|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications V
||Phase Equilibria of Ternary Sn-Sb-Co Systems and Ge-Co-Sb and Thermoelectric Properties of Sn/Ge Doped Skutterudite CoSb3
||Ping-Yuan Deng, Hsin-Jay Wu
|On-Site Speaker (Planned)
Thermoelectric materials and devices can generate electricity from thermal energy directly, and can be useful in waste heat recovery. The skutterudite CoSb3 has been a promising candidate for mid-temperature thermoelectric generator, and proper dopants, such as Ge and Sn, might have to be introduced into the CoSb3 for optimizing the thermal/electrical transport properties. Phase equilibria, which illustrates relationship between the phase stability, microstructures and thermal-to-electricity conversion, could be crucial and the phase diagrams of ternary Sn-Sb-Co and Ge-Co-Sb systems have been determined by experiments. Herein the liquidus projection of ternary Ge-Co-Sb and Sn-Co-Sb system are constructed; various ternary Ge-Co-Sb and Sn-Co-Sb alloys are either thermally-equilibrated at 400℃ for 45 days or solidified by water-quenching to investigate the microstructural evolution. On the basis of phase diagram determined in this study, selective ternary Ge-doped/Sn-doped CoSb3 alloys are synthesized and their thermoelectric properties are measured within 300K-700K.
||Planned: Supplemental Proceedings volume