Title

Fabrication of superhydrophobic structure on 5A05 aluminum alloy surface and its corrosion resistance

Document Type

Journal Article

Publication Title

Rare Metal Materials and Engineering

Publisher

Northwest Institute for Nonferrous Metal Research

School

School of Engineering

RAS ID

28372

Comments

Originally published as: Chuanwei, Z., Xuewu, L., Tian, S., & Laichang, Z. (2018). Fabrication of superhydrophobic structure on 5A05 aluminum alloy surface and its corrosion resistance. Rare Metal Materials and Engineering, 47(10), 2980-2985. Original publication available here

Abstract

This work developed a simple and low-cost method to achieve superior superhydrophobicity and corrosion resistance of 5A05 Al alloy. The microscale wrinkles covered with nanoscale craters were prepared by a one-step wire electrical discharge machining process. Meanwhile, the wettability and corrosion resistance of the as-prepared structures were investigated after the low-surface-energy modification. The results show that the modified surface exhibits excellent superhydrophobicity with a water contact angle (CA) of 152.7° and a rolling angle (RA) of 7.1°. Furthermore, its corrosion resistance was assessed by electrochemical tests. Ultimately, owing to the trapped air in micro-nano structures, the solid-air-liquid interface helps to resist seawater penetration on the superhydrophobic surface and significantly enhances its corrosion resistance.

DOI

10.1016/S1875-5372(18)30221-2

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