映在密度和核心的体积电阻率可能引起的变化磁参数。使用Bertotti公式,执行指示绝缘硅增加了磁滞损失和减少涡流损失。磁滞损耗接管的频率更低120千赫。频率,涡流损失增长更快快于磁滞损耗。应该采用不同的方法来减少核心损失根据核心的应用程序频率。

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  • 来源
    《Journal of Magnetics》 |2020年第2期|223-228|共6页
  • 作者

    T. T. Xu; B. W. Zhang; Z. ShiW. W. GuanK. WanX. Y. ShiW. LiuH. L. SuZ. Q. ZouY. W. Du;

  • 作者单位

    Engineering Research Center of High Performance Copper Alloy Materials and Processing, Ministry of Education, Hefei University of Technology, Hefei 230009, People's Republic of China, School of Materials Science and Engineering and Anhui Provincial Key La;

    Huaian Engineering Research Center of Soft Magnetic Powder Cores and Devices, Jiangsu Red Magnetic Materials Incorporation, Xuyi 211700, People's Republic of China, Anhui Red Magneto-electric Technology Co., Ltd., Wuhu 241002, People's Republic of China;

    Anhui Red Magneto-electric Technology Co., Ltd., Wuhu 241002, People's Republic of China, National Laboratory of Solid State Microstructure and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China;

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