Abstract
The morphology change on glass surface caused by localized corrosion was studied for soda lime silicate glass using an atomic force microscope (AFM). AFM observation was carried out on the glass surfaces after immersion in aqueous solutions with various pHs and for various immersion times. Observation of crack tip morphology was also made for the surface of soda lime silicate glass after indentation. It is shown that surface roughness does not change in the pH range from 1.0 to 10.2, and abruptly increases at a pH 11.7, increases with increasing the immersion time. Stress corrosion around the crack tip was observed at pH 11.7, but not at pH 2.0. XPS results proved that the morphology change on glass surface caused by localized corrosion arises from the sorption of K+ ion existing in the test solution.
