Abstract
Surfaces with mimic micro-convex domes offer superior functions such as superhydrophobicity, self-cleaning, anti-wear and drag reduction. In this paper, magnetic-filed-assisted laser surface texturing (LST) using long pulse laser was employed to create micro-convex domes on 304L stainless steel. Spherical cap shaped domes with ripples around the bottom were fabricated through LST. The effects of laser power and magnetic flux density on surface morphologies of the created convex domes were investigated. It was found that the height and diameter of the created convex dome increased with the increment of the laser power without magnetic field. Moreover, the height of the created convex dome grew up gradually with the increase of magnetic flux density due to the induced Lorentz force. The height of the convex dome was increased by as much as 14.5% as compared to LST without the applied magnetic field at a laser power of 54 W. However, the applied magnetic field had no evident effect on the diameter of the created convex dome.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (Grant No. 51705258), Natural Science Foundation of Jiangsu Province (BK20150685), the Fundamental Research Funds for the Central Universities (KYZ201659), Foundation for Distinguished Young Talents, College of Engineering, Nan**g Agricultural University (YQ201604), and Young Teachers Fund of Nan**g Agricultural University (rcqd16-05).
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Wang, X., Xu, W., Liu, L. et al. Magnetic-field-assisted fabrication of micro-convex domes using long pulse laser. Appl. Phys. A 123, 592 (2017). https://doi.org/10.1007/s00339-017-1198-5
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DOI: https://doi.org/10.1007/s00339-017-1198-5