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Kinetics of chemical strengthening and trends in effective diffusion coefficients
RISE - Research Institutes of Sweden, Built Environment, Building Technology. (Glass)ORCID iD: 0000-0003-2160-6979
University of Jena, Germany.ORCID iD: 0000-0002-0747-3076
Linnaeus University, Sweden. (Glass)ORCID iD: 0000-0003-1430-2862
Linnaeus University, Sweden. (Glass)
2019 (English)Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

Alkali cation exchange has received significant attention with respect to introducing compressive stress in the glass surface, a process frequently called chemical strengthening. Besides mechanical properties may also other properties such as optical, electrical and chemical properties be modified using ion exchange of various monovalent ions. The mobility of monovalent ions varies and the relations of structural and effective diffusion coefficients may help to understand how to improve the ion exchange kinetics of soda lime silicates. We discuss the trends in the effective diffusion coefficients when exchanging Na+ for various monovalent cations (K+, Cu+, Ag+, Rb+ and Cs+) by their correlations to physico-chemical properties. The most significant correlations were found to be the bond dissociation energy and the electronic cation polarizability, indicating that electron localization and the rupture of bonds are of importance for the ion exchange rate.

Place, publisher, year, edition, pages
2019.
Keywords [en]
ion exchange, glass, chemical strengthening, kinetics, bond dissociation energy, polarizability
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-39046OAI: oai:DiVA.org:ri-39046DiVA, id: diva2:1325798
Conference
25th International Congress on Glass (ICG 2019)
Projects
Thinner and stronger glass for sustainable production and consumption
Funder
Swedish Research Council Formas, 2018-00707Vinnova, 2013-04343EU, FP7, Seventh Framework Programme, GROWTH 291795Available from: 2019-06-17 Created: 2019-06-17 Last updated: 2019-06-20Bibliographically approved

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ICG 2019 - Book of Abstracts

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Karlsson, Stefan

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CiteExportLink to record
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