采用溶胶–凝胶技术在铝表面涂覆氧化铝薄膜，再利用长链脂肪酸对氧化铝薄膜进行疏水改性，在金属铝表面构筑了具有较强减摩性能的超疏水薄膜。研究了沸水及水合肼溶液处理对氧化铝薄膜表面微纳织构的影响；探讨了脂肪酸分子结构对薄膜静态和动态润湿性的影响，利用球盘式微纳米摩擦磨损试验机评价了薄膜的摩擦学性能。结果显示，水合肼溶液处理后的氧化铝薄膜经硬脂酸改性后不仅表现出超疏水性能，而且具有较强的减摩性能。
A simple two-step process was developed in this study to render aluminum with lower friction and superhydrophobicity. Alumina film was firstly fabricated on aluminum by Sol-Gel technology. Fatty acid was then deposited on alumina film to endow superhydrophobicity. The surface morphology of alumina film after treatment using boiling water or hydrazine solution was evaluated. The effect of molecular structure of fatty acid on the wettability of the composite film was investigated. Friction-reducing behavior of the superhydrophobic films on aluminum was determined in a ball-on-plate configuration. It was found that the stearic acid film on alumina film treated by hydrazine solution showed superhydrophobicity and low friction, leading to significantly extending lifespan of the alumina film.
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