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Comparative Anticorrosion Performance of Electrochemically Produced Zn–NiO and Zn–NiO–ZrO2 Composite Coatings on Mild Steel

  • K. Deepa
  • T. V. VenkateshaEmail author
Article
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Abstract

Zinc composite coatings of Zn–NiO and Zn–NiO–ZrO2 were produced by electrodeposition on mild steel using a Zn-sulphate bath. The homogeneous dispersion of the metal oxide nanoparticles for composite coating was achieved by magnetic stirring of the bath solution for about 6 h. The surface characteristics were examined by scanning electron microscopy supported by energy dispersive spectroscopy. The hydrophobic nature of the deposits has been determined by contact angle images of the deposits. The comparative corrosion resistive property of Zn, Zn–NiO and Zn–NiO–ZrO2 deposits was investigated by using a corrosion medium of 3.65% NaCl solution. The corrosion resistance performance of the coatings was analyzed by the Tafel polarization and electrochemical impedance spectroscopy.

Keywords:

Zn-composite coating electroplating scanning electron microscopy Tafel electrochemical impedance spectroscopy 

Notes

ACKNOWLEDGMENTS

The authors thank the Department of Chemistry, Kuvempu University, Jnana Sahyadri, Karnataka, India, for providing lab facilities to finish the present work.

FUNDING

The authors acknowledge the support of UGC-New Delhi, Government of India, for providing UGC-BSR Fellowship (Order no. F, 25-1/2013-14(BSR) 7-229/2009).

CONFLICT OF INTEREST

The authors declare that they have no conflict of interest.

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Copyright information

© Allerton Press, Inc. 2019

Authors and Affiliations

  1. 1.Department of Studies in Chemistry, School of Chemical Sciences, Kuvempu UniversityShimogaIndia

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