1 Department of Chemical Engineering, Indian Institute of Technology (Indian School of Mines) Dhanbad , Dhanbad, Jharkhand 826004 , India.
2 Nanoprobe Laboratory for Bio- & Nanotechnology and Biomimetics, The Ohio State University , Columbus, OH 43210 , USA.
Philos Trans A Math Phys Eng Sci. 2019 Feb 11;377(2138):20180272. doi: 10.1098/rsta.2018.0272.
Durable, superhydrophobic and self-cleaning aluminium surfaces with high corrosion resistance are desirable in many industrial applications. In this study, a facile approach is used to produce aluminium surfaces with superhydrophobicity with a low tilt angle by creating desired roughness structure by immersing in NaOH solution followed by lowering the surface energy by immersing in hexadecyltrimethoxysilane solution. The coated samples show water contact angle of 164 ± 7° and tilt angle of 5 ± 1°. Droplet dynamics of the coated surfaces was investigated. Surfaces exhibited self-cleaning properties. In addition, mechanical, chemical and thermal stability tests were performed. Electrochemical tests of coated surfaces demonstrated anti-corrosion properties with low corrosion current density and high corrosion potential. This article is part of the theme issue 'Bioinspired materials and surfaces for green science and technology'.
在许多工业应用中，具有高耐腐蚀性的耐用、超疏水和自清洁的铝表面是人们所期望的。在这项研究中，通过在 NaOH 溶液中浸泡以形成所需的粗糙度结构，然后再将其浸入十六烷基三甲氧基硅烷溶液中以降低表面能，从而采用一种简便的方法制得了具有低倾斜角的超疏水铝表面，其具有 164±7°的水接触角和 5±1°的倾斜角。对涂覆样品的液滴动力学进行了研究。结果表明，涂层表面具有自清洁性能。此外，还进行了机械、化学和热稳定性测试。涂覆表面的电化学测试表明具有低腐蚀电流密度和高腐蚀电位的防腐性能。本文是“绿色科学技术的仿生材料和表面”专题的一部分。
