Preparation and characterization of carbonyl iron soft magnetic composites with magnesioferrite insulating coating layer

被引：16
作者：
Li, Shi-geng [1 ,2 ]
Liu, Ru-tie [1 ]
Xiong, Xiang [1 ]
机构：
[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China
[2] Pingxiang Univ, Dept Mat & Chem Engn, Pingxiang 337000, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2020年 / 30卷 / 11期
基金：
中国国家自然科学基金;
关键词：
soft magnetic composites; in-situ oxidation preparation; magnesioferrite insulating coating layer; annealing treatment; magnetic properties; PHOSPHATE COATINGS; XPS SPECTRA; FE3+ IONS; OXIDATION; MGFE2O4; NANOPARTICLES; FABRICATION; EVOLUTION;
D O I：
10.1016/S1003-6326(20)65443-7
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Spherical carbonyl iron (Fe) powders were coated with magnesioferrite (MgFe2O4) insulating coating layer and then mixed with epoxy-modified silicone resin (ESR). Soft magnetic composites (SMCs) were fabricated by compaction of the coated powders and annealing treatment. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffractometry (XRD) and X-ray photoelectron spectroscopy (XPS) revealed that the MgFe2O4 layer was coated on the surface of the iron powders. The magnetic properties of SMCs were determined using a vibrating sample magnetometer and an auto testing system for magnetic materials. The results showed that the SMCs prepared at 800 MPa and 550 degrees C exhibited a significant core loss of 167.5 W/kg at 100 kHz and 50 mT.
引用
收藏
页码：3067 / 3077
页数：11
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