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<p>This study used a preparation process involving chemical etching and subsequent anodization and supplemented with myristic acid modification, to successfully fabricate a superhydrophobic anti-icing coating on the surface of 5083 aluminum alloy. Superhydrophobic coatings with the same contact angle but varying roughness levels were then prepared on the surface of 5083 aluminum alloy to investigate the influence of roughness on the anti-icing and anti-corrosion properties of the coatings. Results indicated that the water contact angles of the superhydrophobic coatings with roughness of 1.60, 2.09, and 2.63&#xa0;μm were all greater than 158°, all composite coatings reaching a superhydrophobic state and demonstrating good long-term corrosion resistance. When composite coating has lower surface roughness and good density, the coating shows better corrosion resistance. The |<i>Z</i>|<sub>f</sub>&#xa0;=&#xa0;<sub>0.01&#xa0;Hz</sub> value of the superhydrophobic coatings remained 10<sup>8</sup>&#xa0;Ω&#xa0;cm<sup>2</sup> higher than the bare aluminum alloy. Furthermore, appropriate roughness provides a suitable contact area for the ice-coating interface. Among these coatings, the one with a roughness of 2.09&#xa0;μm exhibited the optimal anti-icing performance.</p>

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Influence of Superhydrophobic Surface Treatment on the Anti-Icing and Anti-Corrosion Effect of Anodized Aluminum Alloy

  • 期刊论文

  • 发表日期：

    2025年6月9日

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  • Chen Zhang,
  • Chen Chen,
  • Xianliang Li,
  • Yawei Shao,
  • Yanqiu Wang,
  • Junyi Wang

摘要

This study used a preparation process involving chemical etching and subsequent anodization and supplemented with myristic acid modification, to successfully fabricate a superhydrophobic anti-icing coating on the surface of 5083 aluminum alloy. Superhydrophobic coatings with the same contact angle but varying roughness levels were then prepared on the surface of 5083 aluminum alloy to investigate the influence of roughness on the anti-icing and anti-corrosion properties of the coatings. Results indicated that the water contact angles of the superhydrophobic coatings with roughness of 1.60, 2.09, and 2.63 μm were all greater than 158°, all composite coatings reaching a superhydrophobic state and demonstrating good long-term corrosion resistance. When composite coating has lower surface roughness and good density, the coating shows better corrosion resistance. The |Z|f = 0.01 Hz value of the superhydrophobic coatings remained 108 Ω cm2 higher than the bare aluminum alloy. Furthermore, appropriate roughness provides a suitable contact area for the ice-coating interface. Among these coatings, the one with a roughness of 2.09 μm exhibited the optimal anti-icing performance.