| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications XIII
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| Presentation Title |
Novel Elaboration Route for Thermoelectric Legs Shaping: The Case of p-Type Higher Manganese Silicide and the Impact of the Geometry |
| Author(s) |
Yohann Thimont, Alexia Mortagne Coderch, Geoffroy Chevalier, Benjamin Duployer, Amélie Galodé, David Berthebaud, Franck Gascoin, Lionel Presmanes |
| On-Site Speaker (Planned) |
Yohann Thimont |
| Abstract Scope |
Laser Additive manufacturing techniques are a promising process which could be used to obtain complex-shape thermoelectric legs without machining step. Nevertheless, this approach reveals difficulty because of low thermal conductivity of thermoelectric materials leading the presence of cracks, phases degradation and porosity. In the presented work, p-type thermoelectric Higher Manganese Silicide legs were elaborated by an alternative Additive Manufacturing (AM) technique coupled to an innovating sintering step. Legs showed good density (>95%) without cracks, no phase degradation and keep shaping. As result, legs showed similar transport properties than those elaborated by the conventional route. Moreover, a complementary study has demonstrated that a legs including fins showed a better thermal dissipation leading to higher voltages. The gain of voltage reached 16% for an applied temperature of 75°C. This novel route could be used for various TE compounds, should allowing the manufacturing cheaper more efficient thermoelectric devices due to new legs geometries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Energy Conversion and Storage, Additive Manufacturing, Shaping and Forming |