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Effects of Homogenization Treatment on Thermoelectric Properties of Ba8Al16Si30

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Abstract:

The Arc melting technique was employed to synthesize the type I clathrate of Ba8Al16Si30 compound. Phase transformations during synthesis and homogenization treatment were investigated using X-ray diffraction (XRD) and thermal analysis (TG/DSC). Thermoelectric properties as functions of temperature and homogenization treatment time were evaluated in this study. Maximum ZT was 0.14 at 590K for homogenized at 1173 K for 168hrs specimen and it is strongly expected to show higher value above 600K.

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Periodical:

Materials Science Forum (Volumes 544-545)

Pages:

275-278

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.544-545.275

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Online since:

May 2007

Authors:

Joo Ho Lee, Jung Il Lee, Young Ho Kim, Il Ho Kim, Kyung Wook Jang, Soon Chul Ur, Han Cheol Choe, Gon Seung Yang

Keywords:

Arc-Melting, BaAlSi, Clathrate, Homogenization, Thermoelectric

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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