Corrosion Behaviour of Al Alloys in Sea Water

Journal Article · Thu Mar 11 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3377892· OSTI ID:21371700

Kamarudin, S R. M.; Daud, M; Muhamad, A; Sattar, M S ^[1]; Daud, A R ^[2]

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1. Malaysian Nuclear Agency, Bangi, 43000 Kajang (Malaysia)
2. Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi (Malaysia)

The electrochemical behaviour of aluminum (Al) alloys in seawater medium was investigated using potentiodynamic technique, complemented by Scanning Electron Microscopy (SEM) and EDAX. SEM was used to characterize the corroded surface and to observe the extent of corrosion attack on the Al alloys after tested in seawater. EDAX analysis was used to identify elements present on the specimen surface. The results indicate that influences of alloying elements present in the Al alloys play important role in the corrosion of Al alloys in seawater. The behaviour of Al alloys with addition of Zn, Sn, Cu and Si was greatly enhanced in terms of its potential and corrosion behaviour. Potential of Al with alloying elements reached value more negative than -0.9 V{sub SCE} and showed active corrosion behaviour.

• OSTI ID: 21371700
• Journal Information: AIP Conference Proceedings, Vol. 1217, Issue 1; Conference: ICAMN-2007: International conference on advancement of materials and nanotechnology, Langkawi, Kedah (Malaysia), 29 May - 1 Jun 2007; Other Information: DOI: 10.1063/1.3377892; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
ALUMINIUM ALLOYS
COPPER ADDITIONS
CORROSION
ELECTROCHEMISTRY
POTENTIALS
POTENTIOMETRY
SCANNING ELECTRON MICROSCOPY
SEAWATER
SILICON ADDITIONS
SURFACES
TIN ADDITIONS
ZINC ADDITIONS
ALLOYS
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMISTRY
COPPER ALLOYS
ELECTRON MICROSCOPY
ELEMENTS
HYDROGEN COMPOUNDS
METALS
MICROSCOPY
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SILICON ALLOYS
TIN ALLOYS
TITRATION
TRANSITION ELEMENT ALLOYS
VOLUMETRIC ANALYSIS
WATER
ZINC ALLOYS