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Journal of Applied Electrochemistry

, Volume 32, Issue 2, pp 225–230 | Cite as

Initial stages of tin electrodeposition from sulfate baths in the presence of gluconate

  • J. Torrent-Burgués
  • E. Guaus
  • F. Sanz
Article

Abstract

Tin electrodeposition in its initial stages in acid sulfate/gluconate baths was studied with varying tin and gluconate concentrations using potential-controlled electrochemical techniques. The deposit morphology was observed by scanning electron microscopy (SEM). A comparison with tin electrodeposition from acid sulfate baths in the absence of gluconate was also carried out. Use of a highly acidic bath leads to nonuniform deposits, even in the presence of gluconate; at pH 4 deposits are uniform, brilliant and suitable for finishing applications. Tin crystallites have a well defined morphology which depends on bath agitation conditions. In the absence of agitation, the crystallites have the same tetragonal shape as in a sulfate bath without gluconate.

deposit morphology gluconate nucleation sulfate bath tin electrodeposition 

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • J. Torrent-Burgués
    • 1
  • E. Guaus
    • 1
  • F. Sanz
    • 2
  1. 1.Dep. D’Enginyeria QuímicaUniv. Politècnica de CatalunyaTerrassaSpain
  2. 2.Dep. de Química FísicaUniv. de BarcelonaBarcelonaSpain

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