Thermoelectric Performance of Glass Microsphere Dispersed Bi-Sb Composites at Low Temperature

摘要：

　　In the present study,the glass microsphere dispersed Bi-Sb thermoelectric materials have been fabricated through mechanical alloying followed by pressureless sintering.The phase composition and the microstructure were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis.Electrical conductivity,Seebeck coefficient and thermal conductivity were measured in the temperature range of 77~300 K.The ZT values were calculated according to the measurement results.The results showed that the electrical conductivity,Seebeck coefficient and thermal conductivity decreased by adding glass microsphere into Bi-Sb thermoelectric materials.However,the optimum ZT value of 0.24 was obtained at 260 K,which was increased 10% than that of the Bi-Sb matrix.So it is confirmed that the thermoelectric performance of Bi-Sb-based materials can be improved by adding moderate glass microspheres.

关键词： Thermoelectric materials Glass microsphere Thermoelectric performance Cryogenic temperatures

作者: Zhen Chen Yemao Han Min Zhou Rongjin Huang Yuan Zhou Laifeng Li

作者单位: Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Scien Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Scien

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 120-125

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）