Sun Haoyang, Lei Fan, Li Tao, Han He, Li Bin, Li Dandan, Sun Dazhi
Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China.
ACS Appl Mater Interfaces. 2021 Feb 10;13(5):6678-6687. doi: 10.1021/acsami.0c21667. Epub 2021 Feb 1.
The large-area preparation of excellent lubricating materials with good resistance to leakage and an oxidation atmosphere and ease of replenishment has remained a challenge. Here, inspired by the pitcher slippery surface, we have fabricated multifunctional lubricant-infused surfaces (LISs) via a scalable technique, in which the solid lubricants and the lubricant oil are reciprocally well-combined to overcome their respective weakness. The designed LIS coating exhibits a multiple lubrication ability with a coefficient of friction of 0.022 and ball wear rate of 2.62 × 10 m·N·m in air, which are 21 times and three orders of magnitude lower than those of the steel-steel contact under macroscale test conditions (10 N, 5 Hz), respectively. In addition, the outstanding water-repellent and self-cleaning LIS coating enables the resistance to the strong acid or base corrosion even after 30 days of immersion, and the excellent anticorrosion performance during the electrochemical corrosion test. With the exceptional lubrication, multifunctionality performance, and large-scale fabrication capacity, the prepared LIS coating should find potential applications in machines, pipelines, navigation, infrastructures, outdoor equipment, and so on.
大面积制备具有良好的抗泄漏性、抗氧化气氛和易于补充的优异润滑材料仍然是一项挑战。在此，受猪笼草光滑表面的启发，我们通过一种可扩展技术制造了多功能注油润滑表面（LISs），其中固体润滑剂和润滑油相互良好结合，以克服它们各自的弱点。所设计的LIS涂层在空气中表现出多重润滑能力，摩擦系数为0.022，球磨损率为2.62×10 m·N·m，在宏观测试条件（10 N，5 Hz）下，分别比钢-钢接触低21倍和三个数量级。此外，出色的疏水和自清洁LIS涂层即使在浸泡30天后仍能抵抗强酸或强碱腐蚀，并且在电化学腐蚀测试中具有优异的防腐性能。凭借出色的润滑、多功能性能和大规模制造能力，所制备的LIS涂层应在机械、管道、航海、基础设施、户外设备等方面找到潜在应用。
