The Ag from a AgCl melt was exchanged for alkali ions in Corning (SiO2-12.33Na2O-9.08Al2O3-6.27mol%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) = 7.60 x 102 exp[-31.4(kcal/mol)/RT]

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