A pine needle-like superhydrophobic Zn/ZnO coating with excellent mechanochemical robustness and corrosion resistance

IF 8.4

MATERIALS & DESIGN Pub Date : 2023-01-01 DOI:10.1016/j.matdes.2022.111583

Ruiqian Li, Mengqing Li, Xin Wu, Huizhu Yu, Rencheng Jin, Jun Liang

{"title":"A pine needle-like superhydrophobic Zn/ZnO coating with excellent mechanochemical robustness and corrosion resistance","authors":"Ruiqian Li, Mengqing Li, Xin Wu, Huizhu Yu, Rencheng Jin, Jun Liang","doi":"10.1016/j.matdes.2022.111583","DOIUrl":null,"url":null,"abstract":"The superhydrophobic Zn-based coating with hierarchical structure has good prospects in metal anticorrosion. However, the practical application of superhydrophobic coating is still limited by the poor mechanical stability of micro/nano hierarchical structure. Herein, a robust superhydrophobic Zn/ZnO coating with pine needle-like structure and superior corrosion resistance was design and constructed. The micro-scale polyhedral Zn was fabricated on steel followed by the deposition of radially aligned ZnO nanorods, forming a novel pine needle-like hierarchical structure, which was finally modified by stearic acid. Notably, the pine needle-like structured Zn/ZnO (Zn/ZnO-3) coating exhibits excellent superhydrophobicity with contact angle of 166.8 ± 1.4° and sliding angle of 2.6 ± 0.5°. What's more, Zn/ZnO-3 coating maintains superhydrophobicity after suffering from strong acid/alkali, tape peeling, water drop impact and sandpaper abrasion tests. Compared with carbon steel and hydrophobic Zn coating, the corrosion current density of superhydrophobic Zn/ZnO-3 coating is decreased by approximately 4 and 3 orders of magnitude, respectively. The superior mechanochemical stability and anti-corrosion performance of superhydrophobic Zn/ZnO-3 coating is ascribed to its pine needle-like structure. Overall, this work provides a novel strategy to design hierarchical structured superhydrophobic surfaces with excellent mechanochemical stability and corrosion resistance, holding great prospects in metallic corrosion protection.","PeriodicalId":101318,"journal":{"name":"MATERIALS & DESIGN","volume":"18 1","pages":"0"},"PeriodicalIF":8.4000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"MATERIALS & DESIGN","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1016/j.matdes.2022.111583","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 8

Abstract

The superhydrophobic Zn-based coating with hierarchical structure has good prospects in metal anticorrosion. However, the practical application of superhydrophobic coating is still limited by the poor mechanical stability of micro/nano hierarchical structure. Herein, a robust superhydrophobic Zn/ZnO coating with pine needle-like structure and superior corrosion resistance was design and constructed. The micro-scale polyhedral Zn was fabricated on steel followed by the deposition of radially aligned ZnO nanorods, forming a novel pine needle-like hierarchical structure, which was finally modified by stearic acid. Notably, the pine needle-like structured Zn/ZnO (Zn/ZnO-3) coating exhibits excellent superhydrophobicity with contact angle of 166.8 ± 1.4° and sliding angle of 2.6 ± 0.5°. What's more, Zn/ZnO-3 coating maintains superhydrophobicity after suffering from strong acid/alkali, tape peeling, water drop impact and sandpaper abrasion tests. Compared with carbon steel and hydrophobic Zn coating, the corrosion current density of superhydrophobic Zn/ZnO-3 coating is decreased by approximately 4 and 3 orders of magnitude, respectively. The superior mechanochemical stability and anti-corrosion performance of superhydrophobic Zn/ZnO-3 coating is ascribed to its pine needle-like structure. Overall, this work provides a novel strategy to design hierarchical structured superhydrophobic surfaces with excellent mechanochemical stability and corrosion resistance, holding great prospects in metallic corrosion protection.

查看原文本刊更多论文

一种松针状超疏水锌/ZnO涂层，具有优异的机械化学坚固性和耐腐蚀性

具有分层结构的超疏水锌基涂层在金属防腐方面具有良好的应用前景。然而，超疏水涂层的实际应用仍然受到微纳分层结构机械稳定性差的限制。本文设计并制备了一种具有松针状结构和优异耐腐蚀性的超疏水Zn/ZnO涂层。在钢表面制备了微尺度多面体Zn，并沉积了径向排列的ZnO纳米棒，形成了一种新型的松针状分层结构，最后用硬脂酸对其进行修饰。值得注意的是，松针状结构Zn/ZnO (Zn/ZnO-3)涂层具有良好的超疏水性，接触角为166.8±1.4°，滑动角为2.6±0.5°。Zn/ZnO-3涂层经过强酸/强碱、胶带剥落、水滴冲击、砂纸磨损等试验后，仍保持超疏水性。与碳钢和疏水Zn涂层相比，超疏水Zn/ZnO-3涂层的腐蚀电流密度分别降低了约4个和3个数量级。超疏水Zn/ZnO-3涂层具有优异的机械化学稳定性和抗腐蚀性能，主要归因于其松针状结构。总之，这项工作为设计具有优异机械化学稳定性和耐腐蚀性的分层结构超疏水表面提供了一种新的策略，在金属腐蚀防护中具有广阔的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

MATERIALS & DESIGN

自引率

0.00%

发文量

期刊介绍： Materials and Design is a multidisciplinary journal that publishes original research reports, review articles, and express communications. It covers a wide range of topics including the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, as well as the design of materials and engineering systems, and their applications in technology. The journal aims to integrate various disciplines such as materials science, engineering, physics, and chemistry. By exploring themes from materials to design, it seeks to uncover connections between natural and artificial materials, and between experimental findings and theoretical models. Manuscripts submitted to Materials and Design are expected to offer elements of discovery and surprise, contributing to new insights into the architecture and function of matter.