Quantitative evaluation of stress-enhanced corrosion on glass surface using vickers indentation method (Part 1) - Application to some glasses and aqueous solutions

In order to make a quantitative evaluation of stress-enhanced corrosion on glass surface in aqueous solutions, an indentation method was adopted. Usin g this technique, the stress corrosion Limit, K-SCC, was measured in three different glasses, a soda-lime silicate glass and two kinds of alumino-sili cate glasses, Influence of a surface active agent on the stress corrosion l imit of soda-lime silicate glass was also estimated using soda kaplinate ac id solution, The present results can be summarized as follows: (1) The inde ntation method can be generally used provided that a median/radial crack ca n be introduced on the glass surface, and it enables to distinguish subtle differences in the extent of the corrosion process, (2) Accurate K-SCC data can be obtained within a 3 % standard deviation. (3) By the indentation me thod the K-SCC can be estimated in small specimens or at localized parts.