Effects Of Salts On Silicate Glass Dissolution In Water: Kinetics And Mechanisms Of Dissolution And Surface Cracking

A systematic study was carried out on the effects of neutral salts on the dissolution of silicate glasses. Two major phenomena were observed: (a) a significant increase in the dissolution rate of soda-lime-silica glass with increasing Nacl concentration in the leachant and (b) a rise in the amount of glass dissolved per day following an induction period that is shorter the higher the concentration of NaCl, apparently as a result of surface cracking and spallation. Increase in the observed dissolution rate of the glass with increasing salt concentration was found both before and after the rise.