ABSTRACT

In recent research, a method for manufacturing superhydrophobic metal surfaces using pulse laser texturing has been developed. After laser texturing, a sample can be converted into a superhydrophobic surface by aging the sample for several weeks in ambient air. Research on this method is currently focused on metal surfaces, such as aluminium, copper and so on. There are few studies of iron and steel materials, and the process and principle of wetting conversion is not sufficiently clear, and thus, further research is needed. In this study, a stainless steel surface with a large number of Gaussian pits was prepared using a nanosecond fibre laser, which was then naturally converted into a superhydrophobic surface in air. The effect of the roughness, lattice arrangement and chemical composition of a surface on its hydrophobic properties was studied to realize controllable hydrophobic properties. A hexagonal lattice surface prepared using 10 processing cycles showed the best hydrophobic performance, with contact and rolling angles of 161.3 and 3.2°, respectively.

摘要

在最近的研究中，开发了一种使用脉冲激光纹理制造超疏水金属表面的方法。激光纹理化后，样品可以通过在环境空气中老化数周而转化为超疏水表面。目前对该方法的研究主要集中在金属表面，如铝、铜等。对钢铁材料的研究较少，湿法转化的过程和原理还不够明确，有待进一步研究。在这项研究中，使用纳秒光纤激光器制备了具有大量高斯凹坑的不锈钢表面，然后在空气中自然转化为超疏水表面。粗糙度的影响，研究了表面疏水性的晶格排列和化学成分，以实现可控的疏水性。使用 10 个加工循环制备的六边形晶格表面显示出最佳的疏水性能，接触角和滚动角分别为 161.3°和 3.2°。