Changyang Li , Xiaohan Liu , Peng Wang , Dun Zhang
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Design of dual-scale composite structured superhydrophobic surfaces for atmospheric corrosion prevention based on coalescence-induced droplet jumping
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 (Eint). 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.
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.
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