Study on magnetic properties of oriented silicon steel scribed by ultrafast  laser

Zongwang Chen; Laixin Wu; Jian Zhang; Zhuoyuan Li; Lin Yang; Wenwen Liu

doi:10.1117/12.2540019

8 July 2019 Study on magnetic properties of oriented silicon steel scribed by ultrafast laser

Zongwang Chen, Laixin Wu, Jian Zhang, Zhuoyuan Li, Lin Yang, Wenwen Liu

Proceedings Volume 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers; 110631D (2019) https://doi.org/10.1117/12.2540019
Event: Pacific Rim Laser Damage 2019 and Thin Film Physics and Applications 2019, 2019, Qingdao, China

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 P_1.5/50 and P_1.7/50 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.

Citation Download Citation

Zongwang Chen, Laixin Wu, Jian Zhang, Zhuoyuan Li, Lin Yang, and Wenwen Liu "Study on magnetic properties of oriented silicon steel scribed by ultrafast laser", Proc. SPIE 11063, Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers, 110631D (8 July 2019); https://doi.org/10.1117/12.2540019

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