Sintering behavior of (U,Ce)O $_{2}$ and (U,Pu)O $_{2}$

Nakamichi, Shinya ; Hirooka, Shun ; Sunaoshi, Takeo*; Kato, Masato ; Nelson, A.*; McClellan, K.*

Cerium dioxide has been used as a surrogate material for plutonium dioxide. Dorr et al reported the use of hyper-stoichiometric conditions causes the start of shrinkage of (U,Ce)O $_{2}$ at low temperature compared with the sintering in reducing atmosphere. However, the precise stoichiometry of the samples investigated was not controlled or otherwise monitored, preventing any quantitative conclusions regarding the similarities or differences between (U,Ce)O $_{2}$ and (U,Pu)O $_{2}$ . The motivation for the present work is therefore to compare the sintering behavior of MOX and the (U,Ce)O $_{2}$ MOX surrogates under controlled atmospheres to assess the role of oxygen defects on densification in both systems.

Language	:	English
Journal	:	Transactions of the American Nuclear Society
Volume	:	113
Number	:	1
Pages	:	p.617 - 618
Publication Year/Month	:	2015/10
Meeting title	:	2015 ANS Winter Meeting and Nuclear Technology Expo
Held date	:	2015/11
Location (city)	:	Washington, D.C.
Location (country)	:	U.S.A.
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Keywords	:	UO2; CeO2; PuO2; Sintering
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Article of JAEA R&D Review	:
Cooperating Institute	:	Los Alamos National Laboratory

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Registration No. : BB20150694
JAEA Abstracts No. : 44000079
Paper Submission No. : 16777

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Sintering behavior of (U,Ce)O and (U,Pu)O

Sintering behavior of (U,Ce)O $_{2}$ and (U,Pu)O $_{2}$