STUDY OF CORROSION PROCESSES IN GLASS BY A MULTITECHNIQUE APPROACH .2. INFRARED-SPECTROSCOPY

Infrared reflection absorption spectroscopy (IRRAS) was used to study surface changes associated with corrosion of glass in aqueous and acid ic solutions. Variations in the intensities and positions of the bridg ing (Si-O-Si) and nonbridging (Si-O-M) stretching vibrations are discu ssed as functions of the leaching conditions. Existence of molecular w ater in glass was discussed in terms of the measured infrared reflecta nce and transmittance spectra. Quantitative analysis of glass surfaces by infrared is possible if the values of reflection coefficients and extinction coefficients of the different absorption bands could be det ermined.