| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications VIII
|
| Presentation Title |
Laser Additive Manufacturing of Bismuth Telluride and Silicide Thermoelectric Materials |
| Author(s) |
Saniya Leblanc, Haidong Zhang, Ryan Welch, George Nolas, Yohann Thimont |
| On-Site Speaker (Planned) |
Saniya Leblanc |
| Abstract Scope |
Traditional thermoelectric device manufacturing uses bulk material processing with machining, assembly, and integration steps which lead to material waste and performance limitations. This approach offers virtually no flexibility in designing the geometry of thermoelectric modules. Additive manufacturing can overcome these challenges. This talk will describe our progress in laser-based additive manufacturing of tellurides and silicides. Laser powder bed fusion (selective laser melting) is an additive process which locally melts successive layers of material powder to construct 3D objects. Applied to thermoelectric materials, this technique could enable new geometries and architectures, nano- to meso-scale structuring, and material-to-device integration. We will discuss the impact of laser processing on microstructure and phase, and we characterize the key thermoelectric properties (Seebeck coefficient, electrical resistivity, thermal conductivity) as a function of temperature for parts made via laser additive manufacturing. Finally, we demonstrate the impact novel geometries can have on thermoelectric device performance using multiphysics modeling. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |