Correlation between laser energetic parameters and magnetic properties of GO laminations under surface treatments with long, short or ultra-short pulsed lasers

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:504

Article

Nesser, M.¹  Maloberti, O.^1,2  Dupuy, J.³  Salloum, E.¹  Panier, S.¹  Fortin, J.¹  Dassonvalle, P.^2,4 

[1] LTI Lab, Ave Fac Le Bailly, FR-80025 Amiens, France

[2] ESIEE Amiens, 14 Quai Somme, FR-80082 Amiens, France

[3] Multitel Asbl, Parc Initialis, BE-7000 Mons, Belgium

[4] UPJV, MIS Lab, 14 Quai Somme, FR-80082 Amiens, France

关键词: GO laminations;    Laser treatment;    Magnetic properties;    Induced thermal stress;    Heat affected zone;    Groove depth;   

DOI  :  10.1016/j.jmmm.2020.166696

来源: Elsevier

【 摘 要 】

Electromagnetic components mostly incorporate soft magnetic materials used as flux multipliers. Hence, any reduction in iron loss of the magnetic core yields in saving energy. Among the techniques, the local laser treatment is a non-contact method applied for 180 degrees domain refinement (Patri et al. [1]). The present study reassessed the impact of laser treatment on the magnetic properties of grain oriented silicon steels. Various laser pulse widths are used: an ultra-short pulse laser mainly adapted to the ablation process and a long and short pulse durations used for both irradiation and scribing processes [2]. The power loss is measured with a Single Sheet Tester (150 x 150 mm(2)). Each type of treatment resulted in a power loss reduction of 15-35% at peak induction 1.5 T and frequency 50 Hz. However, only the scribing and the ablation improved also the apparent permeability. In this work, the laser energy parameters are used to estimate the laser impact on the heat affected zone, the groove depth, the induced thermal stress, and on the internal properties of a magnetic behavioral model: static permeability and dynamic magnetization property [3].

【 授权许可】

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