Raman Spectroscopy Investigations Of Glass Defects

This work is based on investigations of aluminium oxide containing lead glasses. The aim was to decrease costs in the production of lead glass by addition of alkalis other than potassium and soda. Feldspar and nepheline from different sources were employed. During the melting process inhomogeneities, cords, knots and blisters arise, the origin of which could be detected by means of Raman spectroscopic measurement on the glasses. This could also be achieved for very tiny inclusions, where other methods such as light microscopy fail.