Corrosion Modeling Of Simple Glasses From The Systems Si02-Na20-Cao And Si02-Na20-Mg0

Static corrosion tests were conducted on two model glasses with the following composition (in mol%) 75 SiO2, 15 Na2O, 10 CaO and 75 SiO2, 15 Na2O, 10 MgO. The tests were performed in deionized water at 80 deg C. Glass grains were combined with a monolithic sample in one reaction vessel to achieve sufficient elemental release and to provide a monolithic sample for analysis. Vapor hydration tests (VHT) were performed on monolithic samples at 200 deg C. Solution composition was analysed with atomic absorption spectrometry (AAS), depth profiles of all elements in the surface layers of monolithic samples were analysed with secondary neutral dispersive spectrometry SEM/EDS).