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Effect of copper (II) acetate pretreatment on zinc phosphate coating morphology and corrosion resistance

Journal of Coatings Technology and Research volume 10, pages 133–139 (2013)Cite this article

Abstract

Zinc phosphate coating is widely used for corrosion protection of metallic materials, mainly mild steel. In the present study, the effect of pretreatment with copper acetate solution on zinc phosphate layer properties was investigated via scanning electron microscopy, energy-dispersive spectroscopy, and X-ray diffraction. The corrosion resistance of the coating was evaluated using polarization curves and electrochemical impedance spectroscopy in an aerated 3.5% NaCl solution. The pretreatment resulted in a compact and uniform phosphate coating with smaller crystal size and greater surface coverage. Electrochemical results showed better corrosion resistance for the pretreated phosphate layer compared with the untreated one.

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Acknowledgments

The authors would like to thank for their support the Universiti Sains Malaysia (Incentive Research grant number 1001/PBAHAN/8044002) and the University of Omar Al-mukhtar, Libya.

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Authors and Affiliations

  1. School of Material and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, 14300, Nibong Tebal, Pulau Penang, Malaysia

    Khalid Abdalla, Azmi Rahmat & A. Azizan

  2. Faculty of Engineering, Omar Almukhtar University, Al-Bayda, Libya

    Khalid Abdalla

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  1. Khalid Abdalla
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  2. Azmi Rahmat
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  3. A. Azizan
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Correspondence to A. Azizan.

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Abdalla, K., Rahmat, A. & Azizan, A. Effect of copper (II) acetate pretreatment on zinc phosphate coating morphology and corrosion resistance. J Coat Technol Res 10, 133–139 (2013). https://doi.org/10.1007/s11998-012-9423-9

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  • DOI: https://doi.org/10.1007/s11998-012-9423-9

Keywords

  • Zinc phosphate
  • Copper acetate
  • Corrosion resistance
  • Mild steel