Journal of Applied Electrochemistry

, Volume 28, Issue 11, pp 1227–1233

Reactivity and codeposition of Co3O4 powderswith nickel in a Watts bath

  • J.-P. Bonino
  • S. Loubiere
  • A. Rousset
Article

DOI: 10.1023/A:1003425018598

Cite this article as:
Bonino, JP., Loubiere, S. & Rousset, A. Journal of Applied Electrochemistry (1998) 28: 1227. doi:10.1023/A:1003425018598

Abstract

The effect of the physico-chemical characteristics of Co3O4 powders on their reactivity in solution and their incorporation in a nickel matrix has been investigated in a Watts nickel plating bath. The results showed that the surface area of the powder present in suspension not only catalyses the adsorption or desorption phenomena occurring at the particle/solution interface but also has a significant effect on the incorporation of the particles into the nickel matrix. It has been found that the use of Co3O4 with high specific surface area (40m2g−1) significantly limits the growth rate of the electrodeposited composite coatings. Furthermore, it has been shown that the codeposition of these more reactive particles leads to significant changes in the microstructure and texture of the nickel matrix. Finally, it has been found that, according to their specific surface areas, the amount of H+, Ni2+ and Ni[B(OH)4]+ ions adsorbed on the Co3O4 oxide surfaces and the quantities of particles codeposited can vary considerably.

Co3O4 oxide particles oxide characteristics oxide reactivity pH changes adsorption-desorption phenomena composite coatings 

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • J.-P. Bonino
    • 1
  • S. Loubiere
    • 1
  • A. Rousset
    • 1
  1. 1.Laboratoire de Chimie des Matériaux Inorganiques, ESA-CNRS n°5070 Bât. 2R1Université Paul SabatierToulouse CedexFrance

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