Effect of FAPAS Process on the Thermoelectric Properties of β-FeSi2

Abstract:

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Iron disilicide (-FeSi2, and -FeSi2+Cu0.1wt%) were prepared by a field-activated pressure assisted synthesis(FAPAS) method from elemental powders and the thermoelectric properties were investigated. The average grain size of these products is about 0.3m. The thermal conductivity of these materials is 3-4wm-1K-1in the temperature range 300-725K. These products’ figure of merit is 28.50×10-4 in the temperature range 330-450K. The additions of Cu promote the phase transformation of -Fe2Si5 + -FeSi → β-FeSi2 and shorten the annealing time. It is proved that FAPAS is a benign and rapid process for sintering of -FeSi2 thermoelectric materials.

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Periodical:

Edited by:

Yafang Han, Tianmin Wang and Shaoxiong Zhou

Pages:

137-141

DOI:

10.4028/www.scientific.net/MSF.650.137

Citation:

Q. S. Meng et al., "Effect of FAPAS Process on the Thermoelectric Properties of β-FeSi2 ", Materials Science Forum, Vol. 650, pp. 137-141, 2010

Online since:

May 2010

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$35.00

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