Meng Wang, Dawei Zhang, Zhen Yang
Aug 10, 2020
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Influential Citations
26
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Journal
Langmuir : the ACS journal of surfaces and colloids
Abstract
Stearic acid and fluoroalkylsilane are widely used chemical modification to fabricate super-hydrophobic surface in corrosion resistant exploration. However, extensive works have just severally explored their anticorrosive performance in salt solution. Very rare work has focus on comparing their corrosion resistant performance in corrosive solution (salt, alkali and acid) systematically. In this study, two kinds of super-hydrophobic surfaces were obtained on laser processed rough IN304 surface after the stearic acid and FAS modification processes, respectively. The investigation and comparison about anti-corrosion performance in salt, alkali and acid electrolyte were carried out via the potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) measurements. And the promotion mechanism or impairing mechanism were further proposed based on the results of surface wettability, surface morphology and X-ray photoelectron spectroscopy (XPS). Besides, the long-term anti-corrosion performance and the stability of surface wettability were also investigated. It is hoped that these research findings could provide an explicit guidance of suitable anti-corrosion methods selection for metal in different kinds of corrosive solution (salt, alkali and acid), which will further raise the promising prospect of functional surfaces for practical applications in industry.