Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 7, Issue 3, Pages 1859-1867Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am507586u
Keywords
one-step; superhydrophobic; magnesium; electrodeposition; hierarchical structure; corrosion
Funding
- National Natural Science Foundation of China [51075151]
- Guangdong Natural Science Foundation [10251064101000001]
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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 degrees and a sliding angle of less than 2 degrees. 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.
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