| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPU-8: Nanocrystalline Thermoelectric Materials Synthesis |
| Author(s) |
Metri A. Zughbi, Kevin Anderson, Boris Feygelson, James Wollmershauser, Benjamin Greenberg |
| On-Site Speaker (Planned) |
Metri A. Zughbi |
| Abstract Scope |
Thermoelectric materials offer a promising avenue for efficient heat recovery in high-temperature environments, and optimizing their performance is key for effective applications in waste heat recovery. This work aimed to develop high-efficiency, high-temperature SiGe thermoelectric materials. The focus was on enhancing thermoelectric efficiency by maximizing electrical conductivity and minimizing thermal conductivity through nanostructuring and doping optimization.
The study employed environmentally-controlled, high-energy ball milling to fabricate SiGe nanopowders via simultaneous alloying and grain size reduction. Boron doping was incorporated during the alloying process to further optimize electrical properties.
Nanopowders were characterized through X-ray diffraction (XRD). Thermal properties of bulk specimens including thermal diffusivity and heat capacity were measured using laser flash analysis (LFA), while electrical conductivity and Seebeck coefficient were measured with a thermoelectric characterization instrument. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Powder Materials, Nanotechnology, Electronic Materials |