Improved mechanical properties of thermoelectric (Bi0.2Sb0.8)2Te3 by nanostructuring

M. G. Lavrentev; V. B. Osvenskii; Yu N. Parkhomenko; G. I. Pivovarov; A. I. Sorokin; L. P. Bulat; H. S. Kim; I. T. Witting; G. J. Snyder; V. T. Bublik; N. Yu Tabachkova

doi:10.1063/1.4953173

Improved mechanical properties of thermoelectric (Bi_0.2Sb_0.8)₂Te₃ by nanostructuring

M. G. Lavrentev, V. B. Osvenskii, Yu N. Parkhomenko, G. I. Pivovarov, A. I. Sorokin, L. P. Bulat, H. S. Kim, I. T. Witting, G. J. Snyder, V. T. Bublik, N. Yu Tabachkova

Department of Materials Science and Engineering

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

22 Scopus citations

Abstract

Temperature-dependent strength of Bi-Sb-Te under uniaxial compression is investigated. Bi-Sb-Te samples were produced by three methods: vertical zone-melting, hot extrusion, and spark plasma sintering (SPS). For zone-melted and extruded samples, the brittle-ductile transition occurs over a temperature range of 200-350 °C. In nanostructured samples produced via SPS, the transition is observed in a narrower temperature range of 170-200 °C. At room temperature, the strength of the nanostructured samples is higher than that of zone-melted and extruded samples, but above 300 °C, all samples decrease to roughly the same strength.

Original language	English
Article number	104807
Journal	APL Materials
Volume	4
Issue number	10
DOIs	https://doi.org/10.1063/1.4953173
State	Published - 1 Oct 2016

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title = "Improved mechanical properties of thermoelectric (Bi0.2Sb0.8)2Te3 by nanostructuring",

abstract = "Temperature-dependent strength of Bi-Sb-Te under uniaxial compression is investigated. Bi-Sb-Te samples were produced by three methods: vertical zone-melting, hot extrusion, and spark plasma sintering (SPS). For zone-melted and extruded samples, the brittle-ductile transition occurs over a temperature range of 200-350 °C. In nanostructured samples produced via SPS, the transition is observed in a narrower temperature range of 170-200 °C. At room temperature, the strength of the nanostructured samples is higher than that of zone-melted and extruded samples, but above 300 °C, all samples decrease to roughly the same strength.",

author = "Lavrentev, {M. G.} and Osvenskii, {V. B.} and Parkhomenko, {Yu N.} and Pivovarov, {G. I.} and Sorokin, {A. I.} and Bulat, {L. P.} and Kim, {H. S.} and Witting, {I. T.} and Snyder, {G. J.} and Bublik, {V. T.} and Tabachkova, {N. Yu}",

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doi = "10.1063/1.4953173",

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T1 - Improved mechanical properties of thermoelectric (Bi0.2Sb0.8)2Te3 by nanostructuring

AU - Lavrentev, M. G.

AU - Osvenskii, V. B.

AU - Parkhomenko, Yu N.

AU - Pivovarov, G. I.

AU - Sorokin, A. I.

AU - Bulat, L. P.

AU - Kim, H. S.

AU - Witting, I. T.

AU - Snyder, G. J.

AU - Bublik, V. T.

AU - Tabachkova, N. Yu

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Temperature-dependent strength of Bi-Sb-Te under uniaxial compression is investigated. Bi-Sb-Te samples were produced by three methods: vertical zone-melting, hot extrusion, and spark plasma sintering (SPS). For zone-melted and extruded samples, the brittle-ductile transition occurs over a temperature range of 200-350 °C. In nanostructured samples produced via SPS, the transition is observed in a narrower temperature range of 170-200 °C. At room temperature, the strength of the nanostructured samples is higher than that of zone-melted and extruded samples, but above 300 °C, all samples decrease to roughly the same strength.

AB - Temperature-dependent strength of Bi-Sb-Te under uniaxial compression is investigated. Bi-Sb-Te samples were produced by three methods: vertical zone-melting, hot extrusion, and spark plasma sintering (SPS). For zone-melted and extruded samples, the brittle-ductile transition occurs over a temperature range of 200-350 °C. In nanostructured samples produced via SPS, the transition is observed in a narrower temperature range of 170-200 °C. At room temperature, the strength of the nanostructured samples is higher than that of zone-melted and extruded samples, but above 300 °C, all samples decrease to roughly the same strength.

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U2 - 10.1063/1.4953173

DO - 10.1063/1.4953173

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ER -

Improved mechanical properties of thermoelectric (Bi_0.2Sb_0.8)₂Te₃ by nanostructuring

Abstract

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