Room temperature elastic properties of gadolinia-doped ceria as a function of porosity

Xiaofeng Fan, Eldon D. Case, Qing Yang, Jason D. Nicholas

    Research output: Research - peer-reviewArticle

    • 12 Citations

    Abstract

    Gadolinia doped ceria (GDC) is commonly used in chemical reactors, gas sensors, gas separation membranes, and solid oxide fuel cells (SOFCs). In the present study, the room temperature elastic properties of GDC10 (Ce 0.9Gd0.1O1.95) were measured as a wide function of porosity for the first time. GDC10 specimens with volume fraction porosities ranging from 0.07 to 0.60 were produced by hard die pressing and sintering GDC10 powders in air at temperatures ranging from 825 to 1475 °C. The room temperature Young's modulus, shear modulus, bulk modulus and Poisson's ratio were measured using resonant ultrasound spectroscopy. The elastic moduli decreased exponentially with increasing porosity.

    LanguageEnglish (US)
    Pages6877-6886
    Number of pages10
    JournalCeramics International
    Volume39
    Issue number6
    DOIs
    StatePublished - Aug 2013

    Profile

    Gadolinium
    Cerium compounds
    Porosity
    Elastic moduli
    Temperature
    gadolinium oxide
    Chemical reactors
    Poisson ratio
    Solid oxide fuel cells (SOFC)
    Chemical sensors
    Volume fraction
    Sintering
    Ultrasonics
    Spectroscopy
    Membranes
    Powders
    Air
    Gases

    Keywords

    • B. Porosity
    • C. Mechanical properties
    • D. Ceria

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Process Chemistry and Technology
    • Electronic, Optical and Magnetic Materials
    • Surfaces, Coatings and Films
    • Materials Chemistry

    Cite this

    Room temperature elastic properties of gadolinia-doped ceria as a function of porosity. / Fan, Xiaofeng; Case, Eldon D.; Yang, Qing; Nicholas, Jason D.

    In: Ceramics International, Vol. 39, No. 6, 08.2013, p. 6877-6886.

    Research output: Research - peer-reviewArticle

    Fan, Xiaofeng ; Case, Eldon D. ; Yang, Qing ; Nicholas, Jason D./ Room temperature elastic properties of gadolinia-doped ceria as a function of porosity. In: Ceramics International. 2013 ; Vol. 39, No. 6. pp. 6877-6886
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