Comparison of barrier properties for a superhydrophobic epoxy coating under different simulated corrosion environments

被引：205
|
作者：
Zhang, Dawei [1 ]
Qian, Hongchang [1 ]
Wang, Luntao [1 ]
Li, Xiaogang [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, Ctr Corros & Protect, Beijing 100083, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China
来源：
CORROSION SCIENCE | 2016年 / 103卷
基金：
中国国家自然科学基金;
关键词：
Organic coatings; EIS; Interfaces; SUPER-HYDROPHOBIC FILM; ELECTROCHEMICAL IMPEDANCE; ATMOSPHERIC CORROSION; ORGANIC COATINGS; MAGNESIUM ALLOY; COATED METALS; WATER-UPTAKE; SURFACE; PROTECTION; FABRICATION;
D O I：
10.1016/j.corsci.2015.11.023
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using soft lithography, a superhydrophobic epoxy coating was prepared with lotus leaf-like surface microstructures. Electrochemical measurements were performed to compare barrier properties of the superhydrophobic coating with a regular smooth coating during immersion, wet-dry cyclic immersion and salt spray tests. The results demonstrated that the superhydrophobic coating can act as a much stronger barrier than can the regular coating when immersed because of trapped air films in the surface microstructures. However, the ultrafine electrolyte particles in the salt spray can easily penetrate these microstructures and deposit on the coating surface, which leads to the faster deterioration of the superhydrophobic coating. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：230 / 241
页数：12
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