Adv. Search
Journal of Inorganic Materials

Journal of Inorganic Materials >

2010 , Vol. 25 >Issue 6: 588 - 592

DOI: https://doi.org/10.3724/SP.J.1077.2010.00588

Research Paper

Effect of Spinning and Milling Time on Thermoelectric Properties of the p-type (Bi0.25Sb0.75)2Te3 Alloy

  • WANG Lei1 ,
  • 2 ,
  • LU Qing-Mei1 ,
  • 2 ,
  • ZHANG Xin1 ,
  • 2 ,
  • ZHANG Jiu-Xing1 ,
  • 2
Expand
  • (1. Key Lab. of Advanced Functional Materials, Ministry of Education, Beijing University of Technology, Beijing 100124, China; 2. College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China)

Received date: 2009-10-14

  Revised date: 2009-12-17

  Online published: 2010-05-12

Fold

Abstract

A series of p type bulk (Bi0.25Sb0.75)2Te3 thermoelectric materials were prepared by melt spinning-mechanical milling (MM) and spark plasma sintering (SPS). Electrical conductivity, Seebeck coefficient and thermal conductivity of the sintered samples were measured in the temperature range from 300K to 523K. The effects of milling time on thermoelectric properties were investigated in system. The results show that, with the extension of milling time, the electrical conductivity of the sample increases and then decreases, Seebeck coefficient changes little, while the thermal conductivity decreases with the increase of milling time. As a result, the bulk milled for 20h has the highest ZT value 0.96 at room temperature, meanwhile the bending strength reaches 91MPa.

Key words： thermoelectric material; melt spinning; mechanical milling; spark plasma sintering (SPS)

Cite this article

WANG Lei1 , 2 , LU Qing-Mei1 , 2 , ZHANG Xin1 , 2 , ZHANG Jiu-Xing1 , 2 . Effect of Spinning and Milling Time on Thermoelectric Properties of the p-type (Bi0.25Sb0.75)2Te3 Alloy[J]. Journal of Inorganic Materials, 2010 , 25(6) : 588 -592 . DOI: 10.3724/SP.J.1077.2010.00588

References

[1]Mahan Gerald, Sales Brian, Sharp Jeff. Thermoelectric materials: new approaches to an old problem. Physics Today, 1997, 50(3): 42-47.

[2]Ni H L, Zhu T J, Zhao X B. Thermoelectric properties of hydrothermally synthesized and hot pressed n-type Bi2Te3 alloys with different contents of Te. Materials Science & Engineering B, 2005, 117(2): 119-122.

[3]Su T C, Zhu P W, Ma H A, et al. Electrical transport and thermoelectric properties of PbTe doped with Sb2Te3 prepared by high- pressure and high-temperature. J. Alloys Comp., 2006, 422(1/2): 328-331.

[4]Hillhouse Hugh W, Tuominen Mark T. Modeling the thermoelectric transport properties of nanowires embedded in oriented microporous and mesoporous films. Microp. Mesop. Mater., 2001, 47(1): 39-50.

[5]Dauscher A, Lenoir B, Boffoue O, et al. Thermoelectric films prepared by pulsed laser deposition. ALT01 international conference on advanced laser technologies. Proceedings of SPIE, 2002, 4762: 52-63.

[6]马秋花, 孙亚光. Bi-Te基热电材料的研究进展.稀有金属快报,2007, 26(6):7-10

[7]Tang X F, Xie W J, Li H, et al. Preparation and thermoelectric transport properties of high-performance p-type Bi2Te3 with layered nanostructure. Applied physics letters, 2007, 90(1): 12102-12105.

[8]Cui J L, Mao L D, Yang W, et al. Thermoelectric properties of Cu-doped n-type (Bi2Te3)0.9-(Bi2-xCuxSe3)0.1(x=0-0.2) alloys. Journal of Solid State Chemistry, 2007, 180(12): 3583-3587.

[9]刘恩科, 朱秉升, 罗普生, 等. 半导体物理学, 4版. 北京: 国防工业出版社, 2008: 85-86.

[10]李 佳, 张 忻, 路清梅, 等. 球磨时间对p型Bi2Te3基热电材料性能的影响. 功能材料, 2007, 38: 1338-1340.

[11]余柏林, 祁 琼, 唐新峰, 等(YU Bo-Lin, et al). 晶粒尺寸对CoSb3化合物热电性能的影响. 物理学报(Acta Physica Sinica), 2005, 54(12): 5763-5768.

[12]Orihashi M, NodaY, Kaibe H T, et al. Evaluation of thermoelectric properties of impurity doped PbTe. Materials Transactions, 1998, 39(6): 672-678.
Options
Outlines

/

〈 〉