Theoretical Aspects Of Chemical Attack Of Glasses By Water

Water is commonly employed in testing the chemical durability of glasses. As has been pointed out, however, the results obtained from accelerated tests, using water as the test liquid, are often misleading and bear little relation to the service behaviour of the glasses tested. As a time-temperature function, the equation may be written as log 0=b/T - C, in which form it is useful for estimating the storage or service conditions equivalent to an accelerated test or for calculating the conditions of alternate tests. Data from the literature are used in demonstrating the accuracy and usefulness of the equation.