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Surface Energy of Pure Aluminium with various treatments

I am investigating the surface energy of Aluminium for bonding purposes and was looking for any information or literature values for surface energy of a 'fresh' aluminium surface, a phosphoric acid pre-treated (etched, acid pickled) aluminium surface and a chromic acid anodised aluminium surface.

Any help would be greatly appreciated

Jonathan Carson
Research - Cambridge, Cambs, United Kingdom
January 27, 2011

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