Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지

Evaluation of Anticorrosive Performance of Organic Coatings Subjected to Cyclic Wet-dry Exposure

흡 .탈수 반복 환경하에서의 유기도막의 방식성 평가

  • 박진환 (부경대학교 응용화학공학부) ;
  • 이근대 (부경대학교 응용화학공학부) ;
  • 전호환 (부산대학교 첨단조선공학연구센타)
  • Published : 2004.02.01
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Abstract

Organic coatings are widely used to control of the corrosion of a steel structure. The water in coatings may cause the coatings to swell, leading to the degradation of the coatings. In addition, water affects the permeation of oxygen and other corrosive agents, and consequently, the presence of such substances at coating-metal interface promotes corrosion of the metal substrate. In this study, the anticorrosive properties of 4 types of coating, such as epoxy-epoxy, epoxy-urethane, urethane-epoxy, urethane-urethane, were evaluated. The evaluation tests were conducted under cyclic water-absorption/desorption conditions, consisting of alternative exposure to diluted 0.001M-LiCl(a$H_2O$≒1) and concentrated 10M-LiCl(a$H_2O$≒0.15). The anticorrosive performance of coatings was found to decrease in the order of urethane-urethane > urethane-epoxy > epoxy-epoxy coating.

Keywords

References

  1. Corrosion v.49 Water Transport in Organic Coatings Bellucci,F.;Nicodemo,L.
  2. J. Appl. Chem. v.4 Electrical Measurements in the Study of Immersed Paint Coatings on Metal Brasher,D.M.;Kingsbury,A.H.
  3. Protective Coatings Hare,C.H.
  4. Corros. Sci. v.29 Evaluation of Corrosion Performance of Coated Steel by the Impedance Technique Pebere,N.;Picaud,T.;Duprat,M.;Dabosi,F.
  5. J. Oil. Col. Chem. Assoc. v.54 Water Transport through Paint Films Perera,D.Y.;Heertjes,P.M.
  6. J. Electrochem. Soc. v.140 Using Electrochemical Impedance Spectroscopy as a Tool for Organic Coating Solute Saturation Monitoring Popov,B.N.;Alwohaibi,M.A.;White,R.E.
  7. Electrchimica Acta v.38 Corrosion Prediction in Complex Environments Using Electrochemical Impedance Spectroscopy Silverman,D.C.
  8. J. Electrochem. Soc. v.136 Electrochemical Impedance of Organic Coated Steel Scully,J.R.
  9. Electrochimica Acta v.39 The Determination of Coating Performance Using Electrochemical Impedance Spectroscopy Van Westing,E.P.M.;Ferrari,G.M.;De Wit,J.H.W.
  10. Corros. Sci. v.32 The Application of Impedance Spectroscopy to Study the Uptake of Sodium Chloride Solution in Painted Metals Walter,G.W.