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AC Iron Loss Prediction and Magnetic Properties of Fe-6.5 wt. % Si Ribbons Prepared by Melt-Spinning

State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
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Metals 2018, 8(4), 259; https://doi.org/10.3390/met8040259
Received: 8 March 2018 / Revised: 29 March 2018 / Accepted: 10 April 2018 / Published: 11 April 2018
Ultra-thin Fe-6.5 wt. % Si ribbons of 35 μm in thickness were prepared by melt-spinning. The magnetic properties were investigated before and after annealing at 1000 °C. The DC properties and low-frequency (400 Hz~10 kHz) iron losses significantly improved after heat treatment. A simplified formula— P t = k t B m N —based on the Steinmetz law, which can be used to predict the AC iron loss, is presented. The symbols “kt” and “N” are defined as functions of microstructure and frequency. According to the tested results of iron loss, the values of “kt” and “N” can be fitted and therefore the simplified formula can be determined. The extent of AC iron losses can be predicted according to the formula. The results obtained from the formula predict AC iron loss to a good degree. The method developed in this work could be extended to other magnetic materials for predicting AC iron loss with greater ease. View Full-Text
Keywords: Fe-6.5 wt. % Si; ribbon; melt-spinning; AC iron loss prediction; magnetic properties Fe-6.5 wt. % Si; ribbon; melt-spinning; AC iron loss prediction; magnetic properties
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Wang, S.; Liang, Y.; Chen, B.; Ye, F.; Lin, J. AC Iron Loss Prediction and Magnetic Properties of Fe-6.5 wt. % Si Ribbons Prepared by Melt-Spinning. Metals 2018, 8, 259.

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