提出了一种利用纳秒光纤激光快速制备超疏水铝板表面的方法, 对样品表面的接触角和粗糙度进行了测量。烘烤处理激光加工后的样品, 得到了一系列具有不同润湿性能的铝板表面, 增加激光能量密度可得到超疏水表面。研究结果表明, 增加激光能量密度除了能提高铝板表面的粗糙度, 还会形成明显的微纳二级结构; 空气占铝板超疏水复合接触面总面积的90%以上; 纳秒激光诱导铝板超疏水表面是微纳结构和化学成分共同作用的结果。

One method to fabricate super-hydrophobic aluminum surfaces by using nanosecond fiber lasers is proposed. After the laser-processed samples are baked, a series of aluminum surfaces with different wetting properties are obtained. A super-hydrophobic surface can be obtained by increasing the laser fluence. The study results show that, with the increase of laser fluence, not only the aluminum surface roughness increases, but also a clear micro-nano two-level structure is formatted. The area ratio between air and the total area of the super-hydrophobic aluminum composite contact surface is 90%. The super-hydrophobic surface induced by nanosecond laser is attributed to the coaction of micro-nano structures and chemical compositions.