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.

中文翻译：

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肉豆蔻酸自组装层对AA3003铝合金的腐蚀抑制

目的

本文旨在使用肉豆蔻酸 (MA) 在 AA3003 铝上制备高疏水性薄膜，并评估其在低氯化物溶液中的腐蚀保护效率。

设计/方法/方法

铝表面首先用沸水处理以形成多孔纳米结构，然后在不同浓度 MA 的乙醇溶液中进行表面改性。首先表征表面形貌、润湿行为和薄膜成分，然后用电化学技术评估腐蚀行为。

发现

使用 50 mM MA 获得最佳疏水性和耐腐蚀性。对于这样的浓度，实现了 140° 的水接触角和 96% 的保护效率。通过扫描电子显微镜和X射线光电子能谱揭示了多层结构。

原创性/价值

这项工作的结果揭示了 Al-Mn 合金表面脂肪酸自组装多层膜的防腐性能。