Wet oxidation of stainless steels: New insights into hydrogen ingress

M. P. Brady, M. Fayek, J. R. Keiser, H. M. Meyer, K. L. More, L. M. Anovitz, D. J. Wesolowski, D. R. Cole

Research output: Contribution to journalLetterpeer-review

24 Scopus citations

Abstract

It is well established that hydrogen derived from water vapor can penetrate oxidizing alloys with detrimental effect. However, the complexities of tracking hydrogen in these materials have prevented the direct profiling of hydrogen ingress needed to understand these phenomena. Here we report hydrogen profiles in industrially-relevant alumina- and chromia-forming steels correlated with the local oxide-metal nano/microstructure by use of SIMS D2O tracer studies and experimental protocols to optimize D retention. The D profiles unexpectedly varied markedly among the alloys examined, which indicates mechanistic complexity but also the potential to mitigate detrimental water vapor effects by manipulation of alloy chemistry.

Original languageEnglish
Pages (from-to)1633-1638
Number of pages6
JournalCorrosion Science
Volume53
Issue number5
DOIs
StatePublished - May 2011

Funding

The authors thank P.F. Tortorelli, B.A. Pint, K. Unocic, and A. Vande Put for extensive discussions and helpful comments on this manuscript. This work was funded by the United States Department of Energy (USDOE), Laboratory Directed Research and Development Program , and a Natural Sciences and Engineering Research Counsel (NSERC) discovery grant, Canadian Foundation for Innovation (CFI) and the Canada Research Chair (CRC) programs. Additional funding and collaboration with the SHaRE User Facility at ORNL is also acknowledged.

Keywords

  • A. Stainless steel
  • B. SIMS
  • B. STEM
  • B. XPS
  • C. Hydrogen permeation
  • C. Oxidation

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