期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 452, 期 -, 页码 5-9出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2017.12.005
关键词
Soft magnetic composites; Inorganic-organic hybrid; Insulation coating; Effective permeability; Core loss
资金
- Public Technology Application Research Projects of Zhejiang Province [2016C31008]
- National Natural Science Foundation of China [NSFC-11404284]
- NPL-CAEP Project [2015DB04]
- Program for Innovative Research Team in University of Ministry of Education of China [IRT13R54]
Three inorganic-organic hybrids have been designed by incorporating epoxy-modified silicone resin (ESR) with SiO2, Fe3O4 and their mixture in the application as the coating of Fe soft magnetic composites (SMCs). The introduced SiO2 nanoparticles are well dispersed in the ESR, while the Fe3O4 tends to agglomerate or even separate from the ESR. Simultaneous addition of the SiO2 and Fe3O4 gives rise to satisfactory distribution of both nanoparticles and optimized magnetic performance of the SMCs with high permeability (124.6) and low loss (807.8 mW/cm(3)). On one hand, introduction of the ferromagnetic Fe3O4 reduces the magnetic dilution effect, which is beneficial for improved magnetization and permeability. On the other hand, SiO2 incorporation prevents the agglomeration of the Fe3O4 nanoparticles and gives rise to increased electrical resistivity for reduced core loss as well as enhanced mechanical strength of the SMCs. (C) 2017 Elsevier B.V. All rights reserved.
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