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Hyperfine Interactions

, 239:21 | Cite as

The influence of reactor irradiation on the oxidation state of tin in Zr-0.76Fe-1.6Sn

  • Vladimir P. FilippovEmail author
  • A. B. Bateev
  • Yu. A. Lauer
  • Andrew F. Dykhuis
  • Michael P. Short
Article
  • 52 Downloads
Part of the following topical collections:
  1. Proceedings of the International Conference on the Applications of the Mössbauer Effect (ICAME 2017), Saint-Petersburg, Russia, 3-8 September 2017

Abstract

The oxidation states of minor alloying elements in Zircaloys often determine their resistance to corrosion, especially in nuclear reactors. In particular, tin is of interest because of its near ubiquitous use in earlier Zircaloys. To study changes in the oxidation state of tin under irradiation, specimens of Zr-0.76Fe-1.6Sn were corroded at similar conditions in an autoclave and in a nuclear reactor. Corrosion rates were found to be significantly accelerated following irradiation compared to those in the autoclave. Mössbauer spectroscopy revealed that in both the autoclave conditions and reactor conditions, a combination of tetravalent, divalent, and elemental (β-Sn) tin particles are formed during the initial corrosion processes. The kinetics of both the change in tin oxidation state and the corrosion rate in-reactor are greatly accelerated, pointing to the effect of irradiation driving tin into solution more quickly.

Keywords

Zirconium alloys Reactor irradiation Tin oxidation state Mössbauer effect 

Notes

Acknowledgements

The work was financially supported by MEPhI’s Competitiveness Program. A. F. Dykhuis and M. P. Short acknowledge funding from the Consortium for the Advanced Simulation of Light Water Reactors (CASL), a U.S. Department of Energy (DOE) Energy Innovation Hub.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)MoscowRussia
  2. 2.Department of Nuclear Science and EngineeringMassachusetts Institute of TechnologyCambridgeUSA

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