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Oxygen Chemical Diffusion Coefficients of (U, Pu)O2-x

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Abstract:

The oxygen chemical diffusion coefficient in (U, Pu)O2-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 (U0.8Pu0.2)O2-x and (U0.7Pu0.3)O2-x.

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Periodical:

Defect and Diffusion Forum (Volume 375)

Pages:

84-90

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.375.84

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Online since:

May 2017

Authors:

Masashi Watanabe*, Takeo Sunaoshi, Masato Kato

Keywords:

(U, Pu)O2, Non-Stoichiometry, Oxygen Chemical Diffusion

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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