Thermal and mechanical properties of CeO2

Suzuki, Kiichi; Kato, Masato; Sunaoshi, Takeo; Uno, Hiroki; Carvajal-Nunez, Ursula; Nelson, Andrew T.; McClellan, Kenneth J.

doi:10.1111/jace.16055

Title: Thermal and mechanical properties of CeO₂

Journal Article · 06 September 2018 · Journal of the American Ceramic Society

DOI: https://doi.org/10.1111/jace.16055 · OSTI ID:1469554

^[1]; Kato, Masato ^[1]; Sunaoshi, Takeo ^[2]; Uno, Hiroki ^[2];

^[3];

^[3]

Japan Atomic Energy Agency (JAEA), Ibaraki (Japan)
Inspection Development Company, Ibaraki (Japan)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Abstract The thermal and mechanical properties of cerium dioxide (CeO ₂ ) were assessed using a range of experimental techniques. The oxygen potential of CeO ₂ was measured by the thermogravimetric technique, and a numerical fit for the oxygen potential of CeO ₂ is derived based on defect chemistry. Mechanical properties of CeO ₂ were obtained using sound velocity measurement, resonant ultrasound spectroscopy and nanoindentation. The obtained mechanical properties of CeO ₂ are then used to evaluate the Debye temperature and Grüneisen constant. The heat capacity and thermal conductivity of CeO ₂ were also calculated using the Debye temperature and the Grüneisen constant. Finally, the thermal conductivity was calculated based upon laser flash analysis measurements performed on pellets fabricated using a range of feedstock purities to resolve discrepancies in the existing literature.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Nuclear Energy (NE); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-06NA25396; DE‐AC52‐06NA25396

OSTI ID:: 1469554

Alternate ID(s):: OSTI ID: 1472144

Report Number(s):: LA-UR-18-23161

Journal Information:: Journal of the American Ceramic Society, Vol. 102, Issue 4; ISSN 0002-7820

Publisher:: American Ceramic SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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