Design of dual-scale composite structured superhydrophobic surfaces for atmospheric corrosion prevention based on coalescence-induced droplet jumping

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2022-04-01 DOI:10.1016/j.jtice.2022.104308

Changyang Li , Xiaohan Liu , Peng Wang , Dun Zhang

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引用次数: 0

Abstract

Background

The coalescence-induced droplet self-jumping behavior on superhydrophobic surfaces (SHS) provides a new idea for atmospheric corrosion prevention. Although the influence on droplet self-jumping on different scales in single structure has been well understood, the mechanism of composite structures on droplet self-jumping, especially the process of atmospheric corrosion prevention is still unclear.

Methods

In this work, SHS that composite structured on micron-scale and nano-scale were designed on copper substrate at given salt solution concentration using hydrothermal method; and the difference of their droplet self-jumping behavior on surface was explored in energy perspective.

Significant findings

Results showed that the nano-scale composite structured SHS was more conducive to droplet self-jumping for having smaller top layer structures and interfacial adhesion (E_int). Furthermore, the nano-scale composite structured SHS exhibited superior corrosion protection performance due to the wetting transition by droplet self-jumping. This study provides theoretical guidance for the development of corrosion prevention with composite structured SHS based on coalescence-induced droplet self-jumping behavior.

Abstract Image

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基于聚结诱导液滴跳变的双尺度复合结构超疏水表面大气防腐设计

超疏水表面聚结诱导的液滴自跳行为为大气腐蚀防护提供了新的思路。虽然我们已经很好地了解了单一结构中不同尺度对液滴自跳的影响，但复合结构对液滴自跳的影响机制，特别是大气防腐过程的影响机制尚不清楚。方法在一定盐溶液浓度下，采用水热法在铜衬底上设计微米级和纳米级复合材料SHS;并从能量角度探讨了它们在表面上自跳行为的差异。结果表明，纳米级复合结构SHS具有更小的顶层结构和界面粘附力(Eint)，更有利于液滴自跳。此外，纳米级复合结构SHS由于液滴自跳变的润湿转变而表现出优异的防腐性能。该研究为基于聚结诱导液滴自跳行为的复合结构SHS防腐技术的发展提供了理论指导。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.