About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
2022 Undergraduate Student Poster Contest
|
Presentation Title |
Reactive Cold Sintering Process to Reduce theThermal Conductivity of La0.15Sr0.775
TiO3-δ |
Author(s) |
Lukas D. Glist, Stephanie Mudd, Rebecca Boston |
On-Site Speaker (Planned) |
Lukas D. Glist |
Abstract Scope |
Particle size and density in polycrystalline ceramics play a critical role in determining bulk properties. Here we aimed to take current work on cold sintering lanthanum-doped strontium titanate (LST, n-type) and increase density to above at least 95% and improve the figure of merit for use as a thermoelectric. We used an approach to cold sintering which uses a partially crystallized material as an infill phase. Through the selection of an optimal infill bake temperature, sonication of powders, and the introduction of a grown matrix phase, we were able to densify La0.15Sr0.775TiO3 at a much lower temperature than conventional solid-state sintering. |