Observation of the effect of surface roughness on the oxidation of Zircaloy-4

P. Platt, V. Allen, M. Fenwick, M. Gass, M. Preuss

Research output: Contribution to journalShort SurveyResearchpeer-review

19 Citations (Scopus)

Abstract

Zirconium alloys are used as fuel cladding in light water reactors. Surface preparation techniques that might impair oxidation resistance would limit the lifetime of the cladding and therefore prevent higher burn-up of fuels. The work presented here investigates the impact of surface roughness on the oxidation kinetics of Zircaloy-4 in 400. °C steam for exposures up to 275 days. The work shows well defined differences in oxidation kinetics between sample preparations following ~84 days oxidation. Scanning electron microscopy (SEM) and image analysis of samples in cross section allows for an assessment of the variation in surface roughness between samples at different stages of oxidation.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalCorrosion Science
Volume98
DOIs
Publication statusPublished - Sep 2015
Externally publishedYes

Keywords

  • High temperature corrosion
  • Oxidation
  • SEM
  • Zirconium

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