The kinetics of silver cementation from 3.0 M NaCl-0.3 M HCl solution on to rotating discs of lead and copper were examined. Comparison of the experimental data with a convective diffusion model of rate control incorporating reactant depletion indicated that the copper system behaved nearly as predicted whereas the lead system showed an enhanced rate of silver cementation under the same conditions. Optical microscopy and SEM analysis of the cement products suggests that the different silver morphologies obtained on copper and lead may be responsible for the differences in the rate behaviours.