Aqueous corrosion of a commercial float glass studied by surface spectroscopies and nanoindentation

作者：Soares Paulo^*; Michel Milton D; Mikowski Alexandre; Foerster Carlos E; Lepienski Carlos M

来源：Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B, 2011, 52(1): 25-30.

The aim of this work was to understand the influence of tin on the chemical modification and therefore, on the mechanical properties of a commercial float glass surface subjected to aqueous corrosion. The corrosion mechanism is influenced by the presence of tin which affects the formation of a hydrated layer on the glass surface and consequently, its hardness. Samples of a commercial float glass were submitted to a static aqueous corrosion at 80 degrees C for several days, and analyzed by nanoindentation, Rutherford backscattering spectroscopy (RBS), elastic recoil detection analysis (ERDA), and x-ray photoelectron spectroscopy (XPS). The RBS and XPS results revealed a significant depletion in the tin content with corrosion time, at the same time that there is an incorporation of hydrogen as observed by ERDA. The hydrated layer is typically about 200 nm thick and leads to a hardness decrease, and this decrease was more pronounced for the surface that was not in contact with tin during the float process.

• 出版日期2011-2