The Ag from a AgCl melt was exchanged for alkali ions in Phoenicia (SiO2-13.25Na2O-7.64CaO-5.76mol%MgO) glass. The concentration profiles were measured by using energy-dispersive X-ray spectrometry, and the interdiffusion coefficients were thus deduced. The Ag self-diffusion coefficients were then found by extrapolating to zero Ag concentration. The results could be described by:

D (cm2/s) = 1.10 x 103 exp[-18.1(kcal/mol)/RT]

I.Fainaro, M.I.Shalom, M.Ron, S.Lipson: Physics and Chemistry of Solids, 1984, 25[1], 16-21