Dependence of the hydrogen permeability of glasses on thermal expansion and the structure connectedness factor

Abstract

All glass properties are dependent by their structure. It was established that hydrogen permeation, characterized by lgKH as one of properties, is determined on the factor of glass network connectedness and the thermal expansion coefficient, which confirm the existing of free structure volume. Equations have been obtained for calculation of 1gKH. They may be applied for predicting the changes in hydrogen permeability as a function of the indicated criterions.