Effect of phosphoric acid concentration on performance of FeSiCr@phosphate/sodium silicate soft magnetic powder cores

被引：0

作者：

Wang, Pu ^{[1
]}

Liu, Jiaqi ^{[1
]}

Wang, Chengfei ^{[1
]}

Zhu, Zhengqu ^{[1
]}

Pang, Jing ^{[2
]}

Zhang, Jiaquan ^{[1
]}

机构：

[1] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing

[2] Qingdao Yunlu Advanced Materials Technology Co. Ltd., Qingdao

来源：

Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2024年 / 55卷 / 08期

关键词：

corrosion resistance; FeSiCr alloy; insulated coating; soft magnetic powder cores; soft magnetic properties;

D O I：

10.11817/j.issn.1672-7207.2024.08.003

中图分类号：

学科分类号：

摘要：

FeSiCr@phosphate/sodium silicate soft magnetic powder cores were prepared based on the powder metallurgy process. Experimental methods such as scanning electron microscopy(SEM), X-ray diffraction(XRD) and salt spray with loss separation calculations were used to investigate the effects of different mass fractions of phosphoric acid(0-1.5%) on the soft magnetic properties and corrosion resistance of FeSiCr powder cores. The results show that the density and direct current bias performance of the magnetic powder core can be improved by moderately increasing the phosphoric acid concentration, and the core loss can also be significantly reduced. However, excessive phosphoric acid concentration will deteriorate the uniformity of the insulating layer and increase the resistance to the movement of the domain walls, leading to the increase in the core loss and decrease in the permeability. In addition, the corrosion resistance of the magnetic powder core decreases with the increase of phosphoric acid concentration. When the phosphoric acid addition is 1.0%, the prepared FeSiCr magnetic powder core has the optimum soft magnetic performance with permeability of 38.3(100 kHz) and the total loss of 646.24 mW/cm3(1 MHz and 20 mT). © 2024 Central South University of Technology. All rights reserved.

引用

页码：2879 / 2886

页数：7

共 22 条

[1] WANG Pu, ZHU Zhengqu, LIU Jiaqi, Et al., Industrial-scale fabrication of FeSiCr magnetic powder cores with high magnetic permeability and low loss, Journal of Alloys and Compounds, 962, (2023)
[2] LIU Wei, WU Peng, NIU Yanzhao, Et al., Hydrolytic synthesis of titanium oxide insulation layer and its effect on powder core, Journal of Materials Engineering, 51, 9, pp. 176-182, (2023)
[3] CHEN Cunguang, CUI Qianyue, YU Chengwei, Et al., Microstructure and properties of graphite/Cu-Zr composites with high thermal conductivity and low coefficient of thermal expansion, Journal of Central South University (Science and Technology), 51, 11, pp. 3072-3080, (2020)
[4] LI Qingda, LIAN Fazeng, YOU Junhua, Et al., Study on properties of Fe-Si-Al soft magnetic powder cores, Journal of Functional Materials, 40, 3, pp. 369-371, (2009)
[5] LAN Haixin, CHEN Shiqi, GAO Zhi, Et al., Electronic structure and magnetic properties of Fe@SiO<sub>2</sub> soft magnetic composites, Journal of Central South University(Science and Technology), 54, 4, pp. 1272-1280, (2023)
[6] LIU Jiaqi, PANG Jing, WANG Pu, Et al., Research progress of liquid metal atomization technology and preparation of its amorphous powders, China Metallurgy, 32, 2, pp. 1-14, (2022)
[7] WANG Pu, LIU Jiaqi, DONG Yannan, Et al., Industrial-scale fabrication of amorphous magnetic powder cores with excellent high-frequency magnetic properties: Optimization for kinds and content of insulating agents, Journal of NonCrystalline Solids, 602, (2023)
[8] WU Shen, SUN Aizhi, XU Wenhuan, Et al., Research progress in insulation processing technology of soft magnetic composites, Materials Review, 27, 9, pp. 5-9, (2013)
[9] LONG Haiming, WU Xiaojie, LU Yunkun, Et al., Effect of polyimide-phosphating double coating and annealing on the magnetic properties of Fe-Si-Cr SMCs, Materials, 15, 9, (2022)
[10] LI Hongxia, YANG Hua, LI Zhuangzhuang, Et al., Multifunctional FeSiAl soft magnetic composites with inorganic-organic hybrid insulating layers for high mechanical strength, low core loss and comprehensive anti-corrosion, Journal of Electronic Materials, 51, 7, pp. 3418-3429, (2022)

← 1 2 3 →