Preparation of superhydrophobic titanium surfaces via electrochemical etching and fluorosilane modification

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Indexed by:期刊论文

Date of Publication:2012-12-15

Journal:APPLIED SURFACE SCIENCE

Included Journals:SCIE、Scopus

Volume:263

Page Number:297-301

ISSN No.:0169-4332

Key Words:Superhydrophobic surfaces; Electrochemical; Microstructure; Robust; Environment-friendly

Abstract:The preparation of superhydrophobic surfaces on hydrophilic metal substrates depends on both surface microstructures and low surface energy modification. In this study, a simple and inexpensive electrochemical method for preparing robust superhydrophobic titanium surfaces is reported. The neutral sodium chloride solution is used as electrolyte. Fluoroalkylsilane (FAS) was used to reduce the surface energy of the electrochemically etched surface. Scanning electron microscopy (SEM) images, energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR) spectra, and contact angle measurement are performed to characterize the morphological features, chemical composition, and wett-ability of the titanium surfaces. Stability and friction tests indicate that the prepared titanium surfaces are robust. The analysis of electrolyte, reaction process, and products demonstrates that the electrochemical processing is very inexpensive and environment-friendly. This method is believed to be easily adaptable for use in large-scale industry productions to promote the application of superhydrophobic titanium surfaces in aviation, aerospace, shipbuilding, and the military industry. (C) 2012 Elsevier B. V. All rights reserved.

Date of Publication:2012-12-15