Projects per year
Abstract
Glass-ceramics feature excellent mechanical properties but tend to lack transparency due to the presence of large crystals with a different refractive index from the matrix glass. Here, we investigate the relationship between the heterogeneous microstructure, mechanical properties (hardness, crack resistance, and fracture toughness), and transparency in Na2O-P2O5-SiO2 glass-ceramics. The mechanical properties are determined by the combination of crystal type, content, and size, as well as the remaining glass-matrix structure. The crystal fraction and size increase upon heat treatment, whereas the network connectivity of the residual glass-matrix phase decreases. These observed changes have opposite effects on crack resistance and fracture toughness. Changes in crystallization behavior have a more significant effect on crack resistance relative to that on fracture toughness, while changes in crystal size have a more pronounced effect on fracture toughness. The glass-ceramic samples feature excellent transmittance and reach a maximum fracture toughness of 1.1MPam0.5.
Original language | English |
---|---|
Article number | 063606 |
Journal | Physical Review Materials |
Volume | 7 |
Issue number | 6 |
ISSN | 2476-0455 |
DOIs | |
Publication status | Published - 30 Jun 2023 |
Fingerprint
Dive into the research topics of 'Mechanical properties of transparent sodium phosphosilicate glass-ceramics'. Together they form a unique fingerprint.Projects
- 1 Finished
-
GLASSphase: Toward Tough Glasses with Controlled Nanoscale Heterogeneities
Smedskjær, M. M. (PI) & Zhang, Q. (Project Participant)
01/10/2020 → 30/09/2022
Project: Research