Magnetic properties of soft magnetic composites fabricated from amorphous Fe73Si11B11C3Cr2 powder by hot pressing under a low pressure

Ma，Rui1,2; Chang，Liang4; Ye，Shulong5; Xie，Hanzhong1; Xiao，Qiang4; Zhang，Lina4; Si，Jiajia3; Yu，Peng1

2023-08-01

10.1016/j.powtec.2023.118639

Powder Technology   影响因子和分区

0032-5910

1873-328X

Amorphous FeSiBCCr powders were coated with a layer of FeO through hydrothermal reactions. The coated powder was used to fabricate soft magnetic composites (SMCs) in which the eddy current was confined in individual amorphous particles by the insulating FeO layer, and the magnetic diluting effect, caused by non-magnetic insulating layer and widely reported in previous research, can be avoided, thanks to the ferromagnetic properties of FeO. The results indicated that when the coated powder was hot-pressed at temperatures near the glass transformation temperature of the metallic glass powder, SMCs with high density and good magnetic properties could be obtained under a low pressure of 600 MPa. The SMCs fabricated at 430 °C exhibited the best magnetic properties, having an effective permeability of 41(at 100 kHz) and a core loss of 707 kW/m (at 100 kHz, 50 mT). The properties could be further improved after the sample was annealed at 430 °C to release the internal stresses generated in hot pressing. As a result, the effective permeability was increased to 43(at 100 kHz) and the core loss was reduced to 498 kW/m (at 100 kHz, 50 mT) for the annealed sample.

Amorphous Glass transition temperature Hot pressing Magnetic property Soft magnetic composites

SCI ; EI

英语

第一

China Postdoctoral Science Foundation[2021M691401];Fundamental Research Funds for the Central Universities[22CX06022A];National Natural Science Foundation of China[51801111];National Natural Science Foundation of China[51801229];

Engineering

Engineering, Chemical

WOS:001010917900001

ELSEVIER

20232114119273

Chromium compounds ; Fabrication ; Glass ; Glass transition ; Hot pressing ; Magnetic cores ; Magnetite ; Silicon compounds

Magnetism: Basic Concepts and Phenomena:701.2 ; Chemical Operations:802.3 ; Glass:812.3

CHEMISTRY

2-s2.0-85159552330

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Postdoctoral Programme,Guosen Securities Co.,Ltd,Shenzhen,518048,China
3.School of Materials Science and Engineering,Hefei University of Technology,Hefei,230009,China
4.POCO Holding Co.,Ltd,Shenzhen,518052,China
5.Faculty of Materials Science,Shenzhen MSU-BIT University,Shenzhen,518172,China

Ma，Rui,Chang，Liang,Ye，Shulong,et al. Magnetic properties of soft magnetic composites fabricated from amorphous Fe73Si11B11C3Cr2 powder by hot pressing under a low pressure[J]. Powder Technology,2023,426.

Ma，Rui.,Chang，Liang.,Ye，Shulong.,Xie，Hanzhong.,Xiao，Qiang.,...&Yu，Peng.(2023).Magnetic properties of soft magnetic composites fabricated from amorphous Fe73Si11B11C3Cr2 powder by hot pressing under a low pressure.Powder Technology,426.

Ma，Rui,et al."Magnetic properties of soft magnetic composites fabricated from amorphous Fe73Si11B11C3Cr2 powder by hot pressing under a low pressure".Powder Technology 426(2023).