Journal of the Japan Society of Powder and Powder Metallurgy
Online ISSN : 1880-9014
Print ISSN : 0532-8799
ISSN-L : 0532-8799
Preparation of B-C System Solid Solutions by Arc Melting and their Thermoelectric Properties
Takashi GotoJianhui LiToshio Hirai
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JOURNAL OPEN ACCESS

1996 Volume 43 Issue 3 Pages 306-310

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Abstract
B-C system compounds were prepared by arc melting in argon atmosphere using B4C, B and C powders. The non-stoichiometric composition of the B-C compounds ranged between 10 and 20at%C. The maxima of the Seebeck coefficient values were observed at 20at%C (B4C), and the greatest value was 270 μV/K at 1100K. The electrical conductivity increased with increasing carbon content in general, but had minimum at 17at%C (B5C). The thermal conductivity increased with increasing carbon content. The thermoelectric figure of merit values (Z) decreased with increasing carbon content, but the Z values showed maximum at 20at%C (B4C). The greatest ZT value of B4C at 1100K was 0.15.
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