Microprobe analysis of the corroded surface of a silicate glass

Abstract A soda lime silicate sheet glass was corroded in acid (pH = 0) and alkaline (pH = 11) aqueous solutions at 30±1° C for various lengths of time. The concentration profile of CaO and $ SiO_{2} $ within the leached layer was estimated with electron microprobe analysis. Formation of a silica ri...
Ausführliche Beschreibung

Abstract A soda lime silicate sheet glass was corroded in acid (pH = 0) and alkaline (pH = 11) aqueous solutions at 30±1° C for various lengths of time. The concentration profile of CaO and $ SiO_{2} $ within the leached layer was estimated with electron microprobe analysis. Formation of a silica rich layer at a depth of about 10 μm from the bare surface followed by a calcium rich-layer, which again in some cases is followed by silica rich and calcium rich layers, were observed. The number and intensity of these layers changed with the pH value of the corroding solution, and at the same pH value changed with time of leaching. Ausführliche Beschreibung