Thermoelectric properties of bismuth telluride based materials prepared by powder metallurgy processing

被引：0
|
作者：
Ren, Wei [1 ]
Liu, Xuequan [1 ]
Wang, Xiaolin [2 ]
Jiang, Hongyi [2 ]
机构：
[1] Cent Iron & Steel Res Inst, 76 Xueyuannan Rd, Beijing 100081, Peoples R China
[2] Wuhan Univ Technol, Inst Mat Sci & Engn, Wuhan 430070, Peoples R China
来源：
HIGH-PERFORMANCE CERAMICS IV, PTS 1-3 | 2007年 / 336-338卷
关键词：
Bi2Te3; alloys; thermoelectric;
D O I：
10.4028/www.scientific.net/KEM.336-338.864
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Polycrystalline samples of Bi2Te3 based alloys were prepared by powder metallurgy processing including a melting-grinding and a sintering procedure of compacted pellets. Two sintering procedures as hot-pressing and spark plasma sintering (SPS) were employed. The thermoelectric properties and mechanical strength were measured in all case. Thermoelectric properties for p-type (Bi0.25Sb0.75)(2)Te-3 and n-type Bi-2(Te0.2Se0.8)(3) changed with sintering temperature in both sintering methods. Mechanical strength and relative density increase with sintering temperature in two sintering procedures. The results firmly suggest that both sintering procedures are promising to obtain high performance thermoelectric materials.
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页码：864 / +
页数：2
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