Paper Title:
Fabrication and Evaluation of CoSb3/Electrode Thermoelectric Joints
  Abstract

Joining of TE material to electrode is the key technique in the construction of TE device for the practical applications. In this study, a suitable alloy electrode was introduced into CoSb3-based element by means of spark plasma sintering (SPS). Finite element analysis showed that the maximum thermal residual stress appeared at the cylindrical surface zone close to the CoSb3/electrode interface. Microstructure of CoSb3/electrode was investigated by EPMA and the intermetallic compound (IMC) layers were found. The shear strength of CoSb3/electrode joints was tested and the results show that the joints have sufficient strength for reliability of TE device. Electrical contact resistance between CoSb3 and electrode was measured by means of four-probe technique. The results show that the contact resistance was minimal and below the 50μΩ.cm2, which meant the joint exhibited a good electrical contact. The high temperature reliability evaluation showed good thermal duration stability of the CoSb3/electrode joints.

  Info
Periodical
Materials Science Forum (Volumes 631-632)
Edited by
Akira Kawasaki, Akinaga Kumakawa and Masayuki Niino
Pages
313-318
DOI
10.4028/www.scientific.net/MSF.631-632.313
Citation
D. G. Zhao, X. Y. Li, Y. H. Cai, W. Jiang, L. D. Chen, "Fabrication and Evaluation of CoSb3/Electrode Thermoelectric Joints", Materials Science Forum, Vols. 631-632, pp. 313-318, 2010
Online since
October 2009
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Price
$32.00
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