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The aim of this study was to investigate the hard decorative anodizing components of A357 aluminium
alloy, obtained in semisolid state by Sub Liquidus Casting® process, to improve its tribological properties and
Components were heat treated in order to modify the shape and distribution of the eutectic silicon phase. The influence
of shot peening pre-treatment on anodizing process was evaluated. Surface modifications were investigated as they
might have beneficial effects on the wear and corrosion behaviour. Furthermore, the influence of surface condition on
the anodization colouring behaviour of aluminium was studied.
The microstructure and the surface finish influence on the anodic oxide film growth were studied by optical and
scanning electron microscopy. Experiments using a tribometer (ball on disc configuration) were performed in order to
evaluate the tribological properties of the material. Salt spray corrosion tests were used to study the corrosion properties
before and after the anodizing process.
CitationMenargues, S. [et al.]. Surface finish effect on the anodizing behaviour of Al-Si components obtained by sub-liquidus casting process. A: ESAFORM Conference on Material Forming. "13th International ESAFORM Conference on Material Forming". Brescia: Springer, 2010, p. 1-4.
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