|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XVI
||Phase Transformations at Thermoelectric-Metal Interfaces – Experimental Analysis
||Samad Firdosy, Kurt Star, Jean-Pierre fleurial, Vilupanur Ravi, Yong-Jie Hu, Yi Wang, Zi-Kui Liu
|On-Site Speaker (Planned)
The Advanced Thermoelectric Couple development Task, as part of NASA’s Radioisotope Power Systems Program’s Thermoelectric Technology Development Project (TTDP), has developed several advanced high-temperature thermoelectric materials, including n-type La3-xTe4, p-type Yb14MnSb11, and n- and p-type filled skutterudites (SKD) for potential integration into advanced power generation devices. The zintl material Yb14MnSb11 is part of the hot side segment of the thermoelectric (TE) couple that also includes nickel as a hot side electrode. The long-term stability of these materials in juxtaposition to each other is critical to the success of these devices that need to operate for a long time (17 years). This talk will discuss device performance and microstructural analysis relevant to TE couple performance and longevity with a particular focus on interface between the materials constituting the couple. The experimental work is being supplemented and supported by thermodynamic modeling based on a CALPHAD approach.
||Planned: Supplemental Proceedings volume