High-temperature elastic moduli of thermoelectric SnTe1±x - Y SiC nanoparticulate composites

Robert D. Schmidt, Eldon D. Case, Jennifer E. Ni, Rosa M. Trejo, Edgar Lara-Curzio, Rachel J. Korkosz, Mercouri G. Kanatzidis

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23 Citations (Scopus)

Abstract

In waste heat recovery applications, thermoelectric (TE) generators are subjected to thermal gradients and thermal transients, creating mechanical stresses in the TE legs. Such stresses are functions of the elastic moduli of the TE material. For SnTe1±x matrices (where x = 0.0 or 0.016) composite specimens with 0-4 vol% SiC nanoparticle (SiCNP) additions, the elastic moduli (Young's modulus, shear modulus, and Poisson's ratio) were measured by resonant ultrasound spectroscopy from room temperature (RT) to 663 K. The effects of matrix composition and the SiCNP additions on the RT intercepts and the slopes of the elastic modulus as a function of temperature are also discussed.

Original languageEnglish
Pages (from-to)8244-8258
Number of pages15
JournalJournal of Materials Science
Volume48
Issue number23
DOIs
Publication statusPublished - Dec 1 2013

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ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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