International.
Researchers at The South China University of Technology developed a simple one-step method to build a corrosion-resistant bionic superhydrophobic surface by a thermal resolution process in a solution of ethanol and water containing stearic acid.
In this study, a superhydrophobic surface with biomimetic micronanostructures was prepared. Mammillaria herrerae-like microspheres, carnation-like microclusters, and biomimetic micronanostructure carnation petal nanoslices on magnesium alloy surface can create a stable superhydrophobic surface, similar to the "lotus leaf" structure.
The prepared superhydrophobic surface had a contact angle of 158.5◦ and a sliding angle of 2.0◦. It was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier transformed infrared spectroscopy (FTIR), X-ray diffraction (XRD), and contact angle measurement.
Potentiodynamic polarization measurements demonstrated that the superhydrophobic surface greatly improved the corrosion properties of the magnesium alloy in a 3.5% by weight NaCl solution.
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