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

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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 micro-hardness 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.

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Authors and Affiliations

  1. Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, P.M.B. X680, Pretoria, South Africa

    O. S. I. Fayomi & A. P. I. Popoola

  2. Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria

    O. S. I. Fayomi & T. Adekeye

  3. Department of Metallurgical and Foundry Engineering, Federal Polytechnic Idah, Idah, Kogi State, Nigeria

    A. Oheiza

Authors
  1. O. S. I. Fayomi
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  2. A. P. I. Popoola
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  3. A. Oheiza
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  4. T. Adekeye
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Correspondence to O. S. I. Fayomi.

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Fayomi, O.S.I., Popoola, A.P.I., Oheiza, A. et al. Microstructure, tribological and mechanical strengthening effect of multiphase Zn/ZrO2-SiC electrodeposited composite coatings. Int J Adv Manuf Technol 80, 1489–1495 (2015). https://doi.org/10.1007/s00170-015-7129-8

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  • DOI: https://doi.org/10.1007/s00170-015-7129-8

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