Title: Investigation on salt corrosion resistance of bioinspired robust slippery and superhydrophobic surface of Al-Mg alloy

Authors: Zhihui Xing; Jinghan Liu; Zheng Tan; Na Wang; Lei Fan; Li Zhang

Addresses: School of Mechanical Engineering, Shenyang Urban Construction University, Liaoning Shenyang 110167, China ' School of Control Engineering, Northeastern University at Qinhuangdao, Hebei Qinhuangdao 066004, China ' School of Control Engineering, Northeastern University at Qinhuangdao, Hebei Qinhuangdao 066004, China ' School of Mechanical Engineering, Shenyang Urban Construction University, Liaoning Shenyang 110167, China ' School of Mechanical Engineering, Shenyang Urban Construction University, Liaoning Shenyang 110167, China ' School of Control Engineering, Northeastern University at Qinhuangdao, Hebei Qinhuangdao 066004, China

Abstract: Aluminium-magnesium alloys are widely used in the fields of automobiles, architecture, healthcare, and electronics. The surface facial mask can effectively inhibit the direct contact between the metal substrate and the corrosive medium, thus reducing the corrosion rate and preventing corrosion. Based on biomimetic principles, this study used a hybrid method of laser texturing and surface spraying to prepare a superhydrophobic surface with a micro grid 'container' structure, in which FAS/SiO₂ nanoparticles were embedded and injected with silicone oil. Verify through wear tests that the surface has good wear resistance. We also studied the effects of scanning frequency, scanning spacing, and scanning speed on wettability. Pure Al-Mg alloy, superhydrophobic surface, pure slippery surface, and slippery and superhydrophobic surface samples were subjected to action potential polarisation experiments (PDP) and electrochemical impedance spectroscopy tests (EIS) in a 3.5 wt. % NaCl solution to compare their corrosion resistance and analyse their corrosion resistance mechanism.

Keywords: slippery and superhydrophobic surface; hybrid method of laser texturing; robustness; salt corrosion resistance; Al-Mg alloy.

DOI: 10.1504/IJSURFSE.2025.147558

International Journal of Surface Science and Engineering, 2025 Vol.19 No.2, pp.125 - 144

Received: 18 Apr 2024
Accepted: 17 Jul 2024
Published online: 21 Jul 2025 *

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