Affiliation:
1. Department of Materials Science and Engineering The Pennsylvania State University University Park Pennsylvania USA
2. Department of Chemical Engineering The Pennsylvania State University University Park Pennsylvania USA
3. Science and Technology Division Corning Research and Development Corporation Corning New York USA
Abstract
AbstractThe mixed modifier effect (MME) is one of the most challenging puzzles in the field of oxide glasses, as there exists no universal quantitative theoretical model for accurately describing and predicting the nonlinear deviation of property values. In this paper, pairwise and ternary interactions are examined experimentally to understand the MME in a series of aluminosilicate glasses. By keeping the glass network former concentration constant and adjusting the molar ratios of three network modifiers (Na2O, K2O, and CaO), the MMEs in glass transition temperature (Tg), Vickers hardness (Hv), and activation energy (Ea) for aqueous dissolution for each modifier cation are investigated. We examine whether a pairwise interaction model is sufficient, or if ternary interactions also need to be included to predict the MME in these aluminosilicate glass systems. This work reveals that the pairwise model can be used to predict the MME for Tg in complex multiple‐modifier glass systems using only two‐body interaction factors. However, ternary mixed‐modifier interactions are present in other properties such as Hv and Ea.
Funder
National Science Foundation
Subject
Materials Chemistry,Ceramics and Composites
Reference28 articles.
1. Erratum: “Structure and properties of sodium aluminosilicate glasses from molecular dynamics simulations” [J. Chem. Phys. 139, 044507 (2013)]
2. QuintasA CaurantD MajérusO CharpentierT DussossoyJ‐L.Effect of the nature of alkali and alkaline‐earth oxides on the structure and crystallization of an aluminoborosilicate glass developed to immobilize highly concentrated nuclear waste solutions.International Conference Atalante 2008. Nuclear Fuel Cycles for a Sustainable Future Montpellier.2008.
3. On the origin of the mixed alkali effect on indentation in silicate glasses
4. Hardness of silicate glasses: Atomic-scale origin of the mixed modifier effect
5. Uber Den Einfluß Der Zusammensetzung Des Glases Auf Die Depressions‐ Erscheinungen Der Thermometer;Weber R;Berliner Akad Wiss,1883