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Title:
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Surface finish effect on the anodizing behaviour of Al-Si components obtained by sub-liquidus casting process
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Author:
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Menargues Muñoz, Sergi; Picas Barrachina, Josep Anton; Martín Fuentes, Enrique; Baile Puig, Maria Teresa; Campillo Betbese, Manel; Forn Alonso, Antonio
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. CDAL - Centre de Disseny d'Aliatges Lleugers i Tractaments de Superfície |
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Abstract:
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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
corrosion resistance.
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. |
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Abstract:
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Peer Reviewed |
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Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria química::Indústries químiques::Aliatges
-Liquid aluminum
-Semisolid
-Sub-liquidus casting
-Corrosion
-Mechanical properties
-Aluminium
-Anodizing
-Alumini -- Aliatges |
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Rights:
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Document type:
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Article - Published version
Conference Object |
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Published by:
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Springer
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