Electrodeposition of tin-lead alloy on a rotating disk electrode in methane sulphonic acid solutions

[[abstract]]©1998 METALFINISHING - The electrodeposition of tin, lead, and tin-lead alloys in methane sulphonic acid (MSA) solutions with stationary and rotating disk electrodes was studied in this paper. The measurements of polarization curves were performed in MSA solutions containing tin, lead or both. Results from kinetic studies indicate that the reductions of tin and lead in MSA plating bath proceed in parallel without interaction. From a system with mixed activation-and-diffusion control, lead was found to be the dominant species in both activation and diffusion controlled processes due to its higher exchange current density and diffusion coefficient.[[department]]化學工程