Superhydrophobic Al Surfaces with Properties of Anticorrosion and Reparability.

ABSTRACT: Aluminum (Al) is one of the most widely used metals for industry and household applications, but its longevity is limited by its tendency for corrosion. In this work, we report a facile method to fabricate superhydrophobic Al surfaces that have excellent anti-corrosion effect. The surface is obtained by etching Al in CuCl₂ solution to form the micro-nano-pit surface texture followed by lowering its surface energy in an aqueous ethanol solution of stearic acid. The superhydrophobic Al surfaces show water contact angles as high as 165°. Electrochemical tests demonstrate that the corrosion rate of the Al surface drops by 94.5% after the superhydrophobic modification (corrosion current density lowers from 1.11 × 10^-4 to 6.10 × 10^-6 A cm^-2). We also s

SUBMITTER: Zhan Z 

PROVIDER: S-EPMC6312631 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature