Abstract
Atmospheric corrosion of stainless steel can take place when airborne salt particles deposit on the metal surface, formingdroplets when the relative humidity (RH) reaches a critical value: the deliquescence relative humidity of the salt. Most workto date has focused on single salts such as MgCl2 or NaCl. In the present work, the effect of mixed salts is investigated at 45% RH, above the deliquescence relative humidityof MgCl2 but below that of NaCl. Dish-shaped pits were found in pure MgCl2 solutions and mixed solutions. Crevice corrosion takes place under NaCl crystals. This is shown both with ex situ measurementsand in situ time-dependent measurements using X-ray microtomography, where pit growth was also monitored.
Original language | English |
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Pages (from-to) | C3010-C3014 |
Journal | Journal of the Electrochemical Society |
Volume | 166 |
Issue number | 11 |
DOIs | |
Publication status | Published - 9 Jan 2019 |
Keywords
- Corrosion
- Atmospheric corrosion
- Stainless Steel
- X-Ray Diffraction