Microstructure and properties of p-type (Bi_(0.25)Sb_(0.75))_2Te_3 fabricated by spark plasma sintering  

作　　者：王富强 陈晖 王忠 成艳 褚颖 朱磊 简旭宇 

机构地区：[1]Energy Materials and Technology Research Institute,General Research Institute for Nonferrous Metals

出　　处：《中国有色金属学会会刊：英文版》2007年第A02期1010-1013,共4页Transactions of Nonferrous Metals Society of China

摘　　要：P-type thermoelectric material(Bi0.25Sb0.75)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.P-type thermoelectric material （Bi0.25Sb0.75）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.

关 键 词：热电材料 火花等离子体烧结 烧结温度 微观结构 性能 

分 类 号：TF124.5[冶金工程—粉末冶金]