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Super-Hydrophobic Co–Ni Coating with High Abrasion Resistance Prepared by Electrodeposition

1,*,†, 1,†, 1, 2 and 1,*
1
National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China
2
Shandong Provincial Key Laboratory for High Strength Lightweight Metallic Materials, Advanced Materials Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250000, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Coatings 2019, 9(4), 232; https://doi.org/10.3390/coatings9040232
Received: 19 February 2019 / Revised: 23 March 2019 / Accepted: 29 March 2019 / Published: 2 April 2019
(This article belongs to the Special Issue Superhydrophobic Coatings for Corrosion and Tribology)
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Abstract

Although super-hydrophobic surfaces have great application prospects in industry, their preparation cost and mechanical durability have limited their practical utilization. In this work, we presented a new low-cost process preparation for super-hydrophobic Co–Ni coating on carbon steel substrate via an electrodeposition route. The deposited Co–Ni coating with cauliflower-shaped micro-nano structures exhibited high super-hydrophobic properties with water contact angles over 161° after modification with 1H,1H,2H,2H-Perfluorooctyltrichlorosilane (PFTEOS). Evaluated by the linear abrasion methods, the super-hydrophobic coating can maintain super-hydrophobicity after abrasion distance of 12 m under the applied pressure of 5 kPa, which was attributed to the high cobalt content of the Co–Ni coating. Moreover, electrochemical tests showed that the super-hydrophobic Co–Ni coatings exhibited a good anti-corrosion performance thus providing an adequate protection to the carbon steel substrates. View Full-Text
Keywords: electrochemical deposition; Co–Ni coating; super-hydrophobic surface; mechanical durability; corrosion protection electrochemical deposition; Co–Ni coating; super-hydrophobic surface; mechanical durability; corrosion protection
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Xue, Y.; Wang, S.; Bi, P.; Zhao, G.; Jin, Y. Super-Hydrophobic Co–Ni Coating with High Abrasion Resistance Prepared by Electrodeposition. Coatings 2019, 9, 232.

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