| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
| Presentation Title |
Rheological Behavior of Heavy-Metal Oxychloride Glass-Forming Liquids |
| Author(s) |
Jacob Lovi, Bruce Aitken, Sabyasachi Sen |
| On-Site Speaker (Planned) |
Jacob Lovi |
| Abstract Scope |
Mixed-anion heavy-metal glasses based on mixtures of Sb2O3 and various metal halides (MX) are promising candidates for application in photonics, owing to their unusually high refractive index, infrared transparency, optical nonlinearity and low glass transition temperature. However, the effects of the mixed-anion network on the flow behavior and the shear-mechanical response of the parent liquids in these Sb2O3-MX systems have not yet been investigated, although a fundamental understanding of such effects is key in the optimization of the processing parameters for these glasses. We will report the results of a systematic study of the viscous flow and shear and enthalpy relaxation behavior of supercooled liquids in the ternary system Sb2O3–ZnCl2–MnCl2 utilizing a combination of parallel-plate rheometry and differential scanning calorimetry. The results will be shown to elucidate a possible connection between the unusual mixed-anionic makeup of the framework and the temperature dependence of the relaxation phenomena in these liquids. |