Microstructure and properties of p-type (Bi0.25Sb0.75)2Te3 fabricated byspark plasma sintering|WANG Fu-qiang(王富强), CHEN Hui(陈晖), WANG Zhong(王忠), CHENG Yan(成艳),CHU Ying(褚颖), ZHU Lei(朱磊), JIAN Xu-yu(简旭宇)-《中国有色金属学报》官方网站|全网首发|论文开放获取

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 17 Special 1 November 2007

Microstructure and properties of p-type (Bi_0.25Sb_0.75)₂Te₃fabricated by
spark plasma sintering

WANG Fu-qiang(王富强), CHEN Hui(陈晖), WANG Zhong(王忠), CHENG Yan(成艳),
CHU Ying(褚颖), ZHU Lei(朱磊), JIAN Xu-yu(简旭宇)

（Energy Materials and Technology Research Institute,
General Research Institute for Nonferrous Metals, Beijing 100088, China）

Abstract:P-type thermoelectric material (Bi_0.25Sb_0.75)₂Te₃ was sintered by spark plasma sintering(SPS) process in the temperature range of 320−420 ℃. The microstructures of sintered materials were found to be well aligned, particularly when sintered at lower sintering temperatures. The electrical conductivity of the material became larger as the sintering temperature increased. The Seebeck coefficient showed a general decreasing tendency with an increase in sintering temperature. In terms of the power factor, the optimum sintering temperature was found to be 380 ℃ for a maximum value of around 2.6 mW/K.

Key words: (Bi_0.25Sb_0.75)₂Te₃; thermoelectric material; spark plasma sintering(SPS); sintering temperature

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW