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Microstructure, tribological and mechanical strengthening effect of multiphase Zn/ZrO2-SiC electrodeposited composite coatings

Fayomi, O. S. I and Popoola, A. P. I. and Oheiza, A. and Adekeye, T. (2015) Microstructure, tribological and mechanical strengthening effect of multiphase Zn/ZrO2-SiC electrodeposited composite coatings. Int J Adv Manuf Technol, 80. pp. 1489-1495.

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Abstract

In an attempt to improve the mechanical and thermal resilient properties of mild steel, Zn-ZrO2-SiC composite coating was fabricated from zinc-based sulphate electrolyte with incorporated composite particles of ZrO2/SiC at 2.0 A/cm2 for 10 min. The effects of particle on the mechanical properties were examined using scanning electron microscope attached with energy dispersion spectroscopy and atomic force microscopy. The micro-hardness and wear resistance behaviour were determined with high diamond microhardness tester and three body abrasive MTR-300 testers with dry sand rubber wheel apparatus with 5 N. The fabricated coating was thermally heated at 200 °C for 4 h to evaluate the coating stability. From the results, a modification in the microstructure and topographic orientation as a result of incorporated composite was noticed on the zinc matrix. The mechanical and thermal properties were observed to be considerably improved by the incorporation of the ZrO2/SiC weight fraction. A significant improvement in wear and hardness properties were also obtained for the multiphase embedded coatings

Item Type: Article
Uncontrolled Keywords: Microstructure . Strengthening effect .Mechanical properties . Co-deposition . Zn-ZrO2-SiC
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: 10 Nov 2017 12:13
Last Modified: 10 Nov 2017 12:13
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/9632

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