Facile fabrication of wear-resistant multifunctional surfaces on titanium alloy substrate by one-step anodization and modification with silicon dioxide nanoparticles

Abstract

This paper describes a simple, facile, low-cost method of fabricating a wear-resistant surface on titanium alloy substrates by single-step anodization and modification with silicon dioxide particles. The method produced a TiO 2 -SiO 2 composite surface with micro-to nanohierarchical structure, which became multifunctional after fluoroalkylsilane modification. The surface not only showed excellent superhydrophobicity [contact angles (CAs) [ 150°, sliding angles (SAs) B 8°] but also exhibited better repellency of complex whole blood (CAs = 153°± 2°, SAs = 9°). Furthermore, the wear resistance of the surface was investigated by sandpaper abrasion test. The results showed that the mechanical wear resistance of the TiO 2 -SiO 2 composite surface was more than three times that of the surface prepared only by the electrochemical technique, and the surface still maintained the capacity of hydrophobicity even after 33.6 m of wear under conditions of 3400 Pa and 360# sandpaper. The method mentioned in this paper could be a candidate for the production of abrasion-resistant and super-repellent titanium alloy. Graphical Abstract

Preparation and Tribological Properties of a Superhydrophobic TB6 Titanium Alloy

“…Consequently, long-term water contact with various components of the air vehicle leads to corrosion 12 . Therefore, many surface techniques have been developed in recent years to prepare superhydrophobic wear-resistant titanium alloy surfaces [13][14][15] . Ma et al 16 prepared Cr coating with micro-nano porous structure on TC4 titanium alloy substrate using plasma reverse sputtering process, which significantly improved the surface wear resistance, hydrophobicity, and adhesion.…”

Fabrication of bioinspired, self-cleaning, anti-icing, superliquiphilic/phobic titanium using different pathways

“…The preparation methods used to make a titanium surface superhydrophobic include laser texturing [9], thermal oxidation [10], sandblasting [11], chemical etching [12,13] and anodizing [14] along with fluorination on top. The preparation methods used to make the titanium surface superliquiphobic include anodizing [15,16], two-step anodizing [17], anodizing and nanoparticle-binder coating [18], and chemical etching and anodizing [19] along with a fluorinated coating on top. Two of the most commonly used to introduce roughness are chemical etching and anodizing.…”