Interfacial structure design of FeSiB-based amorphous soft magnetic composites for excellent thermal stability and electromagnetic performance

IF 4.2 2区 工程技术 Q2 ENGINEERING, CHEMICAL Advanced Powder Technology Pub Date : 2024-08-07 DOI:10.1016/j.apt.2024.104620
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Abstract

Narrow process window of stress relieving annealing limits the development of amorphous soft magnetic composites (SMCs) with excellent combined electromagnetic performance. In addition, flaky amorphous powder is difficult to be uniformly coated by insulation layer due to the edge effect. To address these issues, the FeSiBCCr fine amorphous powder is introduced into the SMC based on flaky FeSiB amorphous powder. On the one hand, the 12 wt% addition of FeSiBCCr powder improves the thermal stability and enhances the annealing temperature by ∼ 20 ℃, broadening the annealing window of SMCs. On the other hand, the fine spherical FeSiBCCr amorphous powder can improve the electrical resistivity of SMC and act as a filler for large-size flaky FeSiB amorphous powder. The improved annealing temperature and the microstructure modification are beneficial to improving the combined electromagnetic properties of amorphous SMCs, including permeability, direct current bias performance and core loss. As a result, the FeSiB SMCs with 12 wt% FeSiBCCr addition possess the high effective permeability μe of 46.5 at 100 kHz, high percent effective permeability %μe of 74.5 % at 100 kHz and 100 Oe, and low total core loss of 222 kW/m3 at 100 kHz and 50 mT. This work proposes a potential strategy for the industry to fabricate the SMCs with high combined electromagnetic performance.

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设计基于 FeSiB 的非晶软磁复合材料的界面结构,实现优异的热稳定性和电磁性能
应力消除退火的工艺窗口狭窄,限制了具有优异综合电磁性能的非晶软磁复合材料(SMC)的发展。此外,由于边缘效应,片状非晶粉末很难被绝缘层均匀包覆。为解决这些问题,在片状 FeSiB 非晶粉末的基础上,在 SMC 中引入了 FeSiBCCr 细非晶粉末。一方面,添加 12 wt% 的 FeSiBCCr 粉末提高了热稳定性,使退火温度提高了 ∼ 20 ℃,拓宽了 SMC 的退火窗口。另一方面,细小的球形 FeSiBCCr 非晶粉末可提高 SMC 的电阻率,并可作为大尺寸片状 FeSiB 非晶粉末的填充物。退火温度的提高和微观结构的改变有利于改善非晶 SMC 的综合电磁特性,包括磁导率、直流偏压性能和磁芯损耗。因此,添加了 12 wt% FeSiBCCr 的 FeSiB SMC 在 100 kHz 时具有 46.5 的高有效磁导率μe,在 100 kHz 和 100 Oe 时具有 74.5% 的高百分比有效磁导率%μe,在 100 kHz 和 50 mT 时具有 222 kW/m3 的低总磁芯损耗。这项研究为业界提出了一种制造具有高综合电磁性能的 SMC 的潜在策略。
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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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