Electrodeposition on Aluminium Alloys

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Abstract
The technical requirements of electroplating on aluminium have been evaluated qualitatively by other authors for commercial purity aluminium only. Extension of these requirements to aluminium alloys assumed that there is a sufficient similarity of the electrochemical characteristics of these two systems to extrapolate the behaviour of commercial purity aluminium to alloys under plating conditions. Evidence is presented to invalidate this assumption and schemes are proposed to electroplate on all known aluminium alloy types. Physical, chemical and engineering requirements of the aluminium-plated metal composites are also discussed. Evidence of industrial experience with aluminium alloys is admitted to underline specific requirements and methods of compliance with them. Methods of eliminating the effects of process solution contamination are discussed as an indication of robustness of the plating technology under industrial conditions.

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