The influences of matrix materials on the magnetic and mechanical properties of Fe78Si9B13 soft magnetic composites fabricated by injection molding

Ma，Rui1,2; Yu，Peng2

2021-07-01

10.1016/j.materresbull.2021.111256

MATERIALS RESEARCH BULLETIN   影响因子和分区

0025-5408

1873-4227

Soft magnetic composites are fabricated via metal injection molding (MIM) of amorphous FeSiB powder in which three kinds of binders (PA+SA, HDPE+SA, PA+HDPE+SA) are chosen as matrix materials. Because of the interaction between amino in PA and carboxyl in SA, the composite having PA+SA matrix possesses a very good bonding between the matrix and the FeSiB particles. Therefore, this sample is pore-free and has the best mechanical and dynamic magnetic properties among the three, having a compressive strength of 52.3 MPa, an effective permeability of 18.3, a coercivity of 34.6 A/m and a total core loss of 1489.3 kW/m at the frequency of 100 kHz (50 m T). However, when the PA is replaced by HDPE in the matrix, the bonding between the matrix and the metal particles become weaker, leading to decreased magnetic and mechanical properties. Compared to the composites fabricated by conventional compaction method reported in other researches, the soft magnetic composites fabricated by injection molding exhibit much improved DC-bias property, with the incremental permeability measured at a frequency of 100 kHz decreasing only by 18 % at a bias magnetic field of 100 Oe.

Dynamic magnetic properties Injection molding Metallic glass Soft magnetic composites

SCI ; EI

英语

通讯

Shenzhen Science and Technology Innovation Committee[KQJSCX20180322152424539]

Materials Science

Materials Science, Multidisciplinary

WOS:000641141700012

PERGAMON-ELSEVIER SCIENCE LTD

20210909982485

Binders ; Compressive strength ; Fabrication ; Injection molding ; Iron compounds ; Magnetism ; Mechanical permeability ; Metal molding ; Silicon ; Silicon compounds

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 ; Chemical Agents and Basic Industrial Chemicals:803

MATERIALS SCIENCE

2-s2.0-85101372195

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

Ma，Rui,Yu，Peng. The influences of matrix materials on the magnetic and mechanical properties of Fe78Si9B13 soft magnetic composites fabricated by injection molding[J]. MATERIALS RESEARCH BULLETIN,2021,139.

Ma，Rui,&Yu，Peng.(2021).The influences of matrix materials on the magnetic and mechanical properties of Fe78Si9B13 soft magnetic composites fabricated by injection molding.MATERIALS RESEARCH BULLETIN,139.

Ma，Rui,et al."The influences of matrix materials on the magnetic and mechanical properties of Fe78Si9B13 soft magnetic composites fabricated by injection molding".MATERIALS RESEARCH BULLETIN 139(2021).