Abstract
A superhydrophobic surface with low adhesion and good wear resistance was fabricated on Ti6Al4V substrates via TiO2/Ni composite electrodeposition, and subsequently modified with a fluoroalkylsilane (FAS) film. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and optical contact angle measurements were used to characterize the surface morphologies, chemical compositions, and surface wettability. The superhydrophobicity of the as-prepared surface results from the fabrication of a hierarchical structure and the assembly of low-surface energy fluorinated components. The as-prepared surface had a water contact angle as high as 162.6° and a sliding angle close to 1.8°. Scratch and abrasion tests showed that the superhydrophobic coating provided a superior wear resistance and stable mechanical abrasion protection. In addition, the influence of processing conditions, such as working voltage, deposited time, pH value, and TiO2 concentration, was also investigated.
Highlights
A titanium alloy is one of the most attractive engineering materials for aerospace, aircraft, and biomedical applications, because of its high specific strength, good corrosion resistance, and excellent heat resistance [1,2]
Superhydrophobic surfaces have been proved to be effective in improving the corrosion resistance of titanium alloys, their low hardness, poor wear resistance, and high friction coefficient prevent them from being extensively employed in engineering applications [6,7]
The as-prepared Ti6Al4V surface has a better superhydrophobicity with a water contact angle of 162.6◦
Summary
A titanium alloy is one of the most attractive engineering materials for aerospace, aircraft, and biomedical applications, because of its high specific strength, good corrosion resistance, and excellent heat resistance [1,2]. Guo et al developed a thermal oxidation and immersion method to fabricate a superhydrophobic film with a good chemical stability [8]. Gao et al presented an anodic oxidation method to obtain superhydrophobic titanium alloy surfaces with a low roughness and good abrasion resistance [10]. Chemical deposition is an effective approach for fabricating superhydrophobic coatings on titanium alloys. To the best of our knowledge, there are few reports about the preparation of superhydrophobic surfaces on titanium alloys using electrodeposition He et al presented an effective and economic approach for the fabrication of SHP Zn/ZnO coating on a titanium substrate by utilizing electrodeposition and anneal treatment, the deposited samples were placed in a watch glass with filter paper and annealed at 200 ◦C [17]. The surface morphology, chemical compositions, surface wettability, water repellence, and wear resistance of the as-prepared films on Ti6Al4V substrates were characterized by a scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), water contact angle measurements, and a dry wear tester
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
