| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials for Energy Applications
|
| Presentation Title |
Peltier Effect during Spark Plasma Sintering of Boron Carbide |
| Author(s) |
Joseph Sambasene Diatta, Andrey Maximenko, Ifeanyichukwu Donald Olumor, Geuntak Lee, Eugene A. Olevsky |
| On-Site Speaker (Planned) |
Joseph Sambasene Diatta |
| Abstract Scope |
Spark plasma sintering (SPS) of thermoelectric materials showed that a significant temperature gradient can be formed between the top and bottom surfaces of the processed specimen. Resulting microstructural heterogeneity modifies the final mechanical properties of the sintered material. It is known that contacts between boron carbide specimen and graphite tooling demonstrate strong Peltier effect.
This study evaluates numerically temperature and density heterogeneities in SPS of boron carbide specimen due to Peltier and Seebeck thermoelectric effects. An electro-thermo-mechanical model of SPS process which takes into account the thermoelectric effects has been developed via COMSOL Multiphysics, a commercial finite element software. A grain growth law is integrated in the numerical model.
Experimental values of the microstructure obtained by high resolution SEM (UHR-SEM) are close to those obtained numerically. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |