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Proceedings Paper

Study on magnetic properties of oriented silicon steel scribed by ultrafast laser
Author(s): Zongwang Chen; Laixin Wu; Jian Zhang; Zhuoyuan Li; Lin Yang; Wenwen Liu
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Paper Abstract

This paper aims at reducing iron loss of oriented silicon steel and improving its electromagnetic properties. The laser ablation was carried out with different scribe spacing by 532nm picosecond laser. The characteristics of ablation morphology and ablation mechanism were analyzed and discussed using 3D confocal microscope, SEM and EDS. Key magnetic parameters of oriented silicon steel such as relative permeability, dynamic hysteresis loop, and iron loss were measured using iron loss meter. The results show a regular and defect-free ablation morphology obtained by 532nm ultrafast laser, which has the characteristics of force effect damage. The performance improvement effect of silicon steel with the scribe spacing 3.5mm has been shown to be the best. The P1.5/50 and P1.7/50 decreased by 11.5% and 13.8% respectively, the peak of relative permeability increased by 13.6%, and the coercivity and loop area decreased by 12.3% and 11.9% respectively. The improvement of magnetic properties of silicon steel mainly depends on the domain structure and residual stress distribution.

Paper Details

Date Published: 8 July 2019
PDF: 9 pages
Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 110631D (8 July 2019); doi: 10.1117/12.2540019
Show Author Affiliations
Zongwang Chen, WenZhou Univ. (China)
Laixin Wu, Winsight Technologies Co. Ltd (China)
Jian Zhang, Wenzhou Univ. (China)
Wenzhou Institute of Technology Testing & Calibration (China)
Zhuoyuan Li, Wenzhou Univ. (China)
Lin Yang, Wenzhou Univ. (China)
Wenwen Liu, Wenzhou Univ. (China)

Published in SPIE Proceedings Vol. 11063:
Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers
Jianda Shao; Takahisa Jitsuno; Wolfgang Rudolph, Editor(s)

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