The oxidation kinetics and the structure of the oxide film on Zircaloy before and after the kinetic transition

T. Arima, T. Masuzumi, H. Furuya, K. Idemitsu, Y. Inagaki

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Oxidation kinetics of Zircaloy-4 have been measured using a micro-balance technique in CO-CO2 gas mixtures between 450°C and 600°C. Oxidation kinetics of Zircaloy-4 obeyed a cubic rate law with time at 450-600°C up to 24 h. At 600°C, the kinetic transition occurred after about 36 h. After the transition, oxidation kinetics obeyed a linear rate law. X-ray diffraction patterns for the samples oxidized at 600°C showed that the volume fraction of tetragonal phase of zirconia decreased with time until the kinetic transition occurred and was almost constant after that. In addition, stresses in the oxide films were found to be larger for the pre-transition samples than for the post-transition ones.

Original languageEnglish
Pages (from-to)148-153
Number of pages6
JournalJournal of Nuclear Materials
Volume294
Issue number1-2
DOIs
Publication statusPublished - Apr 2001

All Science Journal Classification (ASJC) codes

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

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