| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
3D Ink-Extrusion Printing of La3Te4 Thermoelectric Legs with Complex Geometries |
| Author(s) |
Alexander Proschel, Yunjia Zhang, Araseli Cortez, Jeffery G. Snyder, David C. Dunand |
| On-Site Speaker (Planned) |
Alexander Proschel |
| Abstract Scope |
Thermoelectric (TE) La3Te4 is one of the best performing n-type high temperature TEs but traditional synthesis techniques and intrinsic brittleness restrict TE leg design to cuboidal shapes fabricated by slicing larger ingots. Implementation of a 3D-ink extrusion manufacturing procedure would enable geometrical freedom and continuous processing with minimal loss of expensive TE material caused by traditional slicing while avoiding complications such as Te evaporation and cracking present in laser-based additive manufacturing processes. Here we present a 3D-ink extrusion process for synthesizing La3Te4 utilizing elemental powders and a polymer-based ink which can be printed at ambient temperature into complex geometries. Subsequent heat treatments decompose polymer binder and sinter powders to form densified, high purity La3Te4 enabling cheaper and better performing TE devices for deep space and power generation applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Other, |