Fabrication of Superhydrophobic Surfaces on Aluminum Alloy by Simple Chemical Etching Method
A facial chemical etching method was developed for fabricating stable super-hydrophobic surfaces on aluminum alloy foils. The microstructure and wettability of super-hydrophobic surfaces were characterized by scanning electron microscopy, water contact angle (CA) measurement, and optical methods. The surfaces of the modified aluminum alloy substrates exhibit superhydrophobicity, with a CA of 164.8°±1.6° and a water sliding angle of about 5°. The etched surfaces have binary structure consisting of the irregular microscale plateaus and caves in which there are the nanoscale block-like convexes and hollows.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
Y. F. Luo et al., "Fabrication of Superhydrophobic Surfaces on Aluminum Alloy by Simple Chemical Etching Method", Advanced Materials Research, Vols. 239-242, pp. 2270-2273, 2011