A stearic Acid/CeO2 bilayer coating on AZ31B magnesium alloy with superhydrophobic and self-cleaning properties for corrosion inhibition

Xiang Liu; Tian C. Zhang; Huaqiang He; Like Ouyang; Shaojun Yuan

doi:10.1016/j.jallcom.2020.155210

A stearic Acid/CeO₂ bilayer coating on AZ31B magnesium alloy with superhydrophobic and self-cleaning properties for corrosion inhibition

Xiang Liu, Tian C. Zhang, Huaqiang He, Like Ouyang, Shaojun Yuan

Civil Engineering

Research output: Contribution to journal › Article › peer-review

117 Scopus citations

Abstract

Corrosion is one of the most challenging issues for the large-scale application of magnesium alloys. Fabricating a superhydrophobic surface with a low-cost, easy-to-handle method is meaningful for anti-corrosion protection of Mg alloys. In this study, a stearic acid/CeO₂ bilayer coating was prepared on AZ31B Mg by a simple electrodeposition method combined with immersion in stearic acid solution. The growth traits of the coating with different electrodeposition current densities and time were evaluated, which demonstrated that 60 min combined with 0.65 mA/cm² is the optimal electrodeposition condition. Besides, the wettability, anti-corrosion ability, durability, chemical stability and self-cleaning properties of the coating were comprehensively investigated. The results showed that the as-prepared coating exhibited a good superhydrophobic and self-cleaning property with CA>158° and SA<2°. Moreover, the coating demonstrated an improved anti-corrosion performance in 3.5 wt% NaCl solution and was quite stable in the atmosphere and in contact with pH droplets of 1–13.

Original language	English (US)
Article number	155210
Journal	Journal of Alloys and Compounds
Volume	834
DOIs	https://doi.org/10.1016/j.jallcom.2020.155210
State	Published - Sep 5 2020

Keywords

Anti-Corrosion
Cerium oxide
Magnesium alloy
Self-cleaning
Superhydrophobic coating

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2020.155210

Cite this

@article{79e7389448174151a6e7a841e006362e,

title = "A stearic Acid/CeO2 bilayer coating on AZ31B magnesium alloy with superhydrophobic and self-cleaning properties for corrosion inhibition",

abstract = "Corrosion is one of the most challenging issues for the large-scale application of magnesium alloys. Fabricating a superhydrophobic surface with a low-cost, easy-to-handle method is meaningful for anti-corrosion protection of Mg alloys. In this study, a stearic acid/CeO2 bilayer coating was prepared on AZ31B Mg by a simple electrodeposition method combined with immersion in stearic acid solution. The growth traits of the coating with different electrodeposition current densities and time were evaluated, which demonstrated that 60 min combined with 0.65 mA/cm2 is the optimal electrodeposition condition. Besides, the wettability, anti-corrosion ability, durability, chemical stability and self-cleaning properties of the coating were comprehensively investigated. The results showed that the as-prepared coating exhibited a good superhydrophobic and self-cleaning property with CA>158° and SA<2°. Moreover, the coating demonstrated an improved anti-corrosion performance in 3.5 wt% NaCl solution and was quite stable in the atmosphere and in contact with pH droplets of 1–13.",

keywords = "Anti-Corrosion, Cerium oxide, Magnesium alloy, Self-cleaning, Superhydrophobic coating",

author = "Xiang Liu and Zhang, {Tian C.} and Huaqiang He and Like Ouyang and Shaojun Yuan",

note = "Funding Information: The authors are grateful for the financial support of the National Natural Science Foundation of China ( 21676169 , 21978182 ), the measurement of XRD and Raman spectra by the Institute of New Energy and Low Carbon Technology of Sichuan University , XPS measurement by Ceshigo Research Service ( http://www.ceshigo.com ), and the FT-IR and electrochemical measurements technical assistance by the Engineering Teaching Center, School of Chemical Engineering, Sichuan University . Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = sep,

day = "5",

doi = "10.1016/j.jallcom.2020.155210",

language = "English (US)",

volume = "834",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - A stearic Acid/CeO2 bilayer coating on AZ31B magnesium alloy with superhydrophobic and self-cleaning properties for corrosion inhibition

AU - Liu, Xiang

AU - Zhang, Tian C.

AU - He, Huaqiang

AU - Ouyang, Like

AU - Yuan, Shaojun

N1 - Funding Information: The authors are grateful for the financial support of the National Natural Science Foundation of China ( 21676169 , 21978182 ), the measurement of XRD and Raman spectra by the Institute of New Energy and Low Carbon Technology of Sichuan University , XPS measurement by Ceshigo Research Service ( http://www.ceshigo.com ), and the FT-IR and electrochemical measurements technical assistance by the Engineering Teaching Center, School of Chemical Engineering, Sichuan University . Publisher Copyright: © 2020 Elsevier B.V.

PY - 2020/9/5

Y1 - 2020/9/5

N2 - Corrosion is one of the most challenging issues for the large-scale application of magnesium alloys. Fabricating a superhydrophobic surface with a low-cost, easy-to-handle method is meaningful for anti-corrosion protection of Mg alloys. In this study, a stearic acid/CeO2 bilayer coating was prepared on AZ31B Mg by a simple electrodeposition method combined with immersion in stearic acid solution. The growth traits of the coating with different electrodeposition current densities and time were evaluated, which demonstrated that 60 min combined with 0.65 mA/cm2 is the optimal electrodeposition condition. Besides, the wettability, anti-corrosion ability, durability, chemical stability and self-cleaning properties of the coating were comprehensively investigated. The results showed that the as-prepared coating exhibited a good superhydrophobic and self-cleaning property with CA>158° and SA<2°. Moreover, the coating demonstrated an improved anti-corrosion performance in 3.5 wt% NaCl solution and was quite stable in the atmosphere and in contact with pH droplets of 1–13.

AB - Corrosion is one of the most challenging issues for the large-scale application of magnesium alloys. Fabricating a superhydrophobic surface with a low-cost, easy-to-handle method is meaningful for anti-corrosion protection of Mg alloys. In this study, a stearic acid/CeO2 bilayer coating was prepared on AZ31B Mg by a simple electrodeposition method combined with immersion in stearic acid solution. The growth traits of the coating with different electrodeposition current densities and time were evaluated, which demonstrated that 60 min combined with 0.65 mA/cm2 is the optimal electrodeposition condition. Besides, the wettability, anti-corrosion ability, durability, chemical stability and self-cleaning properties of the coating were comprehensively investigated. The results showed that the as-prepared coating exhibited a good superhydrophobic and self-cleaning property with CA>158° and SA<2°. Moreover, the coating demonstrated an improved anti-corrosion performance in 3.5 wt% NaCl solution and was quite stable in the atmosphere and in contact with pH droplets of 1–13.

KW - Anti-Corrosion

KW - Cerium oxide

KW - Magnesium alloy

KW - Self-cleaning

KW - Superhydrophobic coating

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