Thermoelectric properties of directionally solidified B4C-TiB2 composites by an FZ method

Itaru Gunjishima; Takaya Akashi; Takashi Goto

doi:10.2497/jjspm.47.1184

Thermoelectric properties of directionally solidified B₄C-TiB₂ composites by an FZ method

Itaru Gunjishima, Takaya Akashi, Takashi Goto

Materials Processing and Characterization Division

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

5 Citations (Scopus)

Abstract

Thermoelectric properties of directionally solidified B₄C-TiB₂ composites by a Floating Zone method were studied at temperatures from RT to 1023 K. The composition of TiB₂ was changed between 0 and 25 mol% (eutectic composition). The difference of electrical conductivity (σ) and Seebeck coefficient (α) between parallel (∥) and perpendicular (⊥) to the growth direction were measured. At the eutectic composition, σ_∥ was greater than σ_⊥, and α_⊥ was greater than α_∥. Both α_⊥ and α_∥ showed the maximum around 2 mol%. The greatest power factor of 0.48×10^-3 WK^-2m^-1 was obtained at 2 mol% in the perpendicular to the growth direction.

Original language	English
Pages (from-to)	1184-1188
Number of pages	5
Journal	Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume	47
Issue number	11
DOIs	https://doi.org/10.2497/jjspm.47.1184
Publication status	Published - 2000 Nov

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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abstract = "Thermoelectric properties of directionally solidified B4C-TiB2 composites by a Floating Zone method were studied at temperatures from RT to 1023 K. The composition of TiB2 was changed between 0 and 25 mol% (eutectic composition). The difference of electrical conductivity (σ) and Seebeck coefficient (α) between parallel (∥) and perpendicular (⊥) to the growth direction were measured. At the eutectic composition, σ∥ was greater than σ⊥, and α⊥ was greater than α∥. Both α⊥ and α∥ showed the maximum around 2 mol%. The greatest power factor of 0.48×10-3 WK-2m-1 was obtained at 2 mol% in the perpendicular to the growth direction.",

author = "Itaru Gunjishima and Takaya Akashi and Takashi Goto",

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