Oxygen potential of (Th $_{0.7}$ Ce $_{0.3}$ )O $_{2-x}$

Osaka, Masahiko ; Tanaka, Kosuke ; Miwa, Shuhei ; Kurosaki, Ken*; Uno, Masayoshi*; Yamanaka, Shinsuke*

Oxygen potentials of (Th $_{0.7}$ Ce $_{0.3}$ )O $_{2-x}$ were experimentally determined by means of thermogravimetric analysis as a function of non-stoichiometry at 1173 and 1273 K. Oxygen potentials of (Th $_{0.7}$ Ce $_{0.3}$ )O $_{2-x}$ at each temperature increased with increase of O/M ratio (= 2-x) and steep increases of the oxygen potentials toward O/M = 2 were observed. These characteristics are typical for non-stoichiometric fluorite-type actinides dioxides. The oxygen potentials of (Th $_{0.7}$ Ce $_{0.3}$ )O $_{2-x}$ were similar to those of CeOO $_{2-x}$ when they were plotted as a function of average Ce valence.

Language	:	English
Journal	:	Materials Research Society Symposium Proceedings, Vol.1215
Volume	:
Number	:
Pages	:	p.199 - 203
Publication Year/Month	:	2010/10
Meeting title	:	Materials Research Society 2009 Fall Meeting
Held date	:	2009/11
Location (city)	:	Boston
Location (country)	:	U.S.A.
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1557/PROC-1215-V18-04
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	AGF(照射燃料試験施設)
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	大阪大学

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Registration No. : BB20092658
JAEA Abstracts No. : 43000632
Paper Submission No. : 15730

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Oxygen potential of (ThCe)O

Oxygen potential of (Th $_{0.7}$ Ce $_{0.3}$ )O $_{2-x}$