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Microstructure and thermoelectric properties of n-type Bi2Te2.85Se0.15 prepared by mechanical alloying and plasma activated sintering
- Source :
-
Journal of Alloys & Compounds . Aug2006, Vol. 420 Issue 1/2, p256-259. 4p. - Publication Year :
- 2006
-
Abstract
- Abstract: Starting from elemental bismuth, tellurium and selenium powders, n-type Bi2Te2.85Se0.15 solid solution with fine microstructure was prepared by mechanical alloying (MA) and plasma activated sintering (PAS) in the present work. The effect of PAS process on microstructure and thermoelectric properties of the sintered samples was investigated. The sintering temperature of PAS process (683K) was 80â100K lower than that of conventional hot pressing and the whole PAS process was also greatly shortened to about 30min. A preferentially orientated microstructure with the basal planes (00 l) perpendicular to pressing direction was formed in the PASed sample and the maximum figure of merit (Z) at room temperature was 1.80×10â3 Kâ1. [Copyright &y& Elsevier]
- Subjects :
- *IRON metallurgy
*ISOSTATIC pressing
*POWDER metallurgy
*MICROSTRUCTURE
Subjects
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 420
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 21493519
- Full Text :
- https://doi.org/10.1016/j.jallcom.2005.10.025