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Evaluation of Life Time for Anti-Corrosive Methods for Marine Steel Sheet by Cyclic Corrosion Test  

Park, J.W. (Reaserch Institute of Industrial Science & Technology, Ulsan Laboratory)
Lee, J.G. (Reaserch Institute of Industrial Science & Technology, Steel Structural Laboratory)
Lee, K.W. (Reaserch Institute of Industrial Science & Technology, Ulsan Laboratory)
Kim, J.H. (Reaserch Institute of Industrial Science & Technology, Ulsan Laboratory)
Jung, M.K. (Korea Institute of Construction Technology, Earth Structure & Foundation Engineering Research Division)
Lee, J.H. (Korea Institute of Construction Technology, Earth Structure & Foundation Engineering Research Division)
Publication Information
Corrosion Science and Technology / v.8, no.6, 2009 , pp. 243-250 More about this Journal
Abstract
When a steel sheet pipe applied to marine environment, an anti-corrosive coating should be treated to obtain long-term life-time for steels, especially, splash zone. Although anti-corrosive property of coatings is required to be tested in real marine environment, it is difficult because of long test time such as 20 years or more time. Therefore, we used cyclic corrosion tester in a laboratory, which has similar conditions with salt-dry-wet process such as real marine environment. Anti-corrosive properties of the coatings and two steels were tested their anti-corrosive properties under cyclic corrosion test conditions(KS D ISO 14993) and the results were compared with estimate life-time in real marine environment. According to cyclic corrosion test, accelerated corrosive factor of each anti-corrosive coating was investigated accelerated corrosive factor from impedance with EIS method. Accelerated corrosive factor of type SS400 carbon steel and A690 was also investigated their accelerated corrosive factor from the regression curves of weigh loss results. One of the anti-corrosive coatings showed about 50 years life-time compared with standard sample life-time. Carbon steel SS400 showed from 0.1 mm/yr to 0.06 mm/yr as its corrosion rate.
Keywords
cyclic corrosion test; anti-corrosive coating; EIS; accelerated corrosion factor; estimate life-time;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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