Abstract

Profiles of the elements in the surface of hydrated soda-lime silicate and soda-lime alumino-silicate glasses were measured with a resonant nuclear reaction (hydrogen) and Rutherford backscattering. The profiles were consistent with interdiffusion of sodium and hydrogen-bearing ions. Interdiffusion in the glass without alumina was faster, presumably because it had a transformed surface layer. A small amount of preferential leaching of calcium was detected in this glass.

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