| タイトル | Shockwave Consolidation of Nanostructured Thermoelectric Materials |
| 本文（外部サイト） | http://hdl.handle.net/2060/20150013983 |
| 著者（英） | Taylor, Patrick; Prasad, Narasimha S.; Nemir, David |
| 発行日 | 2014-08-17 |
| 言語 | eng |
| 内容記述 | Nanotechnology based thermoelectric materials are considered attractive for developing highly efficient thermoelectric devices. Nano-structured thermoelectric materials are predicted to offer higher ZT over bulk materials by reducing thermal conductivity and increasing electrical conductivity. Consolidation of nano-structured powders into dense materials without losing nanostructure is essential towards practical device development. Using the gas atomization process, amorphous nano-structured powders were produced. Shockwave consolidation is accomplished by surrounding the nanopowder-containing tube with explosives and then detonating. The resulting shock wave causes rapid fusing of the powders without the melt and subsequent grain growth. We have been successful in generating consolidated nano-structured bismuth telluride alloy powders by using the shockwave technique. Using these consolidated materials, several types of thermoelectric power generating devices have been developed. Shockwave consolidation is anticipated to generate large quantities of nanostructred materials expeditiously and cost effectively. In this paper, the technique of shockwave consolidation will be presented followed by Seebeck Coefficient and thermal conductivity measurements of consolidated materials. Preliminary results indicate a substantial increase in electrical conductivity due to shockwave consolidation technique. |
| NASA分類 | Fluid Mechanics and Thermodynamics; Structural Mechanics; Composite Materials |
| レポートNO | SPIE Paper 9226-18
NF1676L-19405 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
