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High-performance Ag0.8Pb18+xSbTe20 thermoelectric bulk materials fabricated by mechanical alloying and spark plasma sintering.
High-performance Ag0.8Pb18+xSbTe20 thermoelectric bulk materials fabricated by mechanical alloying and spark plasma sintering.
- Source :
- Applied Physics Letters; 2/27/2006, Vol. 88 Issue 9, p092104, 3p, 1 Black and White Photograph, 1 Chart, 3 Graphs
- Publication Year :
- 2006
-
Abstract
- Polycrystalline Ag<subscript>n</subscript>Pb<subscript>m</subscript>SbTe<subscript>m+2n</subscript> thermoelectric materials, whose compositions can be described as Ag<subscript>0.8</subscript>Pb<subscript>18+x</subscript>SbTe<subscript>20</subscript> were prepared using a combined process of mechanical alloying and spark plasma sintering. Electric properties of the sintered samples with different Pb contents were measured from room temperature to 700 K. The maximum power factor of 1.766 mW/mK<superscript>2</superscript> was obtained at 673 K for the Ag<subscript>0.8</subscript>Pb<subscript>22</subscript>SbTe<subscript>20</subscript> sample, which corresponds to a high dimensionless figure of merit, ZT=1.37. This best composition is different from that reported before. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00036951
- Volume :
- 88
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Applied Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 20064703
- Full Text :
- https://doi.org/10.1063/1.2181197