J. Torrent-Burgués,* E. Guaus
Dep. Enginyeria Química, Univ. Politècnica de Catalunya, C/ Colom 1, 08222-Terrassa, Barcelona, Spain.
Abstract
The electrodeposition of tin in presence of tartrate ions has been analysed by electrochemical techniques, mainly chronoamperometry, and by scanning electron microscopy (SEM). The obtained values of nucleus density with both techniques have been compared and discussed. The electrodeposition process follows an instantaneous nucleation with 3D growth under diffusion control at the initial times of the process, but a second nucleation process occurs at higher times. The influence of tartrate and of agitation conditions is also inferred from the crystal morphology.
Keywords: tartrate solution, tin electrodeposition, SEM, nucleus density.
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* Corresponding author. E-mail address: juan.torrent@upc.edu
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