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The influence of alloying elements on the corrosion of Zr alloys

Research output: Contribution to journalJournal article

Published
  • B. D. C. Bell
  • S. T. Murphy
  • P. A. Burr
  • R. J. Comstock
  • J. M. Partezana
  • R. W. Grimes
  • M. R. Wenman
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<mark>Journal publication date</mark>04/2016
<mark>Journal</mark>Corrosion Science
Volume105
Number of pages8
Pages (from-to)36-43
Publication statusPublished
Original languageEnglish

Abstract

Density functional theory (DFT) and autoclave corrosion tests in 360 degrees C water were used to investigate the influence of Sb, Sc, Nb and Sn on the corrosion and hydrogen pick-up (HPU) of Zr-alloys. Sc was shown to have a strongly detrimental effect on alloy corrosion resistance. The Nb-Sb-Zr ternary alloy exhibited significantly improved corrosion resistance over Zr-Nb and ZIRLO, and had little measurable HPU after 195 days. The ratio of Sb'(zr)/Sb-zr(center dot). was shown to transition smoothly with applied space charge, implying Sb can act as a buffer to charge imbalance in the oxide layer. (C) 2016 Elsevier Ltd. All rights reserved.