Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 502, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2020.166553
Keywords
Fe-6.5Si alloy; Soft magnetic composites; Doping Co; Core loss; Permeability
Funding
- GDAS' Special Project for National Capacity Improvement of Sci-tech Innovation Platform Innovative Capacity [2020GDSYL-20200402008]
- Science and Technology Planning Project of Guangdong Province of China [2015B010136004]
- Key Technology Project of Foshan [1920001001392]
- GDAS' Project of Science and Technology Development [2018GDASCX-0117]
- National Natural Science Foundation of China [51674181]
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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 Fe6.5Si 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/cm(3) and effective permeability of 103.36.
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