| About this Abstract |
| Meeting |
2016 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alloys and Compounds for Thermoelectric and Solar Cell Applications IV
|
| Presentation Title |
Effect of Excess Magnesium on Mg2Sn Based Thermoelectric Materials |
| Author(s) |
Matthew Barnett, Rameshkumar Varma, Sitarama Raju Kada |
| On-Site Speaker (Planned) |
Matthew Barnett |
| Abstract Scope |
This paper examines the effect of magnesium levels on the power factor of Mg2Sn based alloys. Mg2Sn+Mg alloys were doped with 0.3 wt % Ag and melted using RF induction casting method. Samples were allowed to cool in their crucibles. The thermoelectric properties of the non-stoichiometric compositions in the as-cast un-doped and Ag doped alloys were investigated by the measurement of Seebeck coefficient and electrical conductivity. Microstructural analysis was also performed. A systematic increase in the power factor with increasing Mg was observed at low operating temperatures. It is proposed that excess Mg addition to this system might be a key to creating a superior product. Possible reasons for the effect are discussed based on microstructural observations. |
| Proceedings Inclusion? |
Planned: A print-only volume |