Oxygen chemical diffusion in hypo-stoichiometric MOX

Masato Kato; Kyoichi Morimoto; Tetsuya Tamura; Takeo Sunaoshi; Kenji Konashi; Shigenori Aono; Motoaki Kashimura

doi:10.1016/j.jnucmat.2009.02.018

Oxygen chemical diffusion in hypo-stoichiometric MOX

Masato Kato, Kyoichi Morimoto, Tetsuya Tamura, Takeo Sunaoshi, Kenji Konashi, Shigenori Aono, Motoaki Kashimura

International Research Center for Nuclear Materials Science

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

Kinetics of the oxygen-to-metal ratio change in (U_0.8Pu_0.2)O_2-x and (U_0.7Pu_0.3)O_2-x was evaluated in the temperature range of 1523-1623 K using a thermo-gravimetric technique. The oxygen chemical diffusion coefficients were decided as a function of temperature from the kinetics of the reduction process under a hypo-stoichiometric composition. The diffusion coefficient of (U_0.7Pu_0.3)O_2-x was smaller than that of (U_0.8Pu_0.2)O_2-x. No strong dependence was observed for the diffusion coefficient on the O/M variation of samples.

Original language	English
Pages (from-to)	416-419
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	389
Issue number	3
DOIs	https://doi.org/10.1016/j.jnucmat.2009.02.018
Publication status	Published - 2009 Jun 1

ASJC Scopus subject areas

Nuclear and High Energy Physics
Materials Science(all)
Nuclear Energy and Engineering

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10.1016/j.jnucmat.2009.02.018

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title = "Oxygen chemical diffusion in hypo-stoichiometric MOX",

abstract = "Kinetics of the oxygen-to-metal ratio change in (U0.8Pu0.2)O2-x and (U0.7Pu0.3)O2-x was evaluated in the temperature range of 1523-1623 K using a thermo-gravimetric technique. The oxygen chemical diffusion coefficients were decided as a function of temperature from the kinetics of the reduction process under a hypo-stoichiometric composition. The diffusion coefficient of (U0.7Pu0.3)O2-x was smaller than that of (U0.8Pu0.2)O2-x. No strong dependence was observed for the diffusion coefficient on the O/M variation of samples.",

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AU - Kato, Masato

AU - Morimoto, Kyoichi

AU - Tamura, Tetsuya

AU - Sunaoshi, Takeo

AU - Konashi, Kenji

AU - Aono, Shigenori

AU - Kashimura, Motoaki

PY - 2009/6/1

Y1 - 2009/6/1

N2 - Kinetics of the oxygen-to-metal ratio change in (U0.8Pu0.2)O2-x and (U0.7Pu0.3)O2-x was evaluated in the temperature range of 1523-1623 K using a thermo-gravimetric technique. The oxygen chemical diffusion coefficients were decided as a function of temperature from the kinetics of the reduction process under a hypo-stoichiometric composition. The diffusion coefficient of (U0.7Pu0.3)O2-x was smaller than that of (U0.8Pu0.2)O2-x. No strong dependence was observed for the diffusion coefficient on the O/M variation of samples.

AB - Kinetics of the oxygen-to-metal ratio change in (U0.8Pu0.2)O2-x and (U0.7Pu0.3)O2-x was evaluated in the temperature range of 1523-1623 K using a thermo-gravimetric technique. The oxygen chemical diffusion coefficients were decided as a function of temperature from the kinetics of the reduction process under a hypo-stoichiometric composition. The diffusion coefficient of (U0.7Pu0.3)O2-x was smaller than that of (U0.8Pu0.2)O2-x. No strong dependence was observed for the diffusion coefficient on the O/M variation of samples.

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Oxygen chemical diffusion in hypo-stoichiometric MOX

Abstract

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