Fig. 1
From: Predicting long-term corrosion of metal alloys in physical infrastructure
Models proposed to represent development of corrosion loss with increased exposure time a Power Law. Case B < 1 proposed and derived originally by Tammann (1923). Widely used for atmospheric corrosion. Empirical data may yield B ≥ 1, b Non-linear smooth trend plus linear long-term trend. Used by various investigators for marine and for atmospheric corrosion, c Model proposed by Guedes Soares et al. that includes coating life and assumes that eventually the corrosion rate becomes zero, d Model proposed by Paik et al. that includes coating life and non-specific corrosion trends, generally similar to power law, e Model proposed by Qin and Cui that includes coating life and assumes that eventually the corrosion rate becomes zero, f Bi-modal, multi-phase model proposed by Melchers that macro-models corrosion processes including a long-term linear trend
