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Fe-6.5 wt%Si soft magnetic composites with significant improvement of magnetic properties by compositing nano-MnZn ferrites.

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Title: Fe-6.5 wt%Si soft magnetic composites with significant improvement of magnetic properties by compositing nano-MnZn ferrites.
Authors: Yang, Tiansheng1,2,3 (AUTHOR), Lu, Kechao1,3 (AUTHOR), Wang, Jian1,2,3 (AUTHOR), Xu, Jia1,3 (AUTHOR), Zheng, Zhigang2 (AUTHOR), Liu, Xin1,3 (AUTHOR) liuxin@gdinm.com
Source: Journal of Alloys & Compounds. Jul2022, Vol. 909, pN.PAG-N.PAG. 1p.
Subjects: Magnetic properties, Ferrites, Magnetic alloys, Decomposition method, Electrical resistivity, Permeability
Abstract: A novel soft magnetic composites (SMCs) was prepared by Fe-6.5 wt%Si/nano-MnZn ferrites composite powders in this work. The nano-MnZn ferrites (~ 20 nm) were synthesized by thermal decomposition method. The microstructure and electromagnetic characteristics of Fe-6.5 wt%Si/nano-MnZn ferrites SMCs were investigated in details. The results showed that the effective permeability increased firstly and then decreased with increasing nano-MnZn ferrites contents from 0 to 4 wt%. Moreover, appropriate added amounts of nano-MnZn ferrites can reduce the hysteresis losses of the SMCs. The SMCs with 2 wt% nano-MnZn ferrites and annealed at 400 ℃ have the optimum comprehensive performances with effective permeability of 142.2 (increased by 47%), total core losses of 816 mW/cm3 (decreased by 12%) and acceptable electrical resistivity of 3.18 Ω·cm. • Fe-6.5 wt%Si/ nano-MnZn ferrites soft magnetic composites were prepared. • Nano-ferrites play a key role in ensuring adjacent Fe-Si particles connective. • Permeability and core losses were improved by compositing nano-ferrites. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:A novel soft magnetic composites (SMCs) was prepared by Fe-6.5 wt%Si/nano-MnZn ferrites composite powders in this work. The nano-MnZn ferrites (~ 20 nm) were synthesized by thermal decomposition method. The microstructure and electromagnetic characteristics of Fe-6.5 wt%Si/nano-MnZn ferrites SMCs were investigated in details. The results showed that the effective permeability increased firstly and then decreased with increasing nano-MnZn ferrites contents from 0 to 4 wt%. Moreover, appropriate added amounts of nano-MnZn ferrites can reduce the hysteresis losses of the SMCs. The SMCs with 2 wt% nano-MnZn ferrites and annealed at 400 ℃ have the optimum comprehensive performances with effective permeability of 142.2 (increased by 47%), total core losses of 816 mW/cm3 (decreased by 12%) and acceptable electrical resistivity of 3.18 Ω·cm. • Fe-6.5 wt%Si/ nano-MnZn ferrites soft magnetic composites were prepared. • Nano-ferrites play a key role in ensuring adjacent Fe-Si particles connective. • Permeability and core losses were improved by compositing nano-ferrites. [ABSTRACT FROM AUTHOR]
ISSN:09258388
DOI:10.1016/j.jallcom.2022.164660