Abstract
In this paper, a superhydrophobic surface was prepared on the surface of Ti–6Al–4V (TC4) alloy prepared by selective laser melting (SLM), and the water contact angle (WCA) was 156.8°. The laser surface texturing (LST) and chemical modification treatments were combined with a micro-arc oxidation (MAO) treatment to improve the mechanical durability of the superhydrophobic surface. The surface morphology, wettability, wear resistance, and abrasion resistance of the composite coatings were analyzed, and the mechanism of abrasion resistance on superhydrophobic surfaces was discussed. The superhydrophobic surface that was prepared withstood abrasion under 600 # sandpaper at a pressure of 2.9 kPa and a movement distance of 1020 cm. In addition, the prepared superhydrophobic surface showed better wear resistance and friction reduction in friction experiment, exhibiting more stable coefficient of friction (COF) curve, lower COF value, and narrower abrasion marks. The results show that the prepared composite coatings not only exhibit superhydrophobicity, but also good mechanical stability, which effectively improves the mechanical property of superhydrophobic sample and significantly prolongs its service life in harsh environments. This study provided a new idea and preparation method for the preparation of mechanically stabilized superhydrophobic surface.
Published Version
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