| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
Utilizing Electrical Impedance Spectroscopy (E.I.S.) to Observe In-situ Phase Changes in Lithium Diborate Glass Undergoing Thermal Relaxation |
| Author(s) |
William H. Guthrie, Caio Bragatto |
| On-Site Speaker (Planned) |
William H. Guthrie |
| Abstract Scope |
Electrochemical impedance spectroscopy (E.I.S.) is a powerful tool for analyzing the electrical and ionic properties of solid state ceramics and glasses as a function of frequency. In this work, E.I.S. was used to monitor the changes in ionic conductivity during the thermal relaxation of lithium diborate glass. Since the conductivity of a material (ó in S cm-1) is proportional to the phase’s geometric factor and inversely proportional to the sample’s resistance (1/R l/A), it becomes possible to measure the relative volume of each phase present within the sample. By repeating these tests at a regular interval while a sample is held at a high temperature below the glass transition temperature, the process of relaxation can be observed in real time. |