Surface Analysis and Bonding of Aluminium-Magnesium Alloys

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Abstract
Previous work has used X-ray photoelectron spectroscopy to examine the surface compositions of aluminium-alloy substrates subjected to various surface pretreatments prior to bonding. It was proposed that the presence of magnesium in the oxide structure adversely affected the service-life of adhesive joints when they were exposed to aqueous environments. The present work further explores this correlation by examining a range of aluminium alloys, basically of the same composition except for the level of magnesium in the alloy.