Quantitative evaluation of stress-enhanced corrosion on glass surface using vickers indentation method(part 2)----effect of metal ions in aqueous solutions

摘要

Crack growth measurement was performed in order to study the effectof pH of solution and the amount/nature of dissolved metal ionson stress-enhanced corrosion of glass. The testing conditions weresystematically changed from the viewpoint of surface chemistry.The data of stress corrosion limit, Kscc, can be described in termsof pH of solution. The presence of metal ions dissolved in thesolution at a specific pH suppressed the stress-enhanced corrosion.At this specific pH metal ions react with the glass surface. Itwas also found that the same effect was promoted at a constant pHwhen the concentration of metal ion increased. These resultsdemonstrate that, although a complicated relation exists betweenconcentration and nature of dissolved metal ions, crack growth datacan be rationalized by taking the pH of solution as the parameterhaving the predominant effect.