| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Bockowski, Michal
Institute of High Pressure Physics
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Explaining an anomalous pressure dependence of shear modulus in germanate glasses based on Reverse Monte Carlo modelling
- 2024Explaining an anomalous pressure dependence of shear modulus in germanate glasses based on Reverse Monte Carlo modelling
- 2024History matters for glass structure and mechanical properties
- 2023Evolution of the Growth Mode and Its Consequences during Bulk Crystallization of GaNcitations
- 2022Novel High-Pressure Nanocomposites for Cathode Materials in Sodium Batteriescitations
- 2022Thermal conduction in a densified oxide glasscitations
- 2022Thermal conduction in a densified oxide glass:Insights from lattice dynamicscitations
- 2021Vibrational disorder and densification-induced homogenization of local elasticity in silicate glassescitations
- 2021Thermal conductivity of densified borosilicate glassescitations
- 2021Indentation Response of Calcium Aluminoborosilicate Glasses Subjected to Humid Aging and Hot Compressioncitations
- 2021Volume relaxation in a borosilicate glass hot compressed by three different methodscitations
- 2020Composition and pressure effects on the structure, elastic properties and hardness of aluminoborosilicate glasscitations
- 2020Achieving ultrahigh crack resistance in glass through humid agingcitations
- 2020Volume relaxation in a borosilicate glass hot compressed by three different methodscitations
- 2019Luminescence behaviour of Eu 3+ in hot-compressed silicate glassescitations
- 2019Revisiting the Dependence of Poisson’s Ratio on Liquid Fragility and Atomic Packing Density in Oxide Glassescitations
- 2019(Invited) Advances in Ion Implantation of GaN and AlN
- 2018Deformation and cracking behavior of La2O3-doped oxide glasses with high Poisson's ratiocitations
- 2017Thermal Conductivity of Foam Glasses Prepared using High Pressure Sintering
- 2017Foaming Glass Using High Pressure Sintering
- 2016Structure and mechanical properties of compressed sodium aluminosilicate glassescitations
- 2014Pressure-Induced Changes in Inter-Diffusivity and Compressive Stress in Chemically Strengthened Glass
Places of action
| Organizations | Location | People |
|---|
article
Deformation and cracking behavior of La2O3-doped oxide glasses with high Poisson's ratio
Abstract
<p>Oxide glasses pose high theoretical strength originating from their strong ionocovalent bonding, but they experience amplification of tensile stresses around defects under tensile loading and lack efficient stress dissipation mechanisms. Consequently, glasses exhibit low practical strength and fracture toughness, limiting the scope of their applications. Different strengthening and reinforcement approaches have thus been tested, but relatively little success has been achieved with respect to making the glasses intrinsically more ductile through composition optimization. Following earlier literature reports, a possible route to achieve this would be to prepare glasses with high Poisson's ratio above ~0.32. Yet, no oxide glasses with such high Poisson's ratio have been reported and the mechanical properties of oxide glasses with Poisson's ratio ≥ 0.30 are poorly understood. In this paper, we synthesize 25%La<sub>2</sub>O<sub>3</sub>–15%Al<sub>2</sub>O<sub>3</sub>–60%B<sub>2</sub>O<sub>3</sub>, 25%La<sub>2</sub>O<sub>3</sub>–15%Al<sub>2</sub>O<sub>3</sub>–60%SiO<sub>2</sub>, and 25%La<sub>2</sub>O<sub>3</sub>–15%Al<sub>2</sub>O<sub>3</sub>–60%GeO<sub>2</sub> glasses (fractions in mol%), all exhibiting high Poisson's ratio values (~0.30). We evaluate the mechanical properties, including elastic moduli, Poisson's ratio, hardness, and resistance to indentation cracking of the as-prepared as well as densified glasses. In addition, the indentation deformation mechanism of the glasses along with the accompanying underlying structural changes is investigated. This study therefore presents insight into the composition-property relations of high Poisson's ratio glasses, which may be used in future design of ductile oxide glasses with potential applications in electronic devices, optical fibers, and load-bearing components of buildings or other constructions.</p>