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Compositional Effects on Indentation Mechanical Properties of Chemically Strengthened $TiO_{2}$-Doped Soda Lime Silicate Glasses
| Content Provider | MDPI |
|---|---|
| Author | Karlsson, Stefan |
| Copyright Year | 2022 |
| Description | $TiO_{2}$ is an important oxide for property modifications in the conventional soda lime silicate glass family. It offers interesting optical and mechanical properties, for instance, by substituting heavy metals such as lead in consumer glasses. The compositional effects on the hardness, reduced elastic modulus and crack resistance as determined by indentation of chemically strengthened (CS) $TiO_{2}$-doped soda lime silicate glass was studied in the current paper. The CS, which was performed by a $K^{+}$ for $Na^{+}$ ion exchange in a molten $KNO_{3}$ salt bath at 450 °C for 15 h, yielded significant changes in the indentation mechanical properties. The hardness of the glass samples increased, and this was notably dependent on the $SiO_{2}$, CaO and $TiO_{2}$ content. The reduced elastic modulus was less affected by the CS but showed decrease for most samples. The crack resistance, an important property in many applications where glasses are subjected to contact damage, showed very different behaviors among the series. Only one of the series did significantly improve the crack resistance where low CaO content, high $TiO_{2}$ content, high molar volume and increased elastic deformation favored an increased crack resistance. |
| Starting Page | 577 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma15020577 |
| Journal | Materials |
| Issue Number | 2 |
| Volume Number | 15 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-13 |
| Access Restriction | Open |
| Subject Keyword | Materials Glass Chemical Strengthening Ion Exchange Nano-indentation Micro-indentation Mechanical Properties |
| Content Type | Text |
| Resource Type | Article |
