Volume 12 - Summer and Autumn 2019                   ijmt 2019, 12 - Summer and Autumn 2019: 25-30 | Back to browse issues page

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akbari vakilabadi K, Khanzadi H. Investigation of Velocity Influence on Cathodic Polarization of Aluminum Alloys in 3.5% NaCl by Electrochemical Impedance Spectroscopy. ijmt. 2019; 12 :25-30
URL: http://ijmt.ir/article-1-652-en.html
1- Marine Faculty of Imam Khomeini Maritime Academy , Nowshahr,Iran
2- Marine Faculty of Imam Khomeini Maritime Academy , Nowshahr-,Iran,
Abstract:   (221 Views)
Aluminum–magnesium alloys are specially used in high speed boats, submarines, desalination systems, etc.  In this re-search the electrochemical impedance spectroscopy technique was utilized to study the flow accele-rated pitting corrosion behavior of this alloy in 3.5% NaCl solution. To do so, impedance spectra of the samples after 20h of exposure to the test solution at a rotation speeds were investigated. SEM (scanning electron microscopy) method was utilized to investigate the changes in the surface of the samples. Results indicated that under static and dynamic con-dition, the surface growth rate of the pits increases with time. Moreover, at -0.9 V upon altering the flow condition from static to dynamic, the surface growth rate of the pits and their surface fraction increases while the corrosion resistance of the passive layer is time dependent.
Full-Text [PDF 715 kb]   (50 Downloads)    
Type of Study: Research Paper | Subject: Ship Structure
Received: 2019/03/6 | Accepted: 2019/07/30

References
1. Davis, J. A. (1999). Corrosion of Aluminum and Aluminum Alloys. ASM International, Materials Park, OH. ISBN: 978-0-87170-629-4
2. Davis, J. A., & Gehring, G. A. (1975). The Effect of Velocity on the seawater Corrosion Behaviour of High Performance Ship Materials. Materials Performance, 14, 32-39. [DOI:10.1007/SpringerReference_9592]
3. F. J. Martin, G. T. Cheek, W. E. O. and P. M. N. (2005). Impedance Studies of the Passive Film on Aluminum. Corrosion Science, 47, 3187-3201. [DOI:10.1016/j.corsci.2005.05.058]
4. Gehring, G., & Peterson, M. (1981). Corrosion of 5456-H117 Aluminium in High Velocity Seawater. Corrosion Journal, 37, 232-242. [DOI:10.5006/1.3577276]
5. Gunderson, R., & Nisancioglu, K. (1990). Cathodic Protection of Aluminium in Seawater. Corrosion Journal, 46(4), 279-285. [DOI:10.5006/1.3585103]
6. Holtan, K. N. and H. (1979). Cathodic Polarization f Commercially Pure Aluminum. Corrosion Science, 19, 534-552. [DOI:10.1016/S0010-938X(79)80136-5]
7. Kim, S.-J., Jang, S.-K., Han, M.-S., Park, J.-C., Jeong, J.-Y., & Chong, S.-O. (2013). Mechanical and elec-trochemical characteristics in sea water of 5052-O aluminum alloy for ship. Transactions of Non-ferrous Metals Society of China, 23(3), 636-641. [DOI:10.1016/S1003-6326(13)62510-8]
8. Kim, S.-J., Kim, S.-K., & Park, J.-C. (2010). The corrosion and mechanical properties of Al alloy 5083-H116 in metal inert gas welding based on slow strain rate test. Surface and Coatings Technology, 205, S73-S78. [DOI:10.1016/j.surfcoat.2010.04.039]
9. Mansfeld, F. (1990). Electrochemical impedance spectroscopy (EIS) as a new tool for investigating methods of corrosion protection. Electrochimica Acta, 35(10), 1533-1544. [DOI:10.1016/0013-4686(90)80007-B]
10. Mansfeld, F., Lin, S., Kim, S., & Shih, H. (1987). Pitting andSurface Modification of SiC/Al. Corrosion Science, 27, 997-1001. [DOI:10.1016/0010-938X(87)90065-5]
11. Mansfeld, F., Lin, S., Kim, S., & Shih, H. (1989). Corrosion Protection of Al Alloys and Al-Based Metal Matrix Composites by Chemical Passivation. Corrosion Journal, 45, 615-630. [DOI:10.5006/1.3579314]
12. Meng, C., Zhang, D., Cui, H., Zhuang, L., & Zhang, J. (2014). Mechanical properties, intergranular corrosion behavior and microstructure of Zn modified Al-Mg alloys. Journal of Alloys and Com-pounds, 617(0), 925-932. [DOI:10.1016/j.jallcom.2014.08.099]
13. Ornek, D., Jayaraman, A., Wood, T. K., San, Z., Hsu, C. H., & Mansfeld, F. (2001). Pitting Corrosion Control Using Regenerative Biofilms on Aluminium 2024 in Artifical Seawater. Corrosion Science, 43, 2121-2133. [DOI:10.1016/S0010-938X(01)00005-1]
14. Park, D.-H., Choi, S.-W., Kim, J.-H., & Lee, J.-M. (2015). Cryogenic mechanical behavior of 5000- and 6000-series aluminum alloys: Issues on application to offshore plants. Cryogenics, 68, 44-58. [DOI:10.1016/j.cryogenics.2015.02.001]
15. Szklarska-Smialowska. (2012). Pitting Corrosion of Aluminum. Corrosion Science, 41, 1743-1764. [DOI:10.1016/S0010-938X(99)00012-8]

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