Nanostructuring of laser textured surface to achieve superhydrophobicity on engineering metal surface
Nanostructuring of laser textured surface to achieve superhydrophobicity on engineering metal surface
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DOI：
10.2351/1.5096148
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发表时间：
2019-04
影响因子：
2.1
通讯作者：
A. Samanta;Qinghua Wang;S. Shaw;Hongtao Ding
中科院分区：
文献类型：
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作者：
A. Samanta;Qinghua Wang;S. Shaw;Hongtao Ding
超疏水金属合金表面越来越多地应用于航空航天和海军应用，以实现防冰、减阻、自清洁和高效光吸收能力。新兴的基于激光的表面纹理方法展示了制造这些表面的巨大潜力，具有高加工精度和灵活性的优点。在这项研究中，利用新型纳秒激光高通量表面纳米结构工艺在工程金属表面上实现了超疏水性。首先，高能纳秒脉冲激光以大的空间增量和快速的处理速度扫描浸没在水中的金属表面。之后，通过将激光纹理化的表面浸入氯硅烷试剂中特定的时间来进一步处理。这两个过程的结果是在金属表面上产生微米级和纳米级的表面特征。这些特征是通过扫描电子显微镜在 AISI 4130 钢工件上测量的。表面化学通过 X 射线光电子能谱进行表征，并与加工条件相关。每个工艺步骤完成后，还会对这些特征进行比较，以了解它们对纹理表面的单独和累积影响。研究发现，在激光制绒工艺阶段利用高激光功率强度将显着增强氯硅烷处理后的表面纳米结构效果，导致特征尺寸减小和特征密度增加。超疏水金属合金表面越来越多地应用于航空航天和海军应用，以实现防冰、减阻、自清洁和高效光吸收能力。新兴的基于激光的表面纹理方法展示了制造这些表面的巨大潜力，具有高加工精度和灵活性的优点。在这项研究中，利用新型纳秒激光高通量表面纳米结构工艺在工程金属表面上实现了超疏水性。首先，高能纳秒脉冲激光以大的空间增量和快速的处理速度扫描浸没在水中的金属表面。之后，通过将激光纹理化的表面浸入氯硅烷试剂中特定的时间来进一步处理。这两个过程的结果是在金属表面上产生微米级和纳米级的表面特征。这些特征是通过扫描电子显微镜在 AISI 4130 钢工件上测量的。
Superhydrophobic metal alloy surfaces are increasingly employed in aerospace and naval applications for anti-icing, drag reduction, self-cleaning, and high-efficiency light absorption capabilities. Emerging laser-based surface texturing methods demonstrate significant potential for manufacturing these surfaces, with the advantages of high processing precision and flexibility. In this research, superhydrophobicity is achieved on engineering metal surfaces using a novel nanosecond Laser-based High-throughput Surface Nanostructuring process. First, a high-energy nanosecond pulse laser scans the metal surface submerged in water using a large spatial increment and a fast processing speed. After that, the laser-textured surface is further treated by immersion in a chlorosilane reagent for a specific period of time. As a result of these two processes, micro- and nano-scale surface features are generated on the metal surface. These features are measured on AISI 4130 steel workpieces through scanning electron microscopy. The surface chemistry is characterized by x-ray photoelectron spectroscopy and correlated with processing conditions. The features are also compared after completion of each process step to understand their individual and cumulative effect on the textured surface. It is found that utilizing a high laser power intensity during the laser texturing process phase will significantly enhance surface nanostructuring effects after the chlorosilane treatment, resulting in feature size decrease and increase in feature density.Superhydrophobic metal alloy surfaces are increasingly employed in aerospace and naval applications for anti-icing, drag reduction, self-cleaning, and high-efficiency light absorption capabilities. Emerging laser-based surface texturing methods demonstrate significant potential for manufacturing these surfaces, with the advantages of high processing precision and flexibility. In this research, superhydrophobicity is achieved on engineering metal surfaces using a novel nanosecond Laser-based High-throughput Surface Nanostructuring process. First, a high-energy nanosecond pulse laser scans the metal surface submerged in water using a large spatial increment and a fast processing speed. After that, the laser-textured surface is further treated by immersion in a chlorosilane reagent for a specific period of time. As a result of these two processes, micro- and nano-scale surface features are generated on the metal surface. These features are measured on AISI 4130 steel workpieces through scanning electron micr...