Oil-Repellent and Corrosion Resistance Properties of Superhydrophobic and Superoleophobic Aluminum Alloy Surfaces Based
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Oil‑Repellent and Corrosion Resistance Properties of Superhydrophobic and Superoleophobic Aluminum Alloy Surfaces Based on Nanosecond Laser‑Textured Treatment Zhongxu Lian1 · Jinkai Xu1 · Peng Yu1 · Zhanjiang Yu1 · Zuobin Wang2 · Huadong Yu1 Received: 31 January 2019 / Accepted: 14 July 2019 © The Korean Institute of Metals and Materials 2019
Abstract As two typical special wettability materials, superhydrophobic and superoleophobic surfaces are the most widely studied interfaces because of their excellent water-or oil-repellent ability. However, how to use a simple strategy to obtain those surfaces is still a huge challenge. On the other hand, corrosion tend to occur while using metallic materials, resulting in poor performance of metallic equipment and even serious safety hazards. In this work, a one-step strategy of nanosecond laser ablation was presented to construct the microstructures acquired by superhydrophobic and superoleophobic aluminum alloy surfaces. The superhydrophobic and superoleophobic properties of microstructured surfaces were obtained via high temperature and fluorosilane treatments on laser-processed surfaces, respectively, and the oil-repellent and corrosion resistance properties of both substrates were studied. The potentiodynamic polarization test shows that the superoleophobic surface had a better corrosion resistance than the superhydrophobic surface, which will provide an effective protection for the bare aluminum alloy. Meanwhile, the superoleophobic surface had good chemical stability. It is believed that the nanosecond laser technology can offer an effective strategy for constructing the microstructures acquired by large-area superhydrophobic and superoleophobic surfaces on aluminum alloy materials. Keywords Nanosecond laser ablation · Superhydrophobic and superoleophobic surfaces · Corrosion resistance · Chemical stability
1 Introduction Superhydrophobic surfaces known as the “lotus effect” have recently attracted immense commercial and academic attention, due to their wide potential in various fields, such as self-cleaning [1–3], anti-icing [4, 5] and oil–water separation [6, 7]. Unfortunately, the engineering value of superhydrophobic surfaces is greatly limited as they are hard to resist wetting of oil and will lose superhydrophobicity * Jinkai Xu [email protected] * Huadong Yu [email protected] 1
Ministry of Education Key Laboratory for Cross‑Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China
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once contaminated with oil [8]. Obviously, the acquiring of superoleophobicity is extremely urgent for superhydrophobic surfaces in practical uses. Recently, some fabrication techniques have successfully constructed microstructures acquired by superoleophobic surfaces, such as anodization [9], chemical etching [10, 11], layer-by-layer self-assembly [12], and dip-coat
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