| People | Locations | Statistics |
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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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Januchta, Kacper
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2020Indentation cracking and deformation mechanism of sodium aluminoborosilicate glassescitations
- 2020Competitive effects of free volume, rigidity, and self-adaptivity on indentation response of silicoaluminoborate glassescitations
- 2019Revisiting the Dependence of Poisson’s Ratio on Liquid Fragility and Atomic Packing Density in Oxide Glassescitations
- 2019Structural dependence of chemical durability in modified aluminoborate glassescitations
- 2019Structural dependence of chemical durability in modified aluminoborate glassescitations
- 2019Breaking the Limit of Micro-Ductility in Oxide Glassescitations
- 2019Elasticity, hardness, and fracture toughness of sodium aluminoborosilicate glassescitations
- 2019Mechanical property optimization of a zinc borate glass by lanthanum dopingcitations
- 2018Deformation and cracking behavior of La2O3-doped oxide glasses with high Poisson's ratiocitations
Places of action
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article
Elasticity, hardness, and fracture toughness of sodium aluminoborosilicate glasses
Abstract
<p>Due to an increasing demand for oxide glasses with a better mechanical performance, there is a need to improve our understanding of the composition-structure-mechanical property relations in these brittle materials. At present, some properties such as Young's modulus can to a large extent be predicted based on the chemical composition, while others—in particular fracture-related properties—are typically optimized based on a trial-and-error approach. In this work, we study the mechanical properties of a series of 20 glasses in the quartenary Na<sub>2</sub>O–Al<sub>2</sub>O<sub>3</sub>–B<sub>2</sub>O<sub>3</sub>–SiO<sub>2</sub> system with fixed soda content, thus accessing different structural domains. Ultrasonic echography is used to determine the elastic moduli and Poisson's ratio, while Vickers indentation is used to determine hardness. Furthermore, the single-edge precracked beam method is used to estimate the fracture toughness (K<sub>Ic</sub>) for some compositions of interest. The compositional evolutions of Vickers hardness and Young's modulus are in good agreement with those predicted from models based on bond constraint density and strength. Although there is a larger deviation, the overall compositional trend in K<sub>Ic</sub> can also be predicted by a model based on the strength of the bonds assumed to be involved in the fracture process.</p>