Improved soft magnetic properties of Fe-based amorphous powder cores by softening phenolic resin shell

被引：2

作者：

Li, H. Z. ^{[1
]}

He, Z. C. ^{[1
]}

Chen, T. ^{[1
]}

Yan, A. ^{[1
]}

Huang, Z. Y. ^{[1
]}

Yan, Y. Q. ^{[2
]}

Ke, H. B. ^{[2
]}

Wang, W. H. ^{[2
]}

Yang, C. ^{[1
]}

机构：

[1] South China Univ Technol, Natl Engn Res Ctr Near Net Shape Forming Met Mat, Guangdong Prov Key Lab Proc & Forming Adv Met Mat, Guangzhou 510640, Peoples R China

[2] Songshan Lake Mat Lab, Dongguan 523808, Peoples R China

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2024年 / 636卷

基金：

中国国家自然科学基金;

关键词：

Amorphous powder core; Core-shell structure; Magnetic properties; MICROSTRUCTURE; NANOPARTICLES;

D O I：

10.1016/j.jnoncrysol.2024.123013

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, the minor alcohol was innovatively added to soften the hard phenolic-resin insulation shell which greatly improved the flowability of the core-shell (amorphous powder-insulating layer) particles during the molding process, effectively reducing damage to the coating and resulting in a higher density of powder cores (PC). Importantly, the permeability of the obtained PC was improved by 31 % at a softener content of 1.5 wt.%, and the corresponding core loss (50 mT, 100 kHz) was reduced by 45 % from 70.41 kW/m3 to 38.56 kW/m3. Moreover, the PC also exhibited improved DC bias and resistivity. Fundamentally, the high fluidity of the coreshell particles with alcohol softeners radically and effectively reduces the friction between the particles, thus improving the resistivity and reducing the air gaps in the PC, ultimately leading to lower eddy current losses and better magnetization.

引用

页数：8

共 32 条

[1]

Bello S.A., 2015, Tribol. Ind, V37, P500

[2] GENERAL-PROPERTIES OF POWER LOSSES IN SOFT FERROMAGNETIC MATERIALS [J].