Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8153552 | Journal of Magnetism and Magnetic Materials | 2018 | 28 Pages |
Abstract
This paper investigates the structure and magnetic properties of Ni-Cu-Zn ferrite-silicone coated iron-based soft magnetic composites (SMCs). Scanning electron microscopy coupled with a energy-dispersive spectroscopy (EDS) analysis revealed that the Ni-Cu-Zn ferrite and silicone resin were uniformly coated on the surface of iron powders. By controlling the composition of the coating layer, low total core loss of 97.7â¯mW/cm3 (eddy current loss of 48â¯mW/cm3, hysteresis loss of 49.7â¯mW/cm3, measured at 100â¯kHz and 0.02â¯T) and relatively high effective permeability of 72.5 (measured at 100â¯kHz) were achieved. In addition, the as-prepared SMCs displayed higher electrical resistivity, good magnetic characteristics over a wide range of frequencies (20-200â¯kHz) and ideal the D-C bias properties (more than 75% at Hâ¯=â¯50â¯Oe). Furthermore, higher elastic modulus and hardness of SMCs, which means that the coating layer has good mechanical properties and is not easily damaged during the pressing process, were obtained in this paper. The results of this work indicate that the Ni-Cu-Zn ferrite-silicone coated SMCs have desirable properties which would make them suitable for application in the fields of the electric-magnetic switching devices, such as inductance coils, transformer cores, synchronous electric motors and resonant inductors.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Wangchang Li, Wei Wang, Junjun Lv, Yao Ying, Jing Yu, Jingwu Zheng, Liang Qiao, Shenglei Che,