Surface alloyed phase formation at Au(100)/Cd2+ interface during electrodeposition

The formation and growth of thin alloy film at underpotentials during the e lectrodeposition of Cd on Au(100) in 50 mM H2SO4 + 1 mM CdSO4 solution was study at room temperature by in situ atomic force microscopy (EC-AFM) and p olarization experiments. It was found that the overall process at Au(100)/C d(2+-)interface can not be described by a simple function of time. Estimati on of the diffusion coefficients suggested that the relaxation processes at metal/electrolyte interface affect, the alloy formation.