Abstract
The corrosion behaviour of 316L stainless steel was studied in the concentrated artificial seawater at 72°C, i.e., the simulated low temperature-multi effect distillation environments, by using electrochemical measurement techniques. The corrosion state changes from spontaneous passivation to pitting after about 1150h of immersion. Pitting corrosion is under mixed control of charge transfer and diffusion processes in the long-term immersion. The salt deposits retard the diffusion of oxygen to the metal surface. The pit depth only reaches about 38μm after one year of immersion due to the alloying effect of Mo, low dissolved oxygen levels and weak occlusion states.
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