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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mauro, J. C.
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Topics
Publications (10/10 displayed)
- 2022Mixed metal node effect in zeolitic imidazolate frameworkscitations
- 2019Understanding Glass through Differential Scanning Calorimetrycitations
- 2018Compositional Dependence of Solubility/Retention of Molybdenum Oxides in Aluminoborosilicate-Based Model Nuclear Waste Glassescitations
- 2014A model for phosphate glass topology considering the modifying ion sub-networkcitations
- 2014Modifier constraints in alkali ultraphosphate glassescitations
- 2014On the origin of the mixed alkali effect on indentation in silicate glassescitations
- 2012Topological Principles of Borosilicate Glass Chemistry - An Invited Talk
- 2012Structure and Properties of Compressed Borate Glasses
- 2012Hardness and crack behavior of compressed borate glasses
- 2011Topological Principles of Borosilicate Glass Chemistrycitations
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article
On the origin of the mixed alkali effect on indentation in silicate glasses
Abstract
The compositional scaling of Vickers hardness (Hv) in mixed alkali oxide glasses manifests itself as a positive deviation from linearity as a function of the network modifier/modifier ratio, with a maximum deviation at the ratio of 1:1. In this work, we investigate the link between the indentation deformation processes (elastic deformation, plastic deformation, and densification) and Hv in two mixed sodium–potassium silicate glass series. We show that the mixed alkali effect in Hv originates from the nonlinear scaling of the resistance to plastic deformation. We thus confirm a direct relation between the resistance to plastic flow and Hv in mixed modifier glasses. Furthermore, we find that the mixed alkali effect also manifests itself as a positive deviation from linearity in the compositional scaling of density for glasses with high alumina content. This trend could be linked to a compaction of the network when two types of alkali ions co-exist.