Abstract
Raman micro-spectroscopy is used to analyse the plastic behaviour of window glass (asoda-lime silicate glass) under high hydrostatic pressure and Vickers indentation.We show pressure-induced irreversible structural changes, notably an increase ofQ2 species at theexpense of Q3. For the first time, a very accurate calibration curve has been established. Local density variations of a Vickers indentedwindow glass have been characterized by micro-Raman mapping using a highspatial resolution device. The effects of glass depolymerization on indentation andhydrostatic compression are discussed. Differences between window glass and pureSiO2 glass behaviour under high stresses are also highlighted and analysed at a local scale.
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