2007, Fritz Haber Institute of the Max Planck Society
Rotermund, Harm Hinrich, Dornhege, Monika, Punckt, Christian
We present in situ real-time observations of pitting corrosion as it spreads across the surface of stainless steel in an electrolytic solution. By applying simultaneously two different imaging methods, i.e. ellipsomicroscopy and contrast-enhanced microscopy, the correlation between oxide film weakening and the nucleation and reactivation of individual pits is examined. The existence of front propagation as a component of the transition to pitting corrosion shows that characteristics of this process are consistent with the behavior of stochastic reaction-diffusion systems .