Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
권호 표지
DOI QR코드

DOI QR Code

Investigation on electrochemical performance of Al anode material for marine growth prevention system

  • Kim, Seong-Jong (Division of Marine Engineering, Mokpo Maritime University) ;
  • Jang, Seok-Ki (Division of Marine Engineering, Mokpo Maritime University) ;
  • Han, Min-Su (Division of Marine Engineering, Mokpo Maritime University) ;
  • Lee, Seung-Jun (Division of Marine Engineering, Mokpo Maritime University)
  • Received : 2014.06.20
  • Accepted : 2014.08.05
  • Published : 2014.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

Aluminum anode of marine growth prevention system for ship is installed in seachest or sea water strainer. The Al anode is connected to a control panel that feeds a current to the anode. The dissolved ions produced by the anode are transferred in sea water, spreads through the sea water pipe system and creates a protective film in the pipelines. Thereby, corrosion in pipeline system significantly is reduced. In application on condition as a steel ship, the big accident can be caused by the corrosion. Accordingly, in this research, we evaluated influence of applied current and flow velocity on electrochemical characteristics of Al anode for marine growth prevention system (MGPS). Based on the results of the erosion-cavitation experiments, cavitation rate increased greatly until 120 min. of the experimental time and decreased a little at the point of 180 min. where pit grew and merging occurred but showed a tendency of steadily increasing consumption rates. Based on the results of the Tafel analysis, compared to static states, corrosion current densities show a rapidly increasing tendency when flow occurred.

Keywords

References

  1. U. J. Lim, H. K. Jeong, K. T. Shim, and H. O. Park, "The effect of flow velocity on corrosion characteristics of A1-brass tube," Proceedings of the Korea Society of Marine Engineering Fall Conference, pp. 147-150, 2003 (in Korean).
  2. H. R. Copson, "Effects of velocity on corrosion," Corrosion, vol. 16, no. 2, pp. 130-136, 1960.
  3. T. Sydberger and U. Lotz, "Relation between mass transfer and corrosion in a turbulent pipe flow," Journal of Electrochemical Society, vol. 129, no. 2, pp. 276-283, 1982. https://doi.org/10.1149/1.2123812
  4. S. R. De Sanchez and D. J. Schiffrin, "The use of high speed rotating disc electrodes for the study of erosion- corrosion of copper base alloys in sea water," Corrosion Science, vol. 28, no. 2, pp. 141-151, 1988. https://doi.org/10.1016/0010-938X(88)90091-1
  5. L. L. Shreir, Corrosion Handbook Vol. 1, Newnes-Butter Worths, pp. 3-31, 1979.
  6. S. J. Kim and J. Y. Ko, "Investigation on optimum protection potential of high-strength Al alloy (5456-H116) for application in ships," Journal of The Korea Society of Marine Engineering, vol. 30, no. 1, pp. 157-169, 2006 (in Korean).
  7. S. J. Kim, D. H. Kim, M. H. Lee, K. J. Kim, and K. M. Moon, "A study on the influence of Al alloy sacrificial anode efficiency due to marine environmental variation," Journal of Ocean Engineering and Technology, vol. 9, no. 2, pp. 106-111, 2000.
  8. R. J. K. Wood and S. A. Fry, "The synergistic effect or cavitation erosion and corrosion for copper and Cupro-Nickel in seawater," Journal of Fluids Engineering, vol. 111, no. 3, 271-277, 1989. https://doi.org/10.1115/1.3243641