会议专题

Phases and Thermoelectric Properties of Bulk NiSb2 and Composite of NiSb2 and CoSb3 Prepared by Sintering

  For researching the thermoelectric properties,bulk NiSb2 and the composite of CoSb3 and NiSb2 were prepared by sintering.The phases of samples were analyzed by X-ray diffraction and their thermoelectric properties were tested by electric constant instrument and laser thermal constant instrument.Experimental results show that,Bulk NiSb2 and the composite of NiSb2:CoSb3=2:8 and 4:6 were prepared by sintering at 600℃ for 10min and they are N-type semiconductor materials with high densities of 6.998~7.142g/cm3.The bulk NiSb2 sample sintered is nearly single phase NiSb2,while the major phases of the composite of NiSb2:CoSb3=2:8 are major phase CoSb3 with impurity phase NiSb2.The electric resistivity of bulk NiSb2 sample increases with temperature rising while those of the composites (NiSb2:CoSb3=2:8 and 4:6) increase at 400~500 ℃.The absolute values of Seebeck coefficients of the composite samples (NiSb2:CoSb3=2:8 and 4:6) increase with temperature rising and are evidently higher than those of bulk NiSb2.The power factors of the composites (NiSb2:CoSb3=2:8 and 4:6) are evidently higher than those of bulk NiSb2 while the power factor of NiSb2 sample varies not obviously with temperature rising,but those of the composites (NiSb2:CoSb3=2:8 and 4:6) increase with temperature rising and reaches the maximum value of 21.3 10-4Wk2m-1 at 500 ℃.

NiSb2 composite thermoelectric properties CoSb3

Kegao Liu Nianjing Ji Zhongquan Ma

School of Materials Science and Engineering,Shandong Jianzhu University,Fengming Road,Jinan 250101,China

国际会议

the 2012 2nd International Conference on Frontiers of Manufacturing Science and Measuring Technology (第二届制造科学与检测技术国际会议(ICFMM 2012))

西安

英文

507-510

2012-06-12(万方平台首次上网日期,不代表论文的发表时间)