D. Zerouali
Department of chemistry, Faculty of Sciences, Laboratory of Materials
University of Sciences and Technology of Oran U. S.T.O. BP-1505 el Mnaouer Oran 3 1 non-Algeria
Z. Derriche
Department of chemistry, Faculty of Sciences, Laboratory of Materials
University of Sciences and Technology of Oran U. S.T.O. BP-1505 el Mnaouer Oran 3 1 non-Algeria
M.Y. Azri
Department of chemistry, Faculty of Sciences, Laboratory of Materials
University of Sciences and Technology of Oran U. S.T.O. BP-1505 el Mnaouer Oran 3 1 non-Algeria
ABSTRACT
Electrochemical corrosion studies of industrial Aluminium alloy AA 5083 corrosion in natural gas containing mercury metal and water as impurities showed to be a complex process. Single scan voltamograms of amalgamated electrode presents peaks of electrochemical oxidation around E = -1.4 volt/SCE and a corrosion potential Ecor = -1.6 volt/SCE showing an active amalgamated surface. Oxydation peak, Ip relating rate of electrochemical oxidation of aluminium was depending on three factors: thickness of amalgam and diffusivity of aluminium in amalgam, rate of chemical dissolution of aluminium in mercury which is the limiting step at high scanning rate potential and low immersion time. Diffusional step which controls kinetics at highest immersion time and lowest scanning rate and an intermediate step which controlled by the two kinetics.
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How to cite this article
D. Zerouali, Z. Derriche and M.Y. Azri, 2006. Electrochemical Study of Aluminium Alloy AA 5083 Corrosion Induced by Elemental Mercury in LNG Industries. Journal of Applied Sciences, 6: 2491-2495.
DOI: 10.3923/jas.2006.2491.2495
URL: https://scialert.net/abstract/?doi=jas.2006.2491.2495
DOI: 10.3923/jas.2006.2491.2495
URL: https://scialert.net/abstract/?doi=jas.2006.2491.2495
REFERENCES
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CrossRefDirect Link