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Open AccessArticle

Preparation and Characterization of Polydopamine-Modified Ni/Carbon Nanotubes Friction Composite Coating

by Ye Wang 1,2,† and Jianfeng Chen 1,*,†
1
School of Mechanical Engineering, Nanchang University, Nanchang 330031, China
2
USTC Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei 230026, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Coatings 2019, 9(10), 596; https://doi.org/10.3390/coatings9100596
Received: 28 August 2019 / Revised: 12 September 2019 / Accepted: 12 September 2019 / Published: 20 September 2019
(This article belongs to the Section Surface Characterization, Deposition and Modification)
In this paper, dopamine (DA) was used for the surface modification of carbon nanotubes (CNTs) to solve the agglomeration problem. High resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) were utilized to understand the morphology and presence of different elements in the modified CNTs. The treated CNT surfaces were wrapped by a pDA layer and the layer thickness was controlled by reaction time. The dispersion test showed that the treated CNTs remained uniformly dispersed in solution for more than 30 days. The Ni/[email protected] composite coating on the mild steel specimen was obtained by the electrodeposition technique. Ball-on-disc friction-wear equipment and an electrochemical workstation were used to test the friction-wear and corrosion resistance of the composite coating. The results indicated that the Ni/[email protected] coating showed excellent tribological performance and were superior to the pure Ni coating. View Full-Text
Keywords: carbon nanotubes; dopamine; surface modification; composite coating; friction-wear; corrosion resistance carbon nanotubes; dopamine; surface modification; composite coating; friction-wear; corrosion resistance
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MDPI and ACS Style

Wang, Y.; Chen, J. Preparation and Characterization of Polydopamine-Modified Ni/Carbon Nanotubes Friction Composite Coating. Coatings 2019, 9, 596.

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