高频低损耗的Fe/亚微米FeNi软磁复合材料

doi:10.15541/jim20230599

无机材料学报

高频低损耗的Fe/亚微米FeNi软磁复合材料

何思哲¹, 王俊舟¹, 张勇¹, 费嘉维¹, 吴爱民¹, 陈意峰², 李强², 周晟³, 黄昊¹

1.大连理工大学材料科学与工程学院,辽宁省能源材料及器件重点实验室,大连 116024;
2.广东风华高新科技股份有限公司,肇庆 526199;
3.明新软磁科技（江苏）有限公司,昆山 215300

收稿日期:2023-12-29 修回日期:2024-03-20 出版日期:2024-03-30 网络出版日期:2024-03-30
作者简介:何思哲(1999-)，男，硕士研究生.E-mail: HSZ124@mail.dlut.edu.cn
基金资助:
新型电子元器件关键材料与工艺国家重点实验室开放基金(风华-2024-0064)

Fe/Submicron FeNi Soft Magnetic Composites with High Working Frequency and Low Loss

HE Sizhe¹, WANG Junzhou¹, ZHANG Yong¹, FEI Jiawei¹, WU Aimin¹, CHEN Yifeng², LI Qiang², ZHOU Sheng³, HUANG Hao¹

1. Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China;
2. Guangdong Fenghua Advanced Technology Holding Co., Ltd, Zhaoqing 526199, China;
3. Mingxin Soft Magnetic Technology (Jiangsu) Co., Ltd, Kunshan 215300, China

Received:2023-12-29 Revised:2024-03-20 Published:2024-03-30 Online:2024-03-30
About author:HE Sizhe (1999-), male, Master candidate.E-mai1: HSZ124@mai1.dlut.edu.cn
Supported by:
Open Fund of State Key Laboratory of Key Materials and Technologies for New Electronic Components (Fenghua 2024-0064)

摘要/Abstract

摘要： 高功率电力电子设备的应用对功率电感的高频电感性能和能量效率提出了更高的要求,因此迫切需要开发高频低损耗的软磁材料。为降低软磁复合材料的涡流损耗,获得高频、低损耗、大功率的一体成型电感。通过等离子体炬制备高纯度亚微米FeNi颗粒,并通过简化的有限元模型探讨了亚微米FeNi颗粒对软磁复合材料涡流损耗的影响。本工作制备了含不同质量分数亚微米FeNi颗粒的Fe/亚微米FeNi软磁复合材料,重点讨论亚微米FeNi颗粒对软磁复合材料及一体成型电感性能的影响。结果表明：与羰基铁粉制备的软磁复合材料相比,当亚微米FeNi颗粒含量为30%(质量分数)时,环形磁芯代表损耗的磁导率虚部μ″由1.57降至1.36,降低13.4%;一体成型电感在10 MHz条件下的品质因数Q由13升至20,提高53.8%;自谐振频率提高12.7%;饱和电流从2.148 A升至2.352 A。通过提高材料内阻和减小涡流流动区域的尺寸,亚微米FeNi颗粒能有效降低涡流损耗,提高软磁复合材料的高频磁导率稳定性。通过复合不同含量亚微米FeNi颗粒有望低成本、大规模地获得高频低损耗、综合性能良好的一体成型电感。

关键词: 软磁复合材料, 一体成型电感, 亚微米FeNi颗粒, 涡流, 品质因数

Abstract: The application of high-power electronic equipment requires inductors with great high-frequency performance and energy efficiency, it is urgent to develop soft magnetic materials with high frequency and low loss. To reduce the eddy current loss of soft magnetic composites and obtain molded inductors with high working frequency, low loss, and high power. High purity submicron FeNi particles were prepared by plasma torch, and the effect of submicron FeNi particles on eddy current loss of soft magnetic composites was discussed by simplified finite element model. Soft magnetic composites and molded inductors were prepared by mixing carbonyl iron powder with different mass fractions of submicron FeNi particles. The influence of sub-micron FeNi particles on the properties of soft magnetic composites and molded inductors is discussed emphatically. When the content of submicron FeNi particles is 30% (in mass), the imaginary part of permeability (μ") of the ring core decreases from 1.57 to 1.36 (reduced by 13.4%), compared with that of the soft magnetic composites made of pure carbonyl iron powder. The quality factor Q of the molded inductors at 10 MHz increased from 13 to 20, an increase of 53.8%. The self-resonance frequency increased by 12.7%. The saturation current increased from 2.148 A to 2.352 A. Submicron FeNi particles can effectively reduce eddy current loss and improve the high frequency permeability stability of soft magnetic composites by increasing the internal resistance of materials and reducing the size of eddy current flow region. It is expected to obtain molded inductors with high frequency, low loss, and good comprehensive performance at low cost and on a large scale by compounding submicron FeNi particles with different contents.

Key words: soft magnetic composite, molded inductor, FeNi submicron particle, eddy current, quality factor

中图分类号:

TB333

何思哲, 王俊舟, 张勇, 费嘉维, 吴爱民, 陈意峰, 李强, 周晟, 黄昊. 高频低损耗的Fe/亚微米FeNi软磁复合材料[J]. 无机材料学报, DOI: 10.15541/jim20230599.

HE Sizhe, WANG Junzhou, ZHANG Yong, FEI Jiawei, WU Aimin, CHEN Yifeng, LI Qiang, ZHOU Sheng, HUANG Hao. Fe/Submicron FeNi Soft Magnetic Composites with High Working Frequency and Low Loss[J]. Journal of Inorganic Materials, DOI: 10.15541/jim20230599.

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高频低损耗的Fe/亚微米FeNi软磁复合材料

Fe/Submicron FeNi Soft Magnetic Composites with High Working Frequency and Low Loss

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