Realizing of Anisotropic Wetting and Superhydrophobicity on Stainless Steel Surface by Combining Picosecond Laser Ablation and Electrodeposition,Steel Research International

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Realizing of Anisotropic Wetting and Superhydrophobicity on Stainless Steel Surface by Combining Picosecond Laser Ablation and Electrodeposition
Steel Research International ( IF 1.9 ) Pub Date : 2021-04-16 , DOI: 10.1002/srin.202100119
Mengnan Hu ₁ , Kun Xu ₁ , Zhaoyang Zhang ₁ , Jian Gao ₁ , Tao Wang ₁ , Xueren Dai ₁ , Hao Zhu ₁

Affiliation

Superhydrophobic surface with anisotropic wetting and no low-surface-energy modification is investigated in which laser ablation, ultrasonic cleaning with degreasing solution, and electrodeposition are used sequentially. The macrogrooves are prepared by laser, and the micro–nanoscale structures on macrogrooves are prepared by electrodeposition, which is important to study the effect of hierarchical structures on anisotropic wetting. Herein, the surface morphology and surface crystal structure are discussed with respect to the laser-ablated surface and the subsequent degreasing solution super-cleaning/electrodeposited surfaces. At the same time, stainless steel surfaces with grooves of different periodic intervals (30–150 μm) and depths (10–40 μm) are systematically fabricated by laser only. When the periodic interval is smaller (<=50 μm), the static anisotropy is not obvious (5°–7°). However, the smaller the groove periodic interval and the greater the depth (<=30 μm), the more obvious the sliding anisotropy. Finally, dense and uniform micro–nanostructures on laser-ablated grooves are prepared by electrodeposition. The micro–nanohierarchical structures prepared by electrodeposition not only can make the droplets have superhydrophobic properties but also enhance the water drop's anisotropic sliding ability.

中文翻译：

皮秒激光烧蚀与电沉积相结合实现不锈钢表面各向异性润湿和超疏水性

研究了具有各向异性润湿且无低表面能改性的超疏水表面，其中依次使用激光烧蚀、脱脂溶液超声清洗和电沉积。大槽采用激光制备，大槽上的微纳米结构采用电沉积法制备，这对于研究分层结构对各向异性润湿的影响具有重要意义。在此，讨论了激光烧蚀表面和随后的脱脂溶液超清洁/电沉积表面的表面形貌和表面晶体结构。同时，仅通过激光系统地制造具有不同周期间隔（30-150 μm）和深度（10-40 μm）凹槽的不锈钢表面。当周期间隔较小（<=50 μm）时，静态各向异性不明显（5°–7°）。然而，凹槽周期间隔越小，深度越大（<=30 μm），滑动各向异性越明显。最后，通过电沉积在激光烧蚀凹槽上制备致密且均匀的微纳米结构。电沉积制备的微纳米分级结构不仅可以使水滴具有超疏水性，而且可以增强水滴的各向异性滑动能力。

更新日期：2021-04-16

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