Room temperature mechanical properties of natural-mineral-based thermoelectrics

Xiaofeng Fan, Eldon D. Case, Xu Lu, Donald T. Morelli

Research output: Contribution to journalArticle

  • 14 Citations

Abstract

Low cost, highly efficient thermoelectric materials for waste heat recovery applications can be made by combining the naturally occurring thermoelectric mineral tetrahedrite (Cu10Zn2As4S13) and the synthetic compound Cu12Sb4S13. To better utilize this material in waste heat harvesting applications, it is essential to characterize the material's mechanical properties including elastic modulus, hardness, and fracture toughness. In this study, powders of Cu 10Zn2As4S13 were mixed with varying amounts of Cu12Sb4S13 and then densified by hot pressing. The room temperature mechanical properties were investigated as a function of (i) composition and (ii) ball milling time. Elastic moduli were measured using resonant ultrasound spectroscopy. Hardness and fracture toughness were determined by Vickers indentation technique.

LanguageEnglish (US)
Pages7540-7550
Number of pages11
JournalJournal of Materials Science
Volume48
Issue number21
DOIs
StatePublished - Nov 2013

Profile

Minerals
Mechanical properties
Fracture toughness
Elastic moduli
Hardness
Waste heat
Ball milling
Waste heat utilization
Hot pressing
Indentation
Powders
Temperature
Ultrasonics
Spectroscopy
Chemical analysis
Costs

ASJC Scopus subject areas

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

Cite this

Room temperature mechanical properties of natural-mineral-based thermoelectrics. / Fan, Xiaofeng; Case, Eldon D.; Lu, Xu; Morelli, Donald T.

In: Journal of Materials Science, Vol. 48, No. 21, 11.2013, p. 7540-7550.

Research output: Contribution to journalArticle

Fan, Xiaofeng ; Case, Eldon D. ; Lu, Xu ; Morelli, Donald T./ Room temperature mechanical properties of natural-mineral-based thermoelectrics. In: Journal of Materials Science. 2013 ; Vol. 48, No. 21. pp. 7540-7550
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