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Article Dans Une Revue Surface and Coatings Technology Année : 2014

Adsorption of gelatin during electrodeposition of copper and tin-copper alloys from acid sulfate electrolyte

Résumé

An acid Cu–Sn deposition bath was developed, and copper and copper–tin coatings were electrodeposited on polycrystalline platinum. The effect of gelatin on copper and copper–tin electrodeposition from acid sulfate solutions has been investigated by a variety of electrochemical methods (voltammetric studies and electrochemical quartz crystal microbalance) as well as by morphologic technique (scanning electron microscopy). The electrochemical results have shown that the overpotential is required when gelatin is added, indicating the presence of interaction between the additive and the coating. From the results of X-ray photoelectron spectroscopy, PM-IRRAS and cyclic voltammetry, gelatin was found to react with metal ions and platinum substrate. Adsorption of gelatin on the coating and platinum substrate is shown. Gelatin adsorption seemed to inhibit the initial nucleation of the copper and copper–tin electrodeposition, allowing homogeneous and smaller crystallites. Addition of gelatin was found to have an effect on reducing copper–tin alloys. The presence of gelatin impacts the crystal size and morphology of Cu–Sn deposits.

Domaines

Chimie
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Dates et versions

hal-01275394 , version 1 (17-02-2016)

Identifiants

Citer

C. Meudre, L. Ricq, J.-Y. Hihn, V. Moutarlier, A. Monnin, et al.. Adsorption of gelatin during electrodeposition of copper and tin-copper alloys from acid sulfate electrolyte. Surface and Coatings Technology, 2014, 252, pp.93-101. ⟨10.1016/j.surfcoat.2014.04.050⟩. ⟨hal-01275394⟩
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