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Materials 2017, 10(6), 628; doi:10.3390/ma10060628

Preparation of Superhydrophobic Film on Ti Substrate and Its Anticorrosion Property

1
Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China
2
School of Mechanical Engineering & Automation, Zhejiang Sci-Tech University, Hangzhou 310018, China
3
Faculty of International Maritime Studies, Kasetsart University, Sriracha Campus, 199 Tungsukla, Sriracha, Chonburi 20230, Thailand
*
Authors to whom correspondence should be addressed.
Academic Editor: Yong-Cheng Lin
Received: 28 April 2017 / Revised: 30 May 2017 / Accepted: 31 May 2017 / Published: 8 June 2017
(This article belongs to the Section Biomaterials)
View Full-Text   |   Download PDF [3670 KB, uploaded 8 June 2017]   |  

Abstract

Superhydrophobic films were fabricated on a titanium substrate with or without anodizing by using a self-assembling method. Firstly, the pretreatments of mechanical polishing/anodizing or mechanical polishing only were conducted, respectively. Subsequently, the preparation of polydopamine film layer, deposition of nano-silver particles, and post modification of 1H,1H,2H,2H-perfluorodecanethiol were performed on the surface of the pretreated substrate. The surface morphologies, compositions, wettability, and corrosion resistance of the films were investigated with scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), water contact angle measurements, and electrochemical tests, respectively. Meanwhile, the effect of the deposition time in the silver nitrate solution on the hydrophobicity of the specimen surface was investigated. The result showed that with the increase of deposition time, the hydrophobic property enhanced gradually. The surface deposited for 7 h exhibited an optimum hydrophobic effect, which was characterized with a large water contact angle (WCA) of 154°, and the surface was rather rough and covered by a relatively uniform layer of micro-nano silver particles. The excellent hydrophobicity was attributed to a rough stratified microstructure along with the low surface energy. The electrochemical measurements showed that the existence of the superhydrophobic film can effectively enhance the corrosion resistance of Ti samples. View Full-Text
Keywords: superhydrophobic film; titanium; microstructure; surface superhydrophobic film; titanium; microstructure; surface
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhu, M.; Tang, W.; Huang, L.; Zhang, D.; Du, C.; Yu, G.; Chen, M.; Chowwanonthapunya, T. Preparation of Superhydrophobic Film on Ti Substrate and Its Anticorrosion Property. Materials 2017, 10, 628.

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