Functionally Graded Electrode Materials for Thermoelectric Devices

Abstract:

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The electrodes for solar thermoelectric modules require high thermal conductivity in the thickness direction and high electrical conductivity in the plane direction; but the whole electrode must be electrically insulated in the thickness direction. To meet such requirements, two material systems of TiB2/AlN/Cu and Cu/AlN/Cu with AlN as a middle layer were designed and studied, because AlN has high thermal conductivity and electrical resistance. The TiB2/AlN/Cu FGMs were fabricated via spark plasma sintering (SPS) method, in which a temperature gradient was achieved by using a specially designed mold. The Cu/AlN/Cu symmetrical FGMs were fabricated by an infiltration-like process using a symmetrical porosity-graded AlN plate as a preform.

Info:

Periodical:

Edited by:

P. VINCENZINI

Pages:

1134-1138

DOI:

10.4028/www.scientific.net/AST.45.1134

Citation:

J. F. Li and H. Q. Zhang, "Functionally Graded Electrode Materials for Thermoelectric Devices", Advances in Science and Technology, Vol. 45, pp. 1134-1138, 2006

Online since:

October 2006

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Price:

$35.00

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