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 language | English |
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Pages (from-to) | 1633-1638 |
Number of pages | 6 |
Journal | Corrosion Science |
Volume | 53 |
Issue number | 5 |
DOIs | |
State | Published - 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