Modulation of demagnetization field and DC bias performance of carbonyl iron molded inductors by mixing submicron FeSi particles

IF 4.2 2区 工程技术 Q2 ENGINEERING, CHEMICAL
Yong Zhang , Junzhou Wang , Xinyan Huang , Sizhe He , Panjie Shao , Aimin Wu , Xuefeng Zhang , Zhaohui Yang , Zhongli Jiang , Dongmei Feng , Hao Huang
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Abstract

In the modern era of advanced electronic equipment, the capacity of electronic components to function effectively in high-current environments, i.e. DC bias performance, has become a subject of increasing interest. The use of magnetic powder composite technology has been shown to enhance the DC bias performance of electronic components. In this paper, the submicron spherical FeSi powders, which were prepared by DC arc plasma method, mixed with micron-sized carbonyl iron powders (CIPs) to prepare CIP/FeSi soft magnetic composites (SMCs) and molded inductors. It is shown that the mixing of FeSi powders inevitably reduces the permeability of the SMCs, but provides modulatable DC bias performance. The study found that the SMCs’ magnetic permeability was 32.46, which is a 8.7% decrease. The saturation current was 2.86 A, which is a 28.8% increase, and the DC bias performance was significantly improved. In this paper, the mechanism of the mixed FeSi magnetic powder to improve the DC bias performance of SMCs is elucidated by combining the periodic modeling of mixed magnetic powders and the analysis of FeSi powder structure and properties. This study provides a theoretical basis for the composition and structure design of soft magnetic composites, and the prepared SMCs can be used in high-current operating environments, which have a good application prospect.

Abstract Image

混合亚微米FeSi粒子调制羰基铁模制电感器的退磁场和直流偏置性能
在先进电子设备的现代,电子元件在大电流环境下有效工作的能力,即直流偏置性能,已经成为人们越来越感兴趣的课题。磁粉复合技术的应用已被证明可以提高电子元件的直流偏置性能。本文采用直流电弧等离子体法制备亚微米球形FeSi粉末,与微米级羰基铁粉(CIP)混合制备了CIP/FeSi软磁复合材料(SMCs)和模压电感器。结果表明,FeSi粉末的混合不可避免地降低了SMCs的磁导率,但提供了可调的直流偏置性能。研究发现,SMCs的磁导率为32.46,降低了8.7%。饱和电流为2.86 A,提高28.8%,直流偏置性能得到明显改善。本文通过对混合磁粉的周期性建模和对FeSi粉末结构和性能的分析,阐明了混合FeSi磁粉改善SMCs直流偏置性能的机理。该研究为软磁复合材料的组成和结构设计提供了理论依据,制备的SMCs可用于大电流工作环境,具有良好的应用前景。
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来源期刊
Advanced Powder Technology
Advanced Powder Technology 工程技术-工程:化工
CiteScore
9.50
自引率
7.70%
发文量
424
审稿时长
55 days
期刊介绍: The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)
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