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Influence of external compressive stress on the ionic conductivity of melt-quenched lithium silicate (15Li2O-85SiO2) glass

Graczyk-Zajac, M. and Vrankovic, D. and Schader, F. H. and Fernandes, H. R. and Tulyaganov, D. U. (2017):
Influence of external compressive stress on the ionic conductivity of melt-quenched lithium silicate (15Li2O-85SiO2) glass.
In: Solid State Ionics, Elsevier, pp. 61-65, 302, ISSN 01672738,
[Online-Edition: http://doi.org/10.1016/j.ssi.2016.11.024],
[Article]

Abstract

This paper reports measurements of the electrical resistances of bulk and milled amorphous lithium silicate (15Li2O-85SiO2) under uniaxial load at 200 °C. With imposed load up to 700 MPa, the resistance of the melt-quenched glass increases from 1.56 to 1.95 MΩ cm. This change is reversible, namely after releasing the load the initial electrical resistance is recovered. Milled and compacted glass consists of the bulk and particle contacts resistances. Both of them increase when the external compression up to 200 MPa. For the bulk element, when compression is released, the initial resistance is recovered, whereas the resistance changes within the particles contacts are irreversible.

Item Type: Article
Erschienen: 2017
Creators: Graczyk-Zajac, M. and Vrankovic, D. and Schader, F. H. and Fernandes, H. R. and Tulyaganov, D. U.
Title: Influence of external compressive stress on the ionic conductivity of melt-quenched lithium silicate (15Li2O-85SiO2) glass
Language: English
Abstract:

This paper reports measurements of the electrical resistances of bulk and milled amorphous lithium silicate (15Li2O-85SiO2) under uniaxial load at 200 °C. With imposed load up to 700 MPa, the resistance of the melt-quenched glass increases from 1.56 to 1.95 MΩ cm. This change is reversible, namely after releasing the load the initial electrical resistance is recovered. Milled and compacted glass consists of the bulk and particle contacts resistances. Both of them increase when the external compression up to 200 MPa. For the bulk element, when compression is released, the initial resistance is recovered, whereas the resistance changes within the particles contacts are irreversible.

Journal or Publication Title: Solid State Ionics
Volume: 302
Publisher: Elsevier
Uncontrolled Keywords: Ionic conductivity, Compressive stress, Amorphous 15Li2O-85SiO2
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 17 Mar 2017 09:25
Official URL: http://doi.org/10.1016/j.ssi.2016.11.024
Identification Number: doi:10.1016/j.ssi.2016.11.024
Funders: F.H.S. gratefully acknowledges financial support from the Deutsche Forschungsgemeinschaft under WE 4972/2.
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