Construction of superhydrophobic surfaces with different water adhesion on the low-temperature steels by picosecond laser processing

材料科学 超亲水性 润湿 粘附 纳米技术 腐蚀 激光器 复合材料 冶金 光学 物理
作者
Xiaoqiu Chen,Shibin Sun,Dongsheng Wang,Xiaojie Zhu,Yuliang Zhang,Shicong Niu,Junfeng Li,Yingchang Jiang,Xueting Chang
出处
期刊:Surface & Coatings Technology [Elsevier BV]
卷期号:477: 130340-130340 被引量:12
标识
DOI:10.1016/j.surfcoat.2023.130340
摘要

Manufacturing superhydrophobic metallic surfaces with desired water adhesion for intended applications such as anti-icing and microdroplets transportation remains a grand challenge. Herein, we demonstrated the fabrication of the superhydrophobic surfaces with different water adhesion on the low-temperature steels including DH36, EH40 and FH36 steels via combined strategies of picosecond laser processing and room-temperature vacuum processing. The laser processing could regulate the dimension of the micro/nanostructures on the low-temperature steel surfaces and the vacuum processing controlled the surface chemical compositions of the laser-processed surfaces, leading to the transition of wetting behaviors from the superhydrophilic states, then to the superhydrophobic Wenzel's states with strong water adhesion and finally to the superhydrophobic Cassie-Baxter's states with weak water adhesion. The superhydrophobic surfaces with the Wenzel's states showed great potential in non-destructive and selective transportation of water droplets, while those with the Cassie-Baxter's states exhibited promising anti-icing performance as well as desirable corrosion, impact, and erosion resistance. This work provides an effective, pollution-free, and stable route for controlling the superwettability of the low-temperature steel surfaces and could find promising applications in surface modifications of metals and alloys.
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