화학공학소재연구정보센터
Applied Surface Science, Vol.299, 41-46, 2014
Facile approach in the development of icephobic hierarchically textured coatings as corrosion barrier
An anti-corrosion superhydrophobic film with water contact angle greater than 160. on aluminum alloy 6061 substrate was fabricated simply through the spin-coating method applied to Al2O3 nanoparticles doped in silicone rubber solution. The as-obtained sample was characterized by scanning electron microscopy (SEM) and water contact angle/surface energy measurement. The corrosion behaviour of such coating in the NaCl solutions was investigated using the potentiodynamic polarization. The results show that the corrosion resistance of the developed superhydrophobic surface is improved greatly due to the composite wetting states or interfaces with numerous air pockets between its surface and the NaCl solution. This superhydrophobic coating could serve as an effective barrier against aggressive medium. Ice adhesion strength of the as-prepared superhydrophobic coating was also evaluated by measuring its ice adhesion force which was found to have reduced by 4.8 times compared to that of aluminum substrate as reference test. (C) 2014 Elsevier B.V. All rights reserved.