Abstract
The development of techniques to fabricate superhydrophobic aluminum surfaces is rapidly maturing, yet the problems of high loss of material and complex preparation still persist. To address this, a simple method that combines droplet etching and chemical modification was used to fabricate a superhydrophobic aluminum surface, with a contact angle of 156° and a sliding angle of 5°. Compared with the traditional immersion method, droplet etching can properly preserve the integrity of the aluminum material and also provide a rough structure on the aluminum surface. The optimal superhydrophobicity of the aluminum surface was obtained by one-step immersion in pentadecafluorooctanoic acid aqueous solution at 80 ℃. Thermostability, anticorrosion, self-cleaning, and antifouling tests were subsequently performed. The results demonstrated that the superhydrophobic aluminum surface was easily prepared and possessed thermostability, anticorrosion, self-cleaning and antifouling abilities.
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