Anodic Oxide Layer Formation on A357 Aluminium Alloy Produced by Thixocasting |
| Journal |
Solid State Phenomena (Volumes 116 - 117) |
| Volume |
Semi-Solid Processing of Alloys and Composites |
| Edited by |
C.G. Kang, S.K. Kim and S.Y. Lee |
| Pages |
80-83 |
| DOI |
10.4028/www.scientific.net/SSP.116-117.80 |
| Online since |
October, 2006 |
| Authors |
Antonio Forn,
Josep A. Picas,
Maite T. Baile,
Sergi Menargues,
V.G. García
|
| Keywords |
Ageing Heat Treatments, Al Alloy A357, Anodizing, Friction Coefficient, SEM Observation, Thixocasting, Wear Rates |
| Abstract |
Anodizing is widely used in the surface treatment of aluminium alloys in order to preserve
the integrity of the alloy surface, to minimize the need for maintenance and repair, and to maximize
the component life. The aim of this work is to study the influence heat treatments (T5 and T6) have on
the anodization of A357 aluminium alloy produced by a Thixocasting process. In particular the effect
of shape, size and distribution of silicon and intermetallic phases on the anodic oxide film formation.
SEM and EDS analyses were used to examine the microstructural features found on, within and under
the anodic oxide layer. Experiments using a tribometer (pin-on-disc tests) were performed in order to
evaluate the friction and wear properties of the different layers. |
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