水溶液中でのガラスの応力腐食に関する界面化学的研究 (第2報)

アルカリ金属イオンの影響

抄録

Post-indentation slow crack growth in soda-lime-silica glass in various aqueous RNO₃ (R⁺; Li⁺, Na⁺, K⁺, Rb⁺) solutions was investigated in order to understand the mechanism of stress corrosion of glass. The crack growth was found to depend on both the concentration and the nature of the supporting electrolytes. The crack growth was enhanced by the change in the concentration of alkali metal ions from 10^-4-1M, and also by the nature of alkali metal ions in the order of Hofmeister series Li⁺<Na⁺<K⁺<Rb⁺ at the ion concentration of 10^-2M. These behaviors showed that the results obtained can be interpreted in terms of the molecular structure of the glass/electrolyte interface based on the charged states.