Inter-diffusion study of actinides in a MOX diffusion couple

Matsumoto, Taku; Arima, Tatsumi*; Inagaki, Yaohiro*; Idemitsu, Kazuya*; Kato, Masato ; Morimoto, Kyoichi ; Uno, Hiroki*; Tamura, Tetsuya*

O/M ratio dependence of inter-diffusion coefficient of U and Pu at 1873 K was evaluated from MOX and UO diffusion couple. The diffusion coefficient at O/M = 2.00 was about two orders of magnitude greater than that at O/M = 1.96. In addition, it was observed that grain boundary diffusion is so large compared to bulk one for O/M = 2.00. On the other hand, GB and bulk diffusions were not clearly observed for O/M = 1.96.

Language	:	Japanese
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Meeting title	:	日本原子力学会2014年秋の大会
Held date	:	2014/09
Location (city)	:	京都
Location (country)	:	日本
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Keywords	:	相互拡散; MOX燃料; 粒界拡散; 粒内拡散
Research Facility	:	プルトニウム燃料製造施設
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Registration No. : BB20140775
JAEA Abstracts No. :
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