Fig. 3
From: Towards a unifying mechanistic model for silicate glass corrosion
Compilation of STEM(-EDX) analyses of ISG-90/90 and QBG-90/150 samples. HAADF image of SAL-glass interface of ISG sample is shown in a, revealing a dense layer between the porous SAL and glass. Superimposed are the normalized intensities of Ca (yellow), K (green) and Na (blue) as measured by STEM-EDX. Image-based size analysis of the worm-like silica spheres of the porous SAL section (marked by orange brackets) is shown in b, with results being compared to QBG sample in e. c Montage of HAADF images of QBG samples revealing a second, inner dense layer and two SAL sections with differing sphere sizes, porosity, and Ca concentrations (STEM-EDX). d, f Sphere size analysis of outer (purple brackets, d and inner SAL (blue brackets, f. Scale bars = 200 nm
