Thermoelectric Properties of Bi2Te3 Alloy Prepared by Mechanical Alloying and Spark Plasma Sintering
The Bi2Te3 compound was synthesized by mechanical alloying (MA) of highly pure constituents of Bi and Te powders,and then was consolidated by spark plasma sintering (SPS) method.The MA-derived alloy formation was characterized by X-ray diffraction (XRD),and the microstructure change was investigated through scanning electron microscopy (SEM).The thermoelectric properties were measured using a Seebeck Coefficient/Electrical Resistance Measuring System.The influence of MA time on the thermoelectric properties of the SPS-sintered samples was investigated to find the optimal MA condition for the powder synthesis and thermoelectric properties.The obtained results showed that the sample with the MA time of 6 h exhibited the optimal electrical transport properties.The maximum power factor of over 2.0 × 10-3 W/m K2 was obtained between 323 K and 423 K.
Thermoelectric properties Mechanical Alloying Spark Plasma Sintering Bi2Te3
Min Zhou Jingfeng Li Jing Liu
State Key Laboratory of New Ceramics and Fine Processing,Department of Materials Science and Engineering,Tsinghua University,Beijing 100084,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
538-540
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）