발간논문

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Vol.40, No.3, 302 ~ 309, 2002
Title
Research Papers / Environment : Life Prediction on Structural Steel Submerged in Seawater by Electrochemically Accelerated aging technique
유용재Yong Jae Yu,김정구Jung Gu Kim
Abstract
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.
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