|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Alloys and Compounds for Thermoelectric and Solar Cell Applications V
||Silicon Carbide Particles as Nanoinclusions for Improved Thermoelectrics
||Devin Coleman, Sabah Bux, Lorenzo Mangolini
|On-Site Speaker (Planned)
The synthesis of beta-phase silicon carbide nanoparticles exhibiting a hollow core-shell morphology is demonstrated by means of a two-step non-thermal plasma process. These particles are mixed with silicon nanopowders produced by means of high energy ball milling, and densified via hot press into bulk samples for silicon-based thermoelectric materials. While the silicon nanoparticles exhibit grain growth during the densification process, the isolated silicon carbide nanoparticles retain their initial size in the bulk material. Moreover, the morphology of initial silicon carbide nanoparticles can be controlled by tuning of the plasma process to produce ~10nm solid silicon carbide particles, or ~25nm hollow silicon carbide nanoshells with a ~10nm void. The introduction of hollow silicon carbide particles into the silicon matrix offers the opportunity to controllably insert nanovoid inclusions into a bulk material, and elucidate their effect on thermal conductivity.
||Planned: Supplemental Proceedings volume