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.
出处
《中国有色金属学会会刊：英文版》
CSCD
2007年第A02期1010-1013,共4页
Transactions of Nonferrous Metals Society of China
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
（Bi0.25Sb0.75）2Te3
thermoelectric material
spark plasma sintering（SPS）
sintering temperature
