| Autor: |
Wan Nik, W. B., Sulaiman, O. O., Prawoto, Y., Ahmad, M. F., Rosliza, R. |
| Zdroj: |
Journal of Marine Technology & Environment; 2011, Vol. 2, p169-176, 8p, 1 Diagram, 4 Charts, 3 Graphs |
| Abstrakt: |
Marine corrosion and striking balance for efficient inhibitor remain a big challenge for maintainace of marine system and stucture. Bio material is reliable inhibitor for marine corrosion maintenance. Aluminum and its alloys exhibit corrosion resistance in many environments. This feature made them important materials with wide ranges of industrial and marine applications. Thus, with corrosion resistance, it still need some protection when introduced to the marine environment. It is because the marine environment is a very corrosive environment due to the presences of Natrium Chloride. Several methods have being introduced to overcome this problem. Among the methods introduced, the usages of corrosion inhibitor are very popular. This paper studies the use of vanillin as an inhibitor for aluminium alloy AA7619 in marine environment. This study determine the suitability and the inhibition efficiency of vanillin on aluminium AA7619 corrosion. There are two types of solution prepared which is seawater and seawater with vanillin added. The concentration of vanillin used was 20 mg/litre. These solutions were used as corrosion medium for the aluminium AA7619 immersion test. The immersion period was 42 days and the specimens characterization test were performed every seven days. The corrosion rate of the aluminium alloy and the corrosion inhibition of vanillin were determined by using weight loss method, potentiodynamic polarization scan and electrochemical impedance spectroscopy (EIS). The results shows that the presence of vanillin retards the rate of dissolution and thus the corrosion rate was decreased. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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