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Tribo-Mechanical Investigation and Anti-Corrosion Properties of Zn-TiO2 Thin Film Composite Coatings from Electrolytic Chloride Bath.

Fayomi, O. S. I and Popoola, A. P. I. and Loto, C. A. (2014) Tribo-Mechanical Investigation and Anti-Corrosion Properties of Zn-TiO2 Thin Film Composite Coatings from Electrolytic Chloride Bath. International Journal of ELECTROCHEMICAL SCIENCE, 9. pp. 3885-3903.

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Abstract

Zn-TiO2 (Zn-Ti) composite films were produced on mild steel substrate by electro-deposition from zinc based chloride solutions. The thin film coating was investigated using scanning electron microscopy coupled with energy dispersive spectroscopy (SEM/EDS), x-ray diffraction and atomic force microscopy (AFM). The anti-corrosion behaviour in 3.65% NaCl medium were studied using potentiodynamic polarization technique and characterized by high resolution optical microscope (HR-OPM). The wear and the hardness properties of the composite coatings were measure with high diamond microhardness tester and reciprocating sliding tester respectively. Experimental results show that co-deposited TiO2 particle provides new orientation of metal matrix and modified the surface structure which contributed maximally to the increase in hardness and wear resistance. More so, increase in anti-corrosion property of all the deposits fabricated is attributed to the formation of new phases, surface homogeneity of the developed coating and the thin oxide films of Ti.

Item Type: Article
Uncontrolled Keywords: Zn-Ti, composite coatings, thin films, tribology, corrosion
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 05 Apr 2018 12:57
Last Modified: 05 Apr 2018 12:57
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/10553

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