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Mechanical alloy and Thermoelectric Properties of $\beta-FeSi_2$ by Planetary Ball Milling  

Park Keunil (Department of Chemical Eng., Univ. of Seoul)
Cho Sung Il (Department of Chemical Eng., Univ. of Seoul)
Publication Information
Korean Journal of Crystallography / v.15, no.2, 2004 , pp. 104-109 More about this Journal
Abstract
The mechanical synthesis of thermoelectric material $FeSi_2$ by planetary ball mill has been investigated. The homogeneous and amorphous mixture of Fe-Si has been obtained by mechanical alloying for 850 rpm-40 min. The $\beta-FeSi_2$ powder could be synthesized by 1123 K-3 hr annealing heat treatment after mechanical alloying for 850 rpm-10, 20, and 40 min. The ceramic samples doped with the maximum content up to $10\;at.\;\%$ Co have exhibited semiconduction phenomena and maximum thermoelectric powder at 440K.
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