The speciation of niobium in the oxide layer of an irradiated Low-Tin ZIRLO nuclear material

J. Hawes, P. Warnicke, P. Burr, D. Ferreira Sanchez, D. Grolimund, J. Partezana, Y. L. Chiu, S. Abolhassani

Research output: Contribution to journalArticlepeer-review

Abstract

In this study the oxidation state of niobium, within the oxide layer of a low-tin ZIRLO1 irradiated in a nuclear reactor, is examined using synchrotron. The unique set up allows simultaneous acquisition of X-ray florescence (XRF) and X-ray diffraction (XRD) maps. A gradual oxidation and evolution of niobium is observed and quantified which is then compared with the information on the distribution of oxide phases revealed by XRD. The results are discussed with the aim to better understand the hydrogen uptake mechanism for this material, particularly the cause of the increased resistance to hydrogen uptake seen in niobium containing alloys.

Original languageEnglish
Article number109630
Number of pages12
JournalCorrosion Science
Volume190
Early online date16 Jun 2021
DOIs
Publication statusPublished - Sep 2021

Keywords

  • Hydrogen uptake
  • Irradiated
  • Niobium
  • XANES
  • XRD
  • Zirconium based fuel cladding

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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