| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
D-14: Redistribution of Na<sup>+</sup> Ions in Mixed Alkali-lime Glasses |
| Author(s) |
Jacob Kaspryk, William LaCourse |
| On-Site Speaker (Planned) |
Jacob Kaspryk |
| Abstract Scope |
The mixed alkali effect in glass has been inciting curiosity within the glass community since its discovery as the “thermometer effect” in 1883. It is known for the deviation from linearity in properties such as conductivity, diffusion, and viscosity. This effect can be prevalent in all glass systems. In this study, we made use of the mixed alkali effect in a 15(K<sub>2</sub>O + Li<sub>2</sub>O)-10CaO-75SiO<sub>2</sub> system, to allow for a redistribution of Na<sup>+</sup> ions within the bulk of the glass to migrate back to the surface of the glass after being heat treated once through an ion-exchange process. Heat treatments were accomplished above and below Tg for a comparison of the distribution of Na<sup>+</sup> ions. SEM-EDS was used to determine the effectiveness of the heat treatments. |