Abstract
In this study, a more conveniently method was tried to prepare T-shaped groove structure surface with HS-WEDM method on the surface of an aluminum alloy, and the results shown that processed surface has super-hydrophobic and high- adhesion properties. The fabricated surface morphology was observed by scanning electron microscopy and laser confocal and it was found that there are some micrometers or submicron-scale pits and mastoids distributed on the surface of the sample with sub-millimeter T-shaped grooves. This phenomenon can be combined with typical wetting model to explain the reason why the surface of the sample is superhydrophobic. At the same time, by changing the volume, the maximum adhesion that the sample can provide 14 μl of water. Meanwhile, we present a generalized Cassie-Baxter equation to take into account the effect of drop pressure on the apparent contact angle, and determine the limiting pressure pw and the pull-off pressure pout at T-shaped groove structure based on the previous research.
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