Slippery liquid-infused porous surfaces with long-term durable antifouling and anti-corrosion performance via bimodal structure design

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-01-30 DOI:10.1016/j.surfcoat.2025.131850

Yike Meng , Kangwei Xu , Sining Li , Hongbo Cao , Chen Chen , Yaowei Wei , Shaojie Wu , Jiajia Tian

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引用次数: 0

Abstract

Slippery liquid-infused porous surfaces (SLIPS) possess great potential in antifouling and anti-corrosion applications owing to their remarkable liquid repellency. However, ensuring their long-term durability remains a challenge. Herein, long-term durable SLIPS coatings were prepared through constructing a micro/nano bimodal porous structure via plasma spraying of nano-agglomerated ceramic powders, followed by chemical modification and lubricant infiltration. The pore structure of SLIPS was tailored by varying spraying power. The bimodal porous-structured SLIPS exhibited long-term durability under various rigorous conditions including high shear stress, dynamic immersion, extensive water jet impact, and mechanical abrasion. Particularly, SLIPS-27 coating obtained at a spraying power of 27 kW displayed the most impressive stability and durability, which maintained great slipperiness with slightly increased sliding angle and 72.6 % lubricant retention even after dynamic immersion for 20 days. Additionally, after 10 days of bacterial adhesion assay and 20 days of algae adhesion assay, the SLIPS-27 coating demonstrated reduction rates of 87 %, 92 %, and 94 % with respect to settlements of E. coli, Chlorella, and P. tricornutum, respectively. Besides, after 10 days of immersion, the corrosion current density of SLIPS-27 was nearly two orders of magnitude lower than that of bare substrate, whereas the charge transfer resistance R_ct possessed an increase by two orders of magnitude. The exceptional long-term antifouling and anti-corrosion performance of SLIPS-27 was due to the optimal incorporation of micro/nano bimodal pores, eventually endowing the coating with outstanding lubricant locking and lubricant storage abilities. This work paves a new way to facilely prepare SLIPS with remarkable and durable antifouling and anti-corrosion performance, as well as to advance their practical applications.

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通过双模结构设计，注入液体的多孔滑面具有长期持久的防污和防腐蚀性能

注入液体的滑爽多孔表面（SLIPS）具有显著的液体排斥性，因此在防污和防腐蚀应用中具有巨大潜力。然而，确保其长期耐久性仍然是一个挑战。本文通过等离子喷涂纳米团聚陶瓷粉末，构建微/纳米双峰多孔结构，然后进行化学改性和润滑剂渗透，制备出长期耐用的 SLIPS 涂层。SLIPS 的孔隙结构可通过改变喷涂功率来定制。双峰多孔结构 SLIPS 在高剪切应力、动态浸泡、大面积水射流冲击和机械磨损等各种苛刻条件下均表现出长期耐久性。尤其是在喷涂功率为 27 kW 时获得的 SLIPS-27 涂层，其稳定性和耐久性最为突出，即使在动态浸泡 20 天后，仍能保持极佳的滑爽性，滑动角略有增加，润滑剂保留率为 72.6%。此外，经过 10 天的细菌附着试验和 20 天的藻类附着试验后，SLIPS-27 涂层对大肠杆菌、小球藻和三尖杉的沉降率分别降低了 87%、92% 和 94%。此外，浸泡 10 天后，SLIPS-27 的腐蚀电流密度比裸基底低近两个数量级，而电荷转移电阻 Rct 则增加了两个数量级。SLIPS-27 卓越的长期防污和防腐蚀性能得益于微米/纳米双峰孔的最佳结合，最终赋予涂层出色的润滑剂锁定和润滑剂存储能力。这项工作为轻松制备具有显著、持久防污和防腐蚀性能的 SLIPS 铺平了新的道路，并推动了其实际应用。

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.