Thermoelectric Properties of Sn-Substituted AgPbmSbTem+2 via the Route of Mechanical Alloying and Plasma-Activated Sintering
Thermoelectric Properties of Sn-Substituted AgPbmSbTem+2 via the Route of Mechanical Alloying and Plasma-Activated Sintering
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DOI：
10.1007/s11664-012-1908-x
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发表时间：
2012-02
影响因子：
2.1
通讯作者：
Jin Wu;Junyou Yang;Jiansheng Zhang;Gen Li;Jiangying Peng;Ye Xiao;L. Fu;Qiongzhen Liu
中科院分区：
文献类型：
--
作者：
Jin Wu;Junyou Yang;Jiansheng Zhang;Gen Li;Jiangying Peng;Ye Xiao;L. Fu;Qiongzhen Liu
Starting from elemental powders of Ag, Sn, Pb, Sb, and Te, Sn-substituted single-phase LAST (AgPbmSbTem+2) materials were synthesized by a combined process of mechanical alloying and plasma-activated sintering. The effect of Sn content on thermoelectric (TE) properties of the Sn-substituted LAST materials was investigated in detail. With increase of Sn/Pb ratio, the fraction of SnTe in the (Pb,Sn)Te-based solid solution increased, and the lattice spacing decreased accordingly. The electrical conductivity, thermal conductivity, and power factor also increased with increasing substitutional Sn content. It was found that the composition AgPb9Sn9SbTe20had superior TE properties compared with other compositions, and the maximumZTof 0.70 was achieved at 675 K for this composition.
