Electrodeposition and dissolution of Sn-Zn alloy films on glassy carbon

摘要

Cyclic voltammetric studies were carried in mixtures of SnSO_4 and ZnSO_4 containing sodium gluconate in the pH range 6 to 8 at 30° and 60°C. The stannous gluconate ions hinder the deposition of zinc while zinc gluconate ions favour the tin deposition in Sn-Zn alloy formation. This formation of Sn-Zn alloy film is a regular type of alloy deposition. Stripping voltammetric curves revealed the likely presence of zinc-rich tin intermediate phases in the Sn-Zn alloy films.