Oxygen chemical diffusion coefficients of (U, Pu)O $_{2-x}$

Watanabe, Masashi; Sunaoshi, Takeo*; Kato, Masato

The oxygen chemical diffusion coefficient in (U, Pu)O $_{2-x}$ was determined by thermo-gravimetry as functions of the Pu content, oxygen-to-metal ratio and temperature. The surface reaction was considered in the diffusion coefficient determination. The activation energy for the chemical diffusion coefficient was 60 kJ/mol and 65 kJ/mol, respectively, in (U $_{0.8}$ Pu $_{0.2}$ )O $_{2-x}$ and (U $_{0.7}$ Pu $_{0.3}$ )O $_{2-x}$ .

Language	:	English
Journal	:	Defect and Diffusion Forum
Volume	:	375
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Pages	:	p.84 - 90
Publication Year/Month	:	2017/05
Publisher	:	Materials Science and Engineering
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Paper URL	:	http://doi.org/10.4028/www.scientific.net/DDF.375.84 Read or search this article
Keywords	:	酸素化学拡散係数; 酸素不定比性; MOX燃料
Research Facility	:	プルトニウム燃料製造施設
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Registration No. : AA20160630
JAEA Abstracts No. : 45000722
Paper Submission No. : 18975

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