Room temperature mechanical properties of natural-mineral-based thermoelectrics

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

    Research output: Research - peer-reviewArticle

    • 13 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
    Temperature
    Fracture toughness
    Elastic moduli
    Hardness
    Waste heat
    Ball milling
    Waste heat utilization
    Hot pressing
    Indentation
    Powders
    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: Research - peer-reviewArticle

    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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