The invention discloses a method for constructing a superhydrophobic aluminum surface with high stability. The method comprises the steps of ultrasonically cleaning an aluminum sheet by sequentially using
acetone and
ethanol under the condition of
room temperature, then, flushing with deionized water, next, carrying out alkali
corrosion on the aluminum sheet in a
sodium hydroxide solution, flushing with deionized water, and finally, carrying out
acid corrosion on the aluminum sheet in a
nitric acid solution; electrolyzing in a
phosphoric acid solution by taking the pretreated aluminum sheet as an
anode and a
lead plate as a
cathode, and keeping the
electrolyte at constant temperature to generate an aluminum
oxide film on the surface of the
electrolyte; immersing the treated aluminum sheet into an
ammonia water solution to corrode the aluminum sheet by using
ammonia water; and immersing the treated aluminum sheet into an n-
hexane mixed solution composed of
stearic acid and dicyclohexylcarbodiimide, soaking for 10-30 hours, taking out the product, and flushing the product with n-
hexane to obtain a superhydrophobic aluminum sheet. After superhydrophobic
metal aluminum obtained by using the method disclosed by the invention is placed for 4 months, the
contact angle of the superhydrophobic
metal aluminum is not changed, and the
rolling angle of the superhydrophobic
metal aluminum is smaller than 5 degrees; in addition, the superhydrophobic metal aluminum not only has favorable superhydrophobicity and self-cleaning function, but also has very strong
corrosion resistance.