Thermal and mechanical properties of CeO $_{2}$

Suzuki, Kiichi ; Kato, Masato ; Sunaoshi, Takeo*; Uno, Hiroki*; Carvajal-Nunez, U.*; Nelson, A. T.*; McClellan, K. J.*

The fundamental properties of 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 Gruneisen constant. The heat capacity and thermal conductivity of CeO $_{2}$ were also calculated using the Debye temperature and the Gruneisen constant. Finally, the thermal conductivity was calculated based upon laser flash analysis measurements. This result demonstrates that the thermal conductivity has strong dependence upon material purity.

Language	:	English
Journal	:	Journal of the American Ceramic Society
Volume	:	102
Number	:	4
Pages	:	p.1994 - 2008
Publication Year/Month	:	2019/04
Meeting title	:
Held date	:
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Patent information	:
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Paper URL	:	https://doi.org/10.1111/jace.16055
DOI for research data	:
Keywords	:	CeO $_{2}$ ; Oxygen Potential; Elastic properties; Heat Capacity; Thermal Conductivity
Research Facility	:	プルトニウム燃料製造施設
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	Los Alamos National Laboratory

Accesses	:	- Accesses
Web of Science® Times Cited Count	:	Times Cited Count： If you would like to get the latest times cited, please access the Web of Science®. http://www.webofknowledge.com/wos
InCites™	:	Percentile:90.42 Category:Materials Science, Ceramics
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Registration No. : AA20180033
JAEA Abstracts No. : 47001008
Paper Submission No. : 21645

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