|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications X
||The Role of Additive Manufacturing in Tailoring Thermoelectric Leg Shape and Transport Properties
||Saniya Leblanc, Bengisu Sisik, Ryan Welch, Yahya Cagri Oztan, Vijayabarathi Ponnambalam
|On-Site Speaker (Planned)
The advent of new manufacturing techniques such as additive manufacturing enables customizable thermoelectric device shapes, but there is little knowledge about what shapes are desirable and what impact additive manufacturing processes have on transport properties. In this work, we show the effect of different (non-rectangular) thermoelectric leg designs on thermoelectric device performance. Various leg shapes (rectangular prisms, rectangular prisms with interior hollows, trapezoids, hourglass, and Y-shapes) and two materials (bismuth telluride and silicon germanium) were modeled numerically to determine their thermal and electrical performance under constant temperature and heat flux boundary conditions for low and high temperature applications. Laser powder bed additive manufacturing experiments were conducted on both materials, and transport properties (Seebeck coefficient, electrical conductivity, thermal diffusivity) as well as microstructure were characterized. The results provide insight about how additive manufacturing may enable topological optimization of thermoelectric devices.
||Additive Manufacturing, Electronic Materials, High-Temperature Materials