Insitu grown superhydrophobic Zn-Al layered double hydroxides films on magnesium alloy to improve corrosion properties

被引：120

作者：

Zhou, Meng ^{[1
]}

Pang, Xiaolu ^{[1
]}

Wei, Liang ^{[1
]}

Gao, Kewei ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Mat Phys & Chem, Beijing 100083, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2015年 / 337卷

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Superhydrophobic; Micro/nanostructure; Magnesium alloy; Corrosion resistance; HYDROTALCITE CONVERSION FILM; ONE-STEP ELECTRODEPOSITION; SUPER-HYDROPHOBIC SURFACE; CERIUM OXIDE-FILM; MG ALLOY; HIERARCHICAL STRUCTURE; FABRICATION; RESISTANCE; BEHAVIOR; FACILE;

D O I：

10.1016/j.apsusc.2015.02.086

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A hierarchical superhydrophobic zinc-aluminum layered double hydroxides (Zn-Al LDHs) film has been fabricated on a magnesium alloy substrate via a facile hydrothermal crystallization method following chemical modification. The characteristics of the films were investigated by X-ray diffraction (XRD), scanning electronic microscope (SEM), and energy dispersive spectroscopy (EDS). XRD patterns and SEM images showed that the micro/nanoscale hierarchical LDHs film surfaces composed of ZnO nanorods and Zn-Al LDHs nanowalls structures. The static contact angle (CA) for the prepared surfaces was observed at around 165.6.. The corrosion resistance of the superhydrophobic films was estimated by electrochemical impedance spectroscopy (EIS) and potentiondynamic polarization measurement. EIS and polarization measurements revealed that the superhydrophobic Zn-Al LDHs coated magnesium alloy had better corrosion resistance in neutral 3.5 wt.% NaCl solution. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：172 / 177

页数：6

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