Preparation of B-C system solid solutions by arc melting and their thermoelectric properties

Takashi Goto; Jianhui Li; Toshio Hirai

doi:10.2497/jjspm.43.306

Preparation of B-C system solid solutions by arc melting and their thermoelectric properties

Takashi Goto, Jianhui Li, Toshio Hirai

Materials Processing and Characterization Division

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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.

Original language	English
Pages (from-to)	306-310
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	43
Issue number	3
DOIs	https://doi.org/10.2497/jjspm.43.306
Publication status	Published - 1996 Mar

Keywords

Arc melting
Boron carbide
High temperature
Non-stoichiometry
Thermoelectric properties

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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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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author = "Takashi Goto and Jianhui Li and Toshio Hirai",

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AU - Goto, Takashi

AU - Li, Jianhui

AU - Hirai, Toshio

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N2 - 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.

AB - 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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