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Evaluation of microstructure and magnetic performance of Fe- 6.5 wt% Si soft magnetic powder core | IEEE Conference Publication | IEEE Xplore

Evaluation of microstructure and magnetic performance of Fe- 6.5 wt% Si soft magnetic powder core


Abstract:

This paper reports microstructure and magnetic performance of Fe-6.5wt% Si (Fe-Si) soft magnetic powder cores. Fe-Si powder core showed the extremely high saturation magn...Show More

Abstract:

This paper reports microstructure and magnetic performance of Fe-6.5wt% Si (Fe-Si) soft magnetic powder cores. Fe-Si powder core showed the extremely high saturation magnetization in the range from 186.1 to 192.2 emu/g depending on the annealing temperature. The permeability of the powder core at the frequency of 20 kHz gradually increased from 33.9 to 46.1 as the annealed temperature of the core was increased from 400 to 800 °C. The total core loss at the maximum magnetic flux density of 100 mT shows the increased tendency as function of frequencies in all annealed cores. In particular, the high saturation magnetization of 192.0 emu/g and lowest total core loss 267 kJ/m3 measured at 20 kHz and 100 mT were obtained for the annealed powder core at 800 °C, suggesting that it is one of the promising candidates for high frequency power electronic devices.
Date of Conference: 15-19 May 2023
Date Added to IEEE Xplore: 04 September 2023
ISBN Information:
Conference Location: Sendai, Japan

Funding Agency:

References is not available for this document.

I. Introduction

SOFT magnetic powder cores are commonly used in the fields of transformer, generators, and electric machine due to their soft magnetic properties and low total loss [1], [2], [3]. Fe-6.5 wt% Si alloy has been known as a promising candidate for low-to-medium frequency applications because of good saturation magnetization, high electrical resistivity, and near-zero magnetostriction, therefore enhancement of soft magnetic properties and lowering of core loss [1], [4]. As reported by JFE steel [5], the Fe-6.5 wt% Si has become a candidate for application in high-frequency up to 15 kHz.

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1.
G. Ouyang, X. Chen, Y. Liang, C. Macziewski and J. Cui, "On Review of Fe-6.5wt%Si high silicon steel-Apromising soft magnetic materia for sub-kHz application", J. Magn. Magn. Mater., vol. 481, pp. 234-250, 2019.
2.
B.S. Ram, A.K. Paul and S.V. Kulkarni, "Soft magnetic materials and their applications in transformers", J. Magn. Magn. Mater., vol. 537, pp. 168210.
3.
T. Ishimine, A. Watanabe, T. Ueno, T. Maeda and T. Tokuoka, "Development of low-iron-loss powder magnetic core material for high-frequency applications", SEI Technical Review, no. 72, pp. 117-123, 2011.
4.
R.K. Roy, M. Ghosh, A.K. Panda, R.N. Ghosh and A. Mitra, "Development of rapidly solidified 6.5 wt% silicon steel for magnetic application", Trans. Indian Inst. Met., vol. 53, pp. 745-750, 2010.
5.
B.G. You, J.S. Kim, B.K. Lee, G.B. Choi and D.W. Yoo, "Optimization of powder core inductors of buck-boost converster for hybrid Electrical vehicles", 2009 IEEE Vehicle Power and Propulsion Conference, pp. 730-735, 2009.
6.
X.F. Bi, T. Tanaka and K. Sato, "Effect of microstructure on the magnetic properties of 6.5%Si-Fe alloy", J. Magn. Magn. Mater., vol. 112, pp. 189-191, 1992.

References

References is not available for this document.