Title of Paper:Feasible fabrication of a wear-resistant hydrophobic surface

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Affiliation of Author(s):机电学院

Journal:APPLIED SURFACE SCIENCE

Key Words:Hydrophobic surface Wear resistant Laser ablation Mechanical stability Cemented carbide Self-healing surface

Abstract:In this study, a novel facile method, namely liquid-phase laser ablation, was proposed to obtain a robust hydrophobic surface. The cemented carbide sample was immersed in a fluorosilane solution and ablated by laser, while controlling the distance between the top surface of sample and liquid level. Then, a surface with good hydrophobicity could be obtained by one step using this technique. The effect of different laser processing parameters on the wettability of the sample surface was studied, and the water contact-angle (WCA) and the rolling angle (RA) could reach 148.4 degrees +/- 0.6 degrees, 4.5 degrees +/- 0.5 degrees, respectively, which indicated excellent hydrophobicity. Moreover, we found that the hydrophobic surface fabricated by the new method was more wearresistant than that obtained by the laser texture and fluorination treatment. The hydrophobic surface exhibited excellent mechanical abrasion resistance as it maintained hydrophobicity even after being subjected to mechanical abrasion by hand-polishing 600 times with 1200 grit metallographic sandpaper. Moreover, the mechanism of wear-resistant was analyzed, which was attributed to the formation of the self-healing hydrophobic coatings with a certain thickness on the microstructures. This facile and low-cost method can not only be easily extended to other materials but also produce hydrophobic surfaces with robustness and self-healing properties.

ISSN No.:0169-4332

Translation or Not:no

Date of Publication:2019-01-01

Co-author:Xiao, Sinong,Yang Yinfei,Li Liang,Jenny,hn,Li, Hanlong

Correspondence Author:Hao Xiuqing