A general model for predicting the occurrence of localized corrosion in chemical process streams is described. The model predicts the repassivation and corrosion potentials based on input chemistry of a system. The model predictions are compared to experimental data. Initial data from a validation study using a multielectrode array sensor at a process plant is described.
Keywords: localized corrosion, stainless steel, nickel-base alloys, repassivation potential, corrosion potential, monitoring, multielectrode array sensor