Bubble swelling of UO $_{2}$ by helium release

Matsunaga, Junji*; Kashibe, Shinji*; Serizawa, Hiroyuki ; Nakajima, Kunihisa ; Iwai, Takashi

Variation of microstructure of UO $_{2}$ by precipitation of helium was examined using FIB and FE-TEM. The swelling accompanied by the formation of a gas bubble was evaluated. The number of helium gas bubble increased remarkably at the temperature more than 1300 $^{circ}$ C. The formation of a tunnel was observed in the grain boundary after the heat treatment at 1700 $^{circ}$ C.

Language	:	Japanese
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Meeting title	:	日本原子力学会2011年秋の大会
Held date	:	2011/09
Location (city)	:	北九州
Location (country)	:	日本
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Keywords	:	no keyword
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Cooperating Institute	:	日本核燃料開発

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Registration No. : BB20111239
JAEA Abstracts No. :
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Bubble swelling of UO by helium release

Bubble swelling of UO $_{2}$ by helium release