Oxygen chemical diffusion in hypo-stoichiometric MOX

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

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)416-419
Number of pages4
JournalJournal of Nuclear Materials
Issue number3
Publication statusPublished - 2009 Jun 1

ASJC Scopus subject areas

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


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