Projects per year
Abstract
The effect of nitrate on the iron dissolution in artificial corrosion pits in chloride-containing solutions has been studied with in-situ synchrotron X-ray diffraction and ex-situ Raman spectroscopy. A black layer containing Fe3C and carbon was found in the pit in pure 1 M HCl at 0.1 V(Ag/AgCl), but at higher voltages up to 1 V(Ag/AgCl), the black layer was not observed and Fe3C was not detected. The dissolution of Fe3C at low potentials may be inhibited by a carbon layer. In the presence of nitrate, the black layer containing Fe3C was present at all the voltages tested, and current fluctuations were observed and found to be potential-dependent, with greater fluctuations at higher voltages. After dissolution in 1 M HCl, the metal surface appeared slightly roughened with some small cavities, but the surface became crystallographically etched after dissolution in 1 M HCl and 50 mM NaNO3.
Original language | English |
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Pages (from-to) | C243-C250 |
Journal | Journal of the Electrochemical Society |
Volume | 162 |
Issue number | 6 |
DOIs | |
Publication status | Published - Mar 2015 |
ASJC Scopus subject areas
- Electrochemistry
- Electronic, Optical and Magnetic Materials
- Materials Chemistry
- Surfaces, Coatings and Films
- Renewable Energy, Sustainability and the Environment
- Condensed Matter Physics
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Dive into the research topics of 'In-situ synchrotron studies of the effect of nitrate on iron artificial pits in chloride solutions II. On the effect of carbon'. Together they form a unique fingerprint.Projects
- 1 Finished
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Microfocus Synchrotron X-Ray Studies of Localised Corrosion
Rayment, T. (Principal Investigator) & Davenport, A. (Co-Investigator)
Engineering & Physical Science Research Council
5/09/07 → 4/09/11
Project: Research Councils