| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
The Dissolution of Lithium Disilicate Glass under Ultrasonic Cavitation |
| Author(s) |
Ben Dillinger, Carlos Suchicital, David Clark |
| On-Site Speaker (Planned) |
Ben Dillinger |
| Abstract Scope |
There has been little research conducted on how ultrasonication may affect glass dissolution. The focus of this study was to examine how the mechanisms and kinetics of glass dissolution may change in a system under ultrasonication. Experiments were conducted on lithium disilicate glass in deionized water for between 1 and 7.5 hours at 50°C. Results indicated that the kinetics of glass dissolution were affected by erosion caused by cavitation created during ultrasonication. Samples with macroscopically visible erosion had ~2-3x more dissolution compared to samples without erosion. The change in dissolution was thought to be due to two processes. First, the erosion caused the surface area of the sample to volume of solution (SA/V) ratio to increase through the roughening of the surface and the release of particulates into solution. Second, the depleted layer was removed at a faster rate under ultrasonication than would normally be possible under static conditions. |