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A comparative electrochemical study of commercial and model aluminium alloy (AA5050)

✍ Scribed by P. Premendra; H. Terryn; J. M. C. Mol; J. H. W. de Wit; L. Katgerman

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
800 KB
Volume
60
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

A comparative electrochemical study of commercially recycled AA5050 and model AA5050, in their as‐cast state, is carried out to investigate the effect of recycling and furthermore the effect of trace elements like Pb, Cu, etc on electrochemical activation and filiform corrosion (FFC) susceptibility. A systematic combination of surface analytical techniques like scanning Kelvin probe force microscopy (SKPFM), scanning electron microscopy (SEM) and energy dispersive X‐ray (EDX) is used to study the composition and electrochemical behaviour of second phase particles. These results, together with localized breakdown measurements using the electrochemical micro‐cell, elucidate the effect of recycling and the role played by trace elements in influencing the electrochemical behaviour of the alloy.

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