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Zinc–cobalt alloy electrodeposition from chloride baths

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Abstract

Electrodeposition of Zn–Co alloys on iron substrate from chloride baths under galvanostatic and potentiostatic conditions were carried out. Current density, temperature and cobalt percentage in the bath were found to strongly influence the composition of the deposits and their morphology. Changes in potentials, current efficiency and partial current densities were studied. The results show that the shift in potential and in the cobalt percentage of the deposits, for a particular current density during galvanostatic electrodeposition, does not always correspond to the transition from normal to anomalous codeposition. This shift is attributed to zinc ion discharge, which passes from underpotential to thermodynamic conditions. In the range of potentials for the underpotential deposition of zinc, the electrodeposition of zinc–cobalt alloys is discussed, emphasizing the influence of the electrode potential on the composition and microstructure of the deposits.

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References

  1. A. Brenner, `Electrodeposition of alloys', vols I and II, Academic Press, New York and London (1963).

    Google Scholar 

  2. K. Higashi, H. Fukushima, T. Urokawa, T. Adaniya and K. Matsudo, J. Electrochem. Soc. 128 (1981) 2081.

    Google Scholar 

  3. L. Felloni, R. Fratesi, E. Quadrini and G. Roventi, J. Appl. Electrochem. 17 (1987) 574.

    Google Scholar 

  4. L. Felloni, R. Fratesi and G. Roventi, Proceedings of the XXII International Metals Congress, Bologna, Italy (17-19 May 1988), p. 687.

  5. H. Fukushima, T. Akiyama, K. Higashi, R. Kammel and M. Karimkhani, Metall. 42 (1988) 242.

    Google Scholar 

  6. R. Albalat, E. Gómez, C. Muller, M. Sarret, E. Vallés and J. Pregonas, J. Appl. Electrochem. 20 (1989) 529.

    Google Scholar 

  7. R. Albalat, E. Gómez, C. Muller, M. Sarret, E. Vallés and J. Pregonas, ibid. 20 (1990) 635.

    Google Scholar 

  8. R. Fratesi and G. Roventi, J. Appl. Electrochem. 22 (1992) 657.

    Google Scholar 

  9. H. Dahms and I. M. Croll, J. Electrochem. Soc. 112 (1965) 771.

    Google Scholar 

  10. J. Mindowicz, C. Capel-Boute and C. Decroly, Electrochim. Acta 10 (1965) 901.

    Google Scholar 

  11. M. Yunus, C. Capel-Boute and C. Decroly, ibid. 10 (1965) 885.

    Google Scholar 

  12. M. I. Nicol and H. I. Philip, J. Electroanal. Chem. 70 (1976) 233.

    Google Scholar 

  13. S. Swathirajan, ibid. 221 (1987) 211.

    Google Scholar 

  14. R. Fratesi and G. Roventi, Mater. Chem. Phys. 23 (1989) 529.

    Google Scholar 

  15. R. Piontelli, in `Atlas of Electrochemical Equilibria in Aqueous Solutions' (edited by M. Pourbaix), NACE, Huston, Texas (1974), p.11.

    Google Scholar 

  16. M. F. Mathias and T. W. Chapman, J. Electrochem. Soc. 134 (1987) 1408.

    Google Scholar 

  17. Idem, ibid. 137 (1990) 102.

    Google Scholar 

  18. C. Karwas and T. Hepel, J. Electrochem. Soc. 136 (1989) 1672.

    Google Scholar 

  19. M. Pushpavanam and K. Balakrishnan, J. Appl. Electrochem. 26 (1996) 283.

    Google Scholar 

  20. M. Maja, N. Penazzi, R. Fratesi and G. Roventi, J. Electrochem. Soc. 129 (1982) 2695.

    Google Scholar 

  21. M. L. Alcalá, E. Gómez and E. Vallés, J. Electroanal. Chem. 370 (1994) 73.

    Google Scholar 

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Authors and Affiliations

  1. Dipartimento di Scienze dei Materiali e della Terra, Universita` di Ancona, via Brecce Bianche, 60131, Ancona, Italy

    R. FRATESI , G. ROVENTI  & G. GIULIANI

  2. Departamento de Engenharia de Materiais, Faculdade de Engenharia Meca^nica, Universidade Estadual de Campinas, CEP 13081-970, C.P. 6122, Campinas, Sa~o Paulo, Brazil

    C. R. TOMACHUK

Authors
  1. R. FRATESI
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  2. G. ROVENTI
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  3. G. GIULIANI
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  4. C. R. TOMACHUK
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FRATESI , R., ROVENTI , G., GIULIANI , G. et al. Zinc–cobalt alloy electrodeposition from chloride baths. Journal of Applied Electrochemistry 27, 1088–1094 (1997). https://doi.org/10.1023/A:1018494828198

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  • DOI: https://doi.org/10.1023/A:1018494828198

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