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In situ synchrotron X-ray micro-tomography study of pitting corrosion in stainless steel |
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| Authors: | S Majid Ghahari Alison J Davenport Trevor Rayment Thomas Suter Jean-Philippe Tinnes Cristiano Padovani Joshua A Hammons Marco Stampanoni Federica Marone Rajmund Mokso |
| Affiliation: | aCollege of Engineering and Physical Sciences, University of Birmingham, UK;bDiamond Light Source Ltd., UK;cLaboratory for Corrosion and Materials Integrity, EMPA, Switzerland;dRadioactive Waste Management Directorate, Nuclear Decommissioning Authority, UK;eSwiss Light Source, Paul Scherrer Institute, Switzerland;fInstitute for Biomedical Engineering, University and ETH Zürich, Switzerland |
| Abstract: | Pitting corrosion of stainless steel has been investigated with high-resolution in situ X-ray microtomography. The growth of pits at the tip of stainless steel pins has been observed with 3D microtomography under different conditions of applied current and cell potential. The results demonstrate how pits evolve in stainless steel, forming a characteristic “lacy” cover of perforated metal. In addition, it is shown how the shape of pits becomes modified by MnS inclusions. |
| Keywords: | A Stainless steel C Pitting corrosion |
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