Magnetic properties of soft magnetic composites fabricated by injection molding of bimodal amorphous Fe73Si11B11C3Cr2 and crystalline Fe50Co50 powders

Ma，Rui1,2; Chang，Liang3; Dong，Yaqiang3; Ye，Shulong2; Si，Jiajia4; Yao，Kefu4; Yu，Peng2

2021

10.1016/j.powtec.2021.11.030

POWDER TECHNOLOGY   影响因子和分区

0032-5910

1873-328X

Hybrid soft magnetic composites are fabricated using bimodal amorphous FeSiBCCr and crystalline FeCo powders via MIM. When FeSiBCCr powder is partially substituted by FeCo powder which forms a bimodal distribution, permeability decreases with, but the saturation induction increases with increasing fraction of FeCo. Composites with high fraction of FeCo have good magnetic saturation and improved bias performances. Core loss is more influenced by particle size distribution. Finer FeCo powders are distributed in interstices and lead to a more loosely packed structure. On one hand, loosely packed structure increasing the interspacing of magnetic powders gives rise to low eddy current loss. On the other hand, loosely packed structure increases flowability of powders and results in low-viscosity feedstock, which can be molded with low injection pressure resulting in small internal stresses, giving rise to low core loss. As a result, hybrid SMCs with 50% fraction of FeCo powder exhibits the best comprehensive magnetic properties.

Amorphous Core loss Magnetic property Metal injection molding Soft magnetic composite

EI

英语

通讯

China Postdoctoral Science Foundation[2021M691401];National Natural Science Foundation of China[51801111];National Natural Science Foundation of China[51801229];

20215211399834

Binary alloys ; Fabrication ; Hybrid composites ; Injection molding ; Magnetic cores ; Magnetism ; Metal molding ; Metallic matrix composites ; Metals ; Particle size ; Particle size analysis ; Powder metals ; Silicon

Metallurgy and Metallography:531 ; Foundry Practice:534.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Materials Science:951

CHEMISTRY

2-s2.0-85121815718

Scopus

1.School of Materials Science and Engineering,Harbin Institute of Technology,Harbin,150001,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo,Zhejiang,315201,China
4.School of Materials Science and Engineering,Tsinghua University,Beijing,100084,China

Ma，Rui,Chang，Liang,Dong，Yaqiang,et al. Magnetic properties of soft magnetic composites fabricated by injection molding of bimodal amorphous Fe73Si11B11C3Cr2 and crystalline Fe50Co50 powders[J]. POWDER TECHNOLOGY,2021,397.

Ma，Rui.,Chang，Liang.,Dong，Yaqiang.,Ye，Shulong.,Si，Jiajia.,...&Yu，Peng.(2021).Magnetic properties of soft magnetic composites fabricated by injection molding of bimodal amorphous Fe73Si11B11C3Cr2 and crystalline Fe50Co50 powders.POWDER TECHNOLOGY,397.

Ma，Rui,et al."Magnetic properties of soft magnetic composites fabricated by injection molding of bimodal amorphous Fe73Si11B11C3Cr2 and crystalline Fe50Co50 powders".POWDER TECHNOLOGY 397(2021).