智能电表功率电感器所用铁硅磁芯的结构演变与性能

IF 2.2 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Electronic Materials Pub Date : 2024-03-18 DOI:10.1007/s11664-024-11007-x

Lihong Gan, Zhipeng Zheng, Yinchen Liu, Jun Zhao, Min Yan, Zhibin Wang, Tongqiang Xiong, Bo Feng

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引用次数: 0

摘要

通过烧结 Fe-6.5wt.%Si/Co3O4 复合粉末制备了具有 CoO-SiOx-Co 复合涂层的铁硅磁芯。系统研究了 Co3O4 涂层含量和结构演变机制对 Fe-Si 磁芯磁性能的影响。结果表明，热压烧结过程中的高温促进了 Co3O4 涂层与 Fe-6.5wt.%Si 磁粉中的硅原子之间的固态界面反应，从而形成了电绝缘相 SiOx 和铁磁相 Co。形成的 CoO-SiOx-Co 复合涂层能有效削弱涡流效应和磁稀释效应。当 Co3O4 涂层含量增加时，Fe-Si 铁芯的饱和磁化率降低，但仍保持较高值。磁损呈现先减小后增大的趋势。当 Co3O4 涂层含量为 5.0 wt.%时，Fe-Si 铁芯表现出相对优越的磁性能，如高饱和磁化率（192.9 emu/g）、高磁导率（98）和低磁损（343.3 kW/m3，0.02 T/50 kHz）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Structure Evolution and Performance of Fe-Si Core Used in Power Inductors of Smart Meters

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Structure Evolution and Performance of Fe-Si Core Used in Power Inductors of Smart Meters

Fe-Si cores with a CoO-SiO_x-Co composite coating layer were prepared by sintering Fe-6.5wt.%Si/Co₃O₄ composite powders. The effects of Co₃O₄ coating content and structural evolution mechanism on magnetic properties of the Fe-Si cores were systematically studied. The results indicate that the high temperature during hot pressing sintering promotes solid-state interface reactions between Co₃O₄ coating and Si atoms from the Fe-6.5wt.%Si magnetic powder, resulting in the formation of electrical insulation phase SiO_x and ferromagnetic phase Co. The formed CoO-SiO_x-Co composite coating layer can effectively weaken the eddy current effect and magnetic dilution effect. When the Co₃O₄ coating content increases, the saturation magnetization of Fe-Si core decreases but still maintains a high value. And the magnetic loss shows a trend of first decreasing and then increasing. When the Co₃O₄ coating content is 5.0 wt.%, the Fe-Si core exhibits relatively superior magnetic properties, such as high saturation magnetization (192.9 emu/g), high permeability (98), and low magnetic loss (343.3 kW/m³, 0.02 T/50 kHz).

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.