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Trends in Effective Diffusion Coefficients for Ion-Exchange Strengthening of Soda-Lime-Silicate Glasses
RISE Res Inst Sweden;Friedrich Schiller Univ Jena, Germany.
Friedrich Schiller Univ Jena, Germany.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. Corning Inc, USA. (Glass Grp)
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Glass Grp)
2017 (English)In: Frontiers in materials, ISSN 2296-8016, Vol. 4, article id UNSP 13Article in journal (Refereed) Published
Abstract [en]

Monovalent cations enable efficient ion-exchange processes due to their high mobility in silicate glasses. Numerous properties can be modified in this way, e.g., mechanical, optical, electrical, or chemical performance. In particular, alkali cation exchange has received significant attention, primarily with respect to introducing compressive stress into the surface region of a glass, which increases mechanical durability. However, most of the present applications rely on specifically tailored matrix compositions in which the cation mobility is enhanced. This largely excludes the major area of soda-lime-silicates (SLS) such as are commodity in almost all large-scale applications of glasses. Basic understanding of the relations between structural parameters and the effective diffusion coefficients may help to improve ion-exchanged SLS glass products, on the one hand in terms of obtainable strength and on the other in terms of cost. In the present paper, we discuss the trends in the effective diffusion coefficients when exchanging Na+ for various monovalent cations (K+, Cu+, Ag+, Rb+, and Cs+) by drawing relations to physicochemical properties. Correlations of effective diffusion coefficients were found for the bond dissociation energy and the electronic cation polarizability, indicating that localization and rupture of bonds are of importance for the ion-exchange rate.

Place, publisher, year, edition, pages
2017. Vol. 4, article id UNSP 13
Keyword [en]
ion exchange in glass, float glass, soda-lime-silicate, effective diffusion coefficients, bond dissociation energy, electronic cation polarizability
National Category
Materials Engineering
Research subject
Technology (byts ev till Engineering), Glass Technology
Identifiers
URN: urn:nbn:se:lnu:diva-69798DOI: 10.3389/fmats.2017.00013ISI: 000418958100002OAI: oai:DiVA.org:lnu-69798DiVA: diva2:1173533
Available from: 2018-01-12 Created: 2018-01-12 Last updated: 2018-01-31Bibliographically approved

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Ali, SharafatJonson, Bo

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