Structural, Mechanical and Corrosion Behavior of Ni-P-TiO2 Composite Coatings: Effect of Current Density
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Date
2021-02-28
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JOURNAL OF NANO- AND ELECTRONIC PHYSICS
Abstract
Ni-P-TiO2 composite coatings are important in engineering due to their properties such as good resistance
to wear and corrosion, magnetic properties, electrical and thermal conductivity. In this paper, the
effect of current density on electrodeposited Ni-P-TiO2 composite coatings was investigated for the first
time. Ni-P-TiO2 composite coatings were deposited with applied current densities (1, 3, 5, 7 and 9 A·dm – 2)
on copper substrates. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), energy dispersive
spectroscopy (EDS) and microhardness analysis were used to study the morphological, microstructural
and mechanical properties. On the other hand, the corrosion performance of the coatings was evaluated
using Tafel polarization and electrochemical impedance spectroscopy (EIS). XRD results indicate that
the inclusion of TiO2 nanoparticles into the coatings alters the relative intensity of Ni peak as well as peak
breadth. In addition, microhardness of the coatings noticeably increased with current densities. Ni-P-TiO2
composite coating electrodeposited at 3 A·dm – 2 exhibits the best microhardness and corrosion resistance.
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Citation
3. F. LEKMINE, M. Naoun, A. Gana, H. Ben Temam, Structural, Mechanical and Corrosion Behavior of Ni-P-TiO2 Composite Coatings: Effect of Current Density, JOURNAL OF NANO- AND ELECTRONIC PHYSICS, Vol. 14No 1, 01009(5pp) (2021), DOI: 10.21272/jnep.14(1).01009