skip to main content

DOE PAGESDOE PAGES

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

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.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [1] ; ORCiD logo [3] ; ORCiD logo [4] ;  [4] ; ORCiD logo [5] ;  [6] ;  [6]
  1. Giredmet, Ltd., Moscow (Russian Federation)
  2. Technological Inst. for Superhard and Novel Carbon Materials, Moscow (Russian Federation)
  3. ITMO Univ., St. Petersburg (Russian Federation)
  4. Northwestern Univ., Evanston, IL (United States)
  5. ITMO Univ., St. Petersburg (Russian Federation); Northwestern Univ., Evanston, IL (United States)
  6. National Univ. of Science and Technology, Moscow (Russian Federation)
Publication Date:
Grant/Contract Number:
SC0001299; FG02-09ER46577
Type:
Published Article
Journal Name:
APL Materials
Additional Journal Information:
Journal Volume: 4; Journal Issue: 10; Related Information: S3TEC partners with Massachusetts Institute of Technology (lead); Boston College; Oak Ridge National Laboratory; Rensselaer Polytechnic Institute; Journal ID: ISSN 2166-532X
Publisher:
American Institute of Physics (AIP)
Research Org:
Energy Frontier Research Centers (EFRC) (United States). Solid-State Solar-Thermal Energy Conversion Center (S3TEC)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1259979
Alternate Identifier(s):
OSTI ID: 1388404; OSTI ID: 1420528