硬脂酸蚀刻和氨基改性SiO2/环氧复合沉积制备AlSi10Mg合金超疏水耐腐蚀涂层

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED

Progress in Organic Coatings Pub Date : 2025-07-25 DOI:10.1016/j.porgcoat.2025.109517

Yu Zhang , Lairong Xiao , Xiaojun Zhao , Zhongnan Bi , Ke Liu , Zhenwu Peng , Yuxiang Jiang , Jiarui Li , Yinlei Hou , Wei Li

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引用次数: 0

摘要

采用硬脂酸刻蚀和喷雾沉积两步法制备了AlSi10Mg合金的超疏水防腐涂层。通过硬脂酸蚀刻引起的衬底粗化和环氧树脂聚合过程中形成的交联微纳米特征的协同作用，实现了超疏水性所需的分层微纳米结构。表面能的降低是通过硬脂酸-铝反应生成的长链烷基，以及在改性二氧化硅纳米颗粒上接枝聚二甲基硅氧烷（PDMS）和聚四氟乙烯（PTFE）来实现的。值得注意的是，在96小时的盐雾测试后，涂层仍保持其超疏水性，显示出对基体的优异防腐性能。化学键合的低表面能组分与机械稳定的分层结构相结合，产生了持久的拒水性和增强的抗腐蚀性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Superhydrophobic and corrosion-resistant coating on AlSi10Mg alloy via stearic acid etching and amino-modified SiO2/epoxy composite deposition

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Superhydrophobic and corrosion-resistant coating on AlSi10Mg alloy via stearic acid etching and amino-modified SiO2/epoxy composite deposition

A superhydrophobic and anti-corrosive coating was fabricated on AlSi10Mg alloy through a two-step approach combining stearic acid etching and spray deposition of an amino-modified silica/epoxy composite. The hierarchical micro/nanostructure required for superhydrophobicity was achieved through the synergistic effect of substrate roughening induced by stearic acid etching and the cross-linked micro/nano-features formed during epoxy resin polymerization. Surface energy reduction was accomplished by the aligned long-chain alkyl groups generated from the stearic acid-aluminum reaction, along with the incorporation of polydimethylsiloxane (PDMS) and polytetrafluoroethylene (PTFE) grafted onto the modified silica nanoparticles. Notably, the coating maintained its superhydrophobic properties after 96 h of salt spray testing, demonstrating excellent corrosion protection for the substrate. The combination of chemically bonded low-surface-energy components and mechanically stable hierarchical structures resulted in durable water repellency and enhanced anti-corrosion performance.

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.