Abstract Aluminum-based materials are widely used, but they are easily corroded and contaminated in some harsh conditions. Now, fabricating anti-wetting coatings on aluminum-base materials is a promising way to solve the above problems. In this work, a two-step method is developed to fabricate a hierarchical leaf-like superamphiphobic PTFE/CuO coating on 6061Al substrate, and it is simple, economical and environmentally friendly. The resultant coating is repellent to many liquids, such as tap water, ink, tea water, milk, H 2 SO 4 solution (pH 3), NaOH solution (pH 10), ethylene glycol and glycerol. All contact angles of these liquids on the PTFE/CuO coating are more than 150 ° , and water sliding angles are less than 10 ° . Importantly, the results of the self-cleaning, adhesion, chemical stability and corrosion resistance tests indicate that the PTFE/CuO coating could protect the 6061Al substrate from corrosion and pollution. Furthermore, after the UV, thermal stability and mechanical stability tests, the PTFE/CuO samples are still be superhydrophobic, which suggests that 6061Al substrate with the PTFE/CuO coating could be applied in harsh conditions. In sum, the method is especially suitable to large-scale industry production and promising for corrosion protection and functional applications of aluminum-based materials.

中文翻译：

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在 6061Al 上制备分层叶状超疏水 PTFE/CuO 涂层的两步法

摘要 铝基材料应用广泛，但在一些恶劣条件下容易腐蚀和污染。现在，在铝基材料上制备防润湿涂层是解决上述问题的一种很有前景的方法。在这项工作中，开发了一种两步法在 6061Al 基板上制备分层叶状超疏水性 PTFE/CuO 涂层，该方法简单、经济且环保。所得涂层对许多液体具有排斥性，例如自来水、墨水、茶水、牛奶、H 2 SO 4 溶液（pH 3）、NaOH溶液（pH 10）、乙二醇和甘油。这些液体在PTFE/CuO涂层上的所有接触角均大于150°，水滑角小于10°。重要的是，自清洁、粘附、化学稳定性和耐腐蚀性测试表明，PTFE/CuO 涂层可以保护 6061Al 基体免受腐蚀和污染。此外，经过紫外线、热稳定性和机械稳定性测试后，PTFE/CuO 样品仍具有超疏水性，这表明带有 PTFE/CuO 涂层的 6061Al 基材可以在恶劣条件下使用。综上所述，该方法特别适用于大规模工业化生产，在铝基材料的防腐和功能应用方面具有广阔的应用前景。这表明带有 PTFE/CuO 涂层的 6061Al 基材可以在恶劣条件下使用。综上所述，该方法特别适用于大规模工业化生产，在铝基材料的防腐和功能应用方面具有广阔的应用前景。这表明带有 PTFE/CuO 涂层的 6061Al 基材可以在恶劣条件下使用。综上所述，该方法特别适用于大规模工业化生产，在铝基材料的防腐和功能应用方面具有广阔的应用前景。