试验优化法确定阳极氧化工艺制备铝基疏水表面

通过试验优化方法，找出阳极氧化过程各因素对铝表面接触角的影响规律，确定提高铝基疏水接触角的最佳氧化工艺条件。优化结果表明，因素电流密度的极差最大，且具有显著性水平，相比氧化最低温度、氧化最高温度和氧化时间（30~60min），对氧化膜表面疏水接触角大小的影响最突出，而氧化最低温度次之。由体式显微镜和电镜分析可知，在优化工艺下制备的铝氧化膜表面获得了具有粗糙形貌的多孔结构。通过分析发现，其疏水性服从cassie—Baxter方程。

Optimizing Aluminium Alloy Anodization Process with Orthogonal Test for Fabricating Hydrophobic Surface

Aluminium alloy anodization process and hydrophobic conditions were optimized with orthogonal experiments. The results show that the optimized process can be used to improve the hydrophobic performance of anode oxidation film. The result of orthogonal experimental design shows that the polar difference value of electric current density is largest. Electric current density influence the contact angle of anode oxidation film seriously and the lowest temperature of oxidation rank only second to it. The highest temperature of oxidation and oxidation time （30rain -60min） behave less obviously. With analysis of stereo microscope and electron microscope, the surface of oxidation film prepared in op- timized process obtains loose structure with rough morphology. And the influence of the surface morphology on the hy- drophobicity was analyzed to follow the Cassis-Baxter model. The tests can provide a kind of feasible research method and experiment bases for aluminium alloy anodization production.