Simultaneous mapping of nanoscale topography and surface potential for the study of localized corrosion in 2024-T3 aluminum alloy and corrosion resistance introduced by a superhydrophobic coating

Corrosion Behavior and Mechanical Properties of a Nanocomposite Superhydrophobic Coating

“…As the surface features remained intact, even after a prolonged exposure to accelerated corrosion for a duration of 60 min, the anticorrosion behavior of the developed superhydrophobic nanocomposite coating can be confirmed at higher resolution. The observations made on the superhydrophobic nanocomposite coating after the AFM corrosion test are similar to those from previously reported corrosion tests using AFM [23].…”

“…The corrosion resistance of the fabricated coating was confirmed by the topography measurements performed on a selected area of the coating. This was done successively by atomic force microscopy after simulating accelerated corrosion using a potentiostat [23]. The same test was performed on bare aluminum alloy substrates for comparison.…”

Reduction reactions at metal/non-aqueous interfaces can be sensed with the turn-on fluorophore resazurin

“…Higher resolution methods can be used to study the effects and products of redox reactions at the micro-and nanoscales. For example, the morphological effects and products of corrosion of steel and iron has been probed at these scales with the use of atomic force microscopy (AFM), 8,9 scanning electron microscopy (SEM), 10,11 X-ray photoelectron spectroscopy (XPS), 12 vertical scanning interferometry (VTI), and Raman spectroscopy. 13 AFM, SEM, XPS, and VTI can all provide nanoscale spatial resolution, but these methods require the specimen to be removed from the environment of the reaction, so dynamic temporal information is lost.…”