Synchrotron X-ray radiography studies of pitting corrosion of stainless steel: Extraction of pit propagation parameters

- Growth of 2D pits in stainless steel was measured with synchrotron radiography.
- Local current density around the pit perimeter was determined from interface velocity.
- The growth of pit depth is controlled by diffusion.
- Lateral pit growth is controlled by solution conductivity.
- Perforated metal covers on pits influence their growth and stability.