Corrosion behavior of superhydrophobic aluminum alloy in concentrated potassium halide solutions: When the specific anion effect is manifested

Pulsed Laser Induced Triple Layer Copper Oxide Structure for Durable Polyfunctionality of Superhydrophobic Coatings

“…. At the same time, as discussed in our recent studies, the prolonged contact of a superhydrophobic coating with corrosive solutions may be accompanied by some degradation, associated with weak hydrolysis of SiOCu bonds in brine solutions and minor desorption of hydrophobic molecules. In general, such desorption results in degradation of the water repelling properties, the shift of surface charge toward more positive values and increase in the availability of surface sites for anion adsorption, thus leading to degradation of corrosion protection.…”

“…The additional heat treatment at T = 375 °C in an oven for 1–3 h was used to increase the fraction of surface cupric oxide with respect to cuprous oxide. To obtain a superhydrophobic state of the laser treated surface, the surface energy of the samples was reduced by chemisorption of fluorooxysilane onto the surface hydroxyl groups serving as chemisorption centers . Exposure of the samples in the sealed vessel with saturated vapors of methoxy‐{3‐[(2,2,3,3,4,4,5,5,6,6,7,7,8,8,8‐pentadecafluorooctyl)oxy]‐propyl}‐silane for 1 h at T = 95 °C, followed by drying for 1 h in an oven at 130 °C resulted in the formation of a crosslinked layer of hydrophobic agent atop the laser textured surface and in the encapsulation of excess fluorooxysilane in the porous structures, formed upon laser treatment.…”

“…Such complex oxide layer has been found to be useful in improving the corrosion resistance of copper in NaCl solutions, while the formation of a compact thick film of CuO on Cu surface prevents anodic corrosion . The superhydrophobic films on metal surfaces essentially inhibit the electrochemical corrosion processes due to several protection mechanisms, such as electrolyte repellency, suppression of adsorption of aggressive ions onto the surface, barrier effect of the modified textured surface layer, and specific charging of a hydrophobic surface in electrolytes . At the same time, for the majority of designed superhydrophobic coatings, a poor abrasive resistance restricts the practical application of these coatings.…”

Preparation of transparent nanocomposites from UV‐ and thermo‐curable epoxyacrylate and graphene oxide for the application of corrosion protection coatings

“…From the EIS measurement, generally, the larger the axial radius of the impedance arc shown in the Nyquist pattern is, the better are the corrosion protection properties for coatings. In addition, the impedance value at the lowest frequency ( f = 0.01 Hz) of the Bode plots has also been commonly used as a good indicator of a coating's shielding performance . The Nyquist and Bode plots of the EA/GO‐coated steel plates are presented in Fig.…”

Superhydrophobic Coatings from Recyclable Materials for Protection in a Real Sea Environment

“…For the future, additional information regarding the aging of the coating itself and the stability of the air plastron is needed. Indeed, both these components determine anticorrosion performances with complex mechanisms touching different connected variables, such as homogeneous/heterogeneous wetting degree of the interface; blockage of cathodic/anodic sites; and diffusion of crucial reactants such as Cl − , O 2 , and H + [32][33][34], whose dependence on time enhancing biological pressure can be expected.…”