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: Contribution to journalArticle

  • 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
Chemical reactors
Poisson ratio
Solid oxide fuel cells (SOFC)
Chemical sensors
Powders
Volume fraction
Sintering
Gases
Ultrasonics
Spectroscopy
Membranes
gadolinium oxide
Air

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: Contribution to journalArticle

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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