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Corrosion inhibition of AA3003 aluminum alloy by self-assembled layers of myristic acid

María V. Puc-Oxté (Física Aplicada, Cinvestav Unidad Merida, Merida, Mexico)
Máximo A. Pech-Canul (Física Aplicada, Cinvestav Unidad Merida, Merida, Mexico)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 10 May 2021

Issue publication date: 2 July 2021

141

Abstract

Purpose

This paper aims to prepare highly hydrophobic films on aluminum AA3003 using myristic acid (MA) and evaluate its corrosion protection efficiency in a low-chloride solution.

Design/methodology/approach

The aluminum surface was initially treated with boiling water to develop a porous nanostructure, and then surface modification was carried out in ethanolic solutions with different concentrations of MA. The surface morphology, wetting behavior and film composition were first characterized, and then, the corrosion behavior was evaluated with electrochemical techniques.

Findings

The best hydrophobicity and corrosion resistance were obtained with 50 mM of MA. For such concentration, a water contact angle of 140° and protective efficiency of 96% were achieved. A multilayer structure was revealed by scanning electron microscope and X-ray photoelectron spectroscopy.

Originality/value

The results of this work shed light on the anticorrosion performance of fatty acid self-assembled multilayers on the surface of Al–Mn alloys.

Keywords

Acknowledgements

M.V. Puc-Oxté acknowledges support from the Mexican Council of Science and Technology (CONACYT) through a scholarship to pursue her doctoral studies. Also, the technical assistance provided by Ms Marbella Echeverría (in the corrosion/electrochemistry lab) and by Mr W. Cauich Ruiz (XPS measurements) is gratefully acknowledged.

Citation

Puc-Oxté, M.V. and Pech-Canul, M.A. (2021), "Corrosion inhibition of AA3003 aluminum alloy by self-assembled layers of myristic acid", Anti-Corrosion Methods and Materials, Vol. 68 No. 3, pp. 137-149. https://doi.org/10.1108/ACMM-09-2020-2374

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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