A stable superamphiphobic Zn coating with self-cleaning property on steel surface fabricated via a deposition method

摘要

The wettability of metal surface has been the subject of the intensive research because of its potential applications in many fields. In this paper, a superamphiphobic Zn coating has been fabricated on X90 pipeline steel substrate via a facile composite method including electrodeposition and chemical modification. The contact angles of water and glycerol on such superamphiphobic Zn coating were up to 155.29 degrees and 153.76, respectively, and the sliding angles were separate about 3 and 5, demonstrating excellent superamphiphobic property. Moreover, the wettability of the Zn coating in terms of water and glycerol contact angles was closely related to the micro-nano structures with grooves and the chemical composition with fluorinated chain. Besides, the fine structure of the Zn coating was achieved by adjusting the experimental parameters including the deposition time of electrodeposition and the time of chemical modification, and the effect of the parameters on the wettability of the coating was also investigated. Furthermore, the as-prepared superamphiphobic Zn coating showed excellent self-cleaning property and high durability in atmospheric environment for 6 months. The simple method for fabricating such stable superamphiphobic coating can be easily extended to other metals and alloys. (C) 2016 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.