Jump to main content
Jump to site search

Issue 98, 2016, Issue in Progress
Previous Article Next Article

Improved corrosion resistance by forming multilayers over a copper surface by electrodeposition followed by a novel sol–gel coating method

Author affiliations

Abstract

Facile nickel coating on a copper surface was successfully fabricated via an electrodeposition method from nickel ammonium sulfate and then surface modification was done by subsequent immersion into the sol–gel mixture of 3-aminopropyltriethoxysilane (APTES), tetraethoxysilane (TEOS) and lauric acid (LA). The surface morphology, chemical composition and wettability were characterized by means of scanning electron microscopy (SEM), atomic force microscopy (AFM), Fourier transform infrared (FT-IR) spectroscopy and water contact angle (WCA) measurements. It was found that the Cu–Ni–Hy–LA multilayered sol–gel coated surface was hydrophobic with a contact angle 107.3°. The corrosion resistance of these coatings was evaluated by electrochemical impedance studies (EIS) and potentiodynamic polarization (PP) measurements in a 3.5% NaCl medium. The Cu–Ni–Hy–LA multilayered sol–gel coating showed enhanced corrosion resistance compared to the Cu–Ni and Cu–Ni–Hy surface. The improved corrosion resistance is mainly due to the formation of a densely packed sol–gel coating over an electrodeposited copper surface.

Graphical abstract: Improved corrosion resistance by forming multilayers over a copper surface by electrodeposition followed by a novel sol–gel coating method

Back to tab navigation

Article information


Submitted
28 Jul 2016
Accepted
17 Sep 2016
First published
06 Oct 2016

RSC Adv., 2016,6, 95396-95404
Article type
Paper

Improved corrosion resistance by forming multilayers over a copper surface by electrodeposition followed by a novel sol–gel coating method

J. Balaji and M. G. Sethuraman, RSC Adv., 2016, 6, 95396
DOI: 10.1039/C6RA19173H

Social activity

Search articles by author

Spotlight

Advertisements