Browse > Article
http://dx.doi.org/10.14773/cst.2020.19.6.288

Investigation of Optimum Cathodic Protection Potential to Prevent Erosion with a Flow Rate of AA5083-H321 for Marine Vessels  

Chong, Sang-Ok (Division of Maritime, DNV GL)
Park, Il-Cho (Division of Cadet Training, Mokpo Maritime University)
Kim, Seong-Jong (Division of Marine Engineering, Mokpo Maritime University)
Publication Information
Corrosion Science and Technology / v.19, no.6, 2020 , pp. 288-295 More about this Journal
Abstract
This study investigated the erosion-corrosion characteristics of 5038-H321 aluminum alloy in a natural seawater solution through various electrochemical experiments and flow rate parameters. Cathodic polarization experiments were conducted at flow rates ranging from 4 to 12 knots. Considering the concentration polarization section representing a relatively low current density, the range of the potentiostatic experiment was determined to be -1.6 to -1.0 V. The potentiostatic experiment was conducted at various potentials for 180 minutes in seawater. After the experiment, the corrosion characteristics were evaluated by observing surface morphology and measuring surface roughness. As a result, as the applied potential was lower, the amount of calcareous deposits increased and the roughness tended to increase. On the other hand, it was confirmed that the roughness was larger in the static condition than the flow rate condition due to the influence of the flow velocity. Variations in the chemical composition with flow rate variations were analyzed by energy-dispersive spectroscopy (EDS). In conclusion, the cathodic potential of AA5083-H321 in seawater was determined to be -1.0 V.
Keywords
Erosion-corrosion; Aluminium alloy; Seawater; Flow rate;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 S. Y. Cho, H. G. Na, H. R. Cho, J. J. Moon, T. J. Ahn, and H. Jang, Corros. Sci. Tech., 19, 109 (2020). https://doi.org/10.14773/CST.2020.19.3.109   DOI
2 H. Ezuber, A. El-Houd and F. El-Shawesh, Mater. Des., 29, 801 (2008). https://doi.org/10.1016/j.matdes.2007.01.021   DOI
3 S. R. Dehghani, Y. S. Muzychka, and G. F. Naterer, Cold Reg. Sci. Technol., 127, 1 (2016). https://doi.org/10.1016/j.coldregions.2016.03.010   DOI
4 G. A. Gehring Jr. and M. H. Peterson, Corrosion, 37, 232 (1981). https://doi.org/10.5006/1.3577276   DOI
5 Jefa Rudder, Stray current corrosion of ship, (2018). https://www.jefa.com/install/electro.htm
6 I. C. Park and S. J. Kim, J. Korean Inst. Surf. Eng., 49, 349 (2016). https://doi.org/10.5695/JKISE.2016.49.4.349   DOI
7 Y. B. Kim and S. J. Kim, Corros. Sci. Tech., 18, 292 (2019). https://doi.org/10.14773/cst.2019.18.6.292   DOI
8 S. J. Kim, S. K. Jang, M.S. Han, J. C. Park, J. Y. Jeong, and S. O. Chong, Transaction of Nonferrous Metals Society of China, 23, 636 (2013). https://doi.org/10.1016/S1003-6326(13)62510-8   DOI
9 J. S. Jeon, D. H. Jeon, and M. H. Lee, J. Corros. Sci. Soc. of Kor., 15, 3 (1986). https://www.j-cst.org/opensource/pdfjs/web/pdf_viewer.htm?code=J00150400003
10 E. McCafferty, Introduction to Corrosion Science, Springer Science & Business Media, New York (2010). https://doi.org/10.1007/978-1-4419-0455-3
11 S. L. Wolfson and W. H. Hartt, Corrosion, 37, 70 (1981). https://doi.org/10.5006/1.3593848   DOI
12 S. J. Lee, M. S. Han, S. K. Jang, and S. J. Kim, Corros. Sci. Tech., 14, 226 (2015). https://doi.org/10.14773/cst.2015.14.5.226   DOI
13 H. J. Ryu and M. H. Lee, J. Corros. Sci. Soc. of Kor., 29, 240 (2000). http://www.j-cst.org/opensource/pdfjs/web/pdf_viewer.htm?code=J00290400240
14 W. H. Hartt, C. H. Culberson, and S. W. Smith, Corrosion, 40, 609 (1984). https://doi.org/10.5006/1.3581927   DOI
15 K. E. Mantel, W. H. Hartt, and T. Y. Chen, Corrosion, 48, 489 (1992). https://doi.org/10.5006/1.3315965   DOI
16 C. J. Li and M. Du, RSC Adv., 7, 28819 (2017). https://doi.org/10.1039/C7RA03709K   DOI