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Title: Improved mechanical properties of thermoelectric (Bi 0.2 Sb 0.8 ) 2 Te 3 by nanostructuring

Journal Article · · APL Materials
DOI:https://doi.org/10.1063/1.4953173· OSTI ID:1259979

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.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001299; FG02-09ER46577
OSTI ID:
1259979
Alternate ID(s):
OSTI ID: 1388404; OSTI ID: 1420528
Journal Information:
APL Materials, Journal Name: APL Materials Vol. 4 Journal Issue: 10; ISSN 2166-532X
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (2)

Nanomechanical and wettability properties of Bi2Te3 thin films: Effects of post-annealing journal May 2017
Carbon-Based Materials for Thermoelectrics journal July 2018

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