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Start Over Author "Mao, Xinhua" Publisher elsevier bv
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9. Core loss reduction for Fe-6.5wt%Si soft magnetic composites doped with Co element

Author

Fan Luo, Mao Xinhua, Jian Wang, Lei Chao, Xin Liu, Xi'an Fan, Zigui Luo, and Danhua Liu

Subjects
010302 applied physics, Materials science, Alloy, Doping, 02 engineering and technology, engineering.material, Coercivity, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, Electronic, Optical and Magnetic Materials, law.invention, law, Permeability (electromagnetism), Electrical resistivity and conductivity, Powder metallurgy, 0103 physical sciences, Eddy current, engineering, Composite material, 0210 nano-technology, Relative permeability
Abstract

Co element was doped in Fe-6.5Si alloy and the corresponding soft magnetic composites were fabricated successfully by conventional powder metallurgy techniques in this work. Saturation magnetization of Co-doped Fe-6.5Si powder increases compared to powders without Co and the coercivity increases because of grain refinement. Co addition is helpful to improve the electrical resistivity of Fe-6.5Si alloy. After doping Co, it shows a significant trend towards a decrease for core loss of Fe-6.5Si SMCs by reducing both eddy current loss and hysteresis loss. The effective permeability of Co-doped Fe-6.5Si SMCs decreases monotony with the Co content changing from 0 to 7.0 wt%. Fe-6.5Si-1.0Co SMCs shows best magnetic performances (100 mT/50 KHz) with core loss of 781.03 mW/cm3 and effective permeability of 103.36.

Published
2020

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