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

Qing Sen Meng; Wen Hao Fan; L.Q. Wang; L.Z. Ding

doi:10.4028/www.scientific.net/MSF.650.137

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HomeMaterials Science ForumMaterials Science Forum Vol. 650Effect of FAPAS Process on the Thermoelectric...

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

Abstract:

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:

Materials Science Forum (Volume 650)

Pages:

137-141

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.650.137

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Online since:

May 2010

Authors:

Qing Sen Meng, Wen Hao Fan, L.Q. Wang, L.Z. Ding

Keywords:

Field Activated, Reactive Sintering, Thermoelectric Property, β-FeSi₂

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