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<p>As a widely used key material, the surface of aluminum alloy is prone to icing and corrosion under low temperature and high humidity environment, which will significantly shorten the service life of the material.In response to this problem, the preparation of superhydrophobic surfaces on aluminum alloy materials is an effective solution.In this paper, Nano-Al<sub>2</sub>O<sub>3</sub> was hydrophobically modified by tetradecanoic acid, and then superhydrophobic surface was prepared on aluminum alloy substrate by spraying method.Compared with the aluminum alloy substrate, the prepared superhydrophobic surface has excellent anti-wettability, with a water contact angle of 158.2 ± 2.0 ° and a rolling angle of 2 ± 0.4 °.Droplet impact experiments show that the contact time of deionized water droplets with a diameter of 2.2&#xa0;mm on the superhydrophobic surface is only 9.86 ms.The anti-icing experiment shows that the prepared superhydrophobic surface has strong anti-icing ability, and the icing time is 7.49 times longer than that of the aluminum alloy substrate.Compared with the aluminum alloy substrate, the corrosion current density of the Al<sub>2</sub>O<sub>3</sub> superhydrophobic surface decreased by two orders of magnitude, the charge transfer resistance (Rct) increased by one order of magnitude, and the corrosion inhibition efficiency reached 97.55%.Electrochemical experiments show that the prepared superhydrophobic surface has good corrosion resistance.In this paper, the superhydrophobic surface with anti-icing and anti-corrosion functions was successfully prepared on the aluminum alloy substrate by tetradecanoic acid modified nano-alumina particles, which provided a new idea for improving the anti-icing and anti-corrosion ability of the aluminum alloy substrate.</p>

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Nano-Al2O3 superhydrophobic surface with anti-icing and corrosion resistance

  • 期刊论文

  • 发表日期：

    2025年10月8日

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  • Xiaoru Hao,
  • Shilin Dong,
  • Yulong Yang,
  • Haikun Zheng,
  • Ruirui Wang

摘要

As a widely used key material, the surface of aluminum alloy is prone to icing and corrosion under low temperature and high humidity environment, which will significantly shorten the service life of the material.In response to this problem, the preparation of superhydrophobic surfaces on aluminum alloy materials is an effective solution.In this paper, Nano-Al2O3 was hydrophobically modified by tetradecanoic acid, and then superhydrophobic surface was prepared on aluminum alloy substrate by spraying method.Compared with the aluminum alloy substrate, the prepared superhydrophobic surface has excellent anti-wettability, with a water contact angle of 158.2 ± 2.0 ° and a rolling angle of 2 ± 0.4 °.Droplet impact experiments show that the contact time of deionized water droplets with a diameter of 2.2 mm on the superhydrophobic surface is only 9.86 ms.The anti-icing experiment shows that the prepared superhydrophobic surface has strong anti-icing ability, and the icing time is 7.49 times longer than that of the aluminum alloy substrate.Compared with the aluminum alloy substrate, the corrosion current density of the Al2O3 superhydrophobic surface decreased by two orders of magnitude, the charge transfer resistance (Rct) increased by one order of magnitude, and the corrosion inhibition efficiency reached 97.55%.Electrochemical experiments show that the prepared superhydrophobic surface has good corrosion resistance.In this paper, the superhydrophobic surface with anti-icing and anti-corrosion functions was successfully prepared on the aluminum alloy substrate by tetradecanoic acid modified nano-alumina particles, which provided a new idea for improving the anti-icing and anti-corrosion ability of the aluminum alloy substrate.