A comparative electrochemical study of commercial and model aluminium alloy (AA5050) |
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| Authors: | P Premendra H Terryn J M C Mol J H W de Wit L Katgerman |
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| Affiliation: | 1. Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628CD Delft (The Netherlands);2. Materials Innovation Institute (M2i), Mekelweg 2, 2628CD Delft (The Netherlands);3. Department of Metallurgy, Electrochemistry and Materials Science, Vrije Universiteit Brussel, Pleinlaan 2, B‐1050 Brussels (Belgium) |
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| 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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| Keywords: | AA5050 electrochemical micro‐cell recycled aluminium alloy SEM/EDX SKPFM |
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