title: One-step electrodeposition process to fabricate corrosion-resistant superhydrophobic surface on magnesium alloy.
abstract: A simple, one-step method has been developed to construct a superhydrophobic surface by electrodepositing Mg-Mn-Ce magnesium plate in an ethanol solution containing cerium nitrate hexahydrate and myristic acid. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy were employed to characterize the surfaces. The shortest electrodeposition time to obtain a superhydrophobic surface was about 1 min, and the as-prepared superhydrophobic surfaces had a maximum contact angle of 159.8° and a sliding angle of less than 2°. Potentiodynamic polarization and electrochemical impedance spectroscopy measurements demonstrated that the superhydrophobic surface greatly improved the corrosion properties of magnesium alloy in 3.5 wt % aqueous solutions of NaCl, Na2SO4, NaClO3, and NaNO3. Besides, the chemical stability and mechanical durability of the as-prepared superhydrophobic surface were also examined. The presented method is rapid, low-cost, and environmentally friendly and thus should be of significant value for the industrial fabrication of anticorrosive superhydrophobic surfaces and should have a promising future in expanding the applications of magnesium alloys.
authors.affiliation: School of Mechanical and Automotive Engineering, South China University of Technology , Guangzhou 510640, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Liu
authors.forename: Dexin
authors.initials: D
authors.lastname: Chen
authors.forename: Zhixin
authors.initials: Z
authors.lastname: Kang
keywords: corrosion; electrodeposition; hierarchical structure; magnesium; one-step; superhydrophobic