An innovative, electrochemical accelerated test has been developed that can predict long-term corrosion behavior. Immersion test in substitute ocean water for 90 days was performed to examine validity for this accelerated aging technique. As a result,...
An innovative, electrochemical accelerated test has been developed that can predict long-term corrosion behavior. Immersion test in substitute ocean water for 90 days was performed to examine validity for this accelerated aging technique. As a result, the technique induced formation of corrosion product and weight loss within 24 hours that were similar to those obtained naturally from immersion test for 90 days. This indicates that short-term accelerated aging test was in good qualitative and quantitative agreement with long-term immersion test. X-ray diffraction [XRD] analyses revealed that corrosion product formed in substitute ocean water was mainly composed of magnetite[Fe_3O_4]. Based on this experimental result, the lifetime of structural steel submerged in seawater for 60 years was predicted using the accelerated aging technique.