阳极氧化铝(AAO)是一种具有较高孔隙率的材料,其高比表面积不仅更易接触腐蚀液体,多孔结构也导致了腐蚀液体更易在孔道中积留,加速腐蚀过程。一种常规的思路是利用固态氧化材料堵孔来解决这一问题。另一种有效的方式是利用气体来堵孔,比如,在AAO表面涂覆一层超疏水涂层,使孔内形成气柱,让腐蚀液体无法渗入孔内。不过,疏水涂层在长期的使用过程中,腐蚀液会 Anodic aluminum oxide (AAO) is a material with higher porosity. Its high specific surface area not only makes it easier to contact with the corrosive liquid, but also leads to the corroded liquid more likely to accumulate in the pores and accelerate the corrosion process. A common idea is to use solid oxide plugging holes to solve this problem. Another effective method is to use gas to block the pores. For example, a superhydrophobic coating is applied to the surface of the AAO to form a gas column in the pores so that the etching liquid can not penetrate into the pores. However, the hydrophobic coating in the long-term use of the process, the etching solution will be