Solid State Science and Technology, Vol. 16, No 1 (2008) 175-180
Corresponding Author: email@example.com
CORROSION BEHAVIOUR OF Al AND Al ALLOYS CONTAINING Zn, Sn AND Cu IN SEAWATER
Siti Radiah Mohd Kamarudin1, Muhamad Daud1,
Abd. Razak Daud2
1Malaysian Nuclear Agency (Nuclear Malaysia)
Bangi, 43000 Kajang, MALAYSIA
2Faculty of Science and Technology, Universiti Kebangsaan Malaysia
43600 Bangi, Selangor, Malaysia
The corrosion behaviour of aluminium (Al) alloys in seawater medium was investigated
using potentiodynamic technique, complemented by Scanning Electron Microscopy
(SEM) and EDAX. SEM was carried out to characterize the corroded surface and to
observe the extent of corrosion attack on the Al alloys tested in seawater. EDAX
analysis was used to identify elements present on the specimen surface. The results
indicate that zinc (Zn), stanum (Sn) and copper (Cu) as alloying elements enhance
corrosion behaviour of the aluminium in seawater by shifting the potential to a more
negative value. In the presence of those elements, the Al alloys becomes more active,
having potential of more than –1.0 VSCE and showed active corrosion behaviour.
. J.T. Reding and J.J.Newport, (1966); The Influence Of Alloying Elements On
Aluminum Anodes In Seawater, Dow Chemical Co.
. H.P. Godard, (1981); An Insight Into the corrosion Behaviour of Aluminum.
Plenary Lecture. National Association of Corrosion Engineers. Material
. C.B.Breslin, W.M.Carroll. (1993); The Activation of Aluminum by Activator
elements. Science. Vol. 35, 197-203.
. Christian Vargel. (2004); Corrosion of Aluminum. Elsevier Ltd, UK. 26
. Francis L.Laque. (1975); Marine Corrosion Causes And Prevention. John wiley
& Sons, Inc. 191
. S.L. Wolfson. (1994); Operating Performance Of Aluminum Anodes – Results
From Lab And Field Tests. Materials Performance, 22.
. A.G. Munoz, S.B.Saidman, J.B. Bessone. (2001); Influence Of In On The
Corrosion Of Zn-In Alloys. Corrosion Science 43, 1245-1265.
. C.B.Breslin, L.P.Friery, W.M.Carroll. (1994); Corrosion Science 36, 85.
. A.Barbucci, G. Cerisola, G. Bruzzone and A.Saccone. (1997); Electro.