NEW EXPERIMENTAL APPROACH IN THE SEARCH OF INTERMETALLIC COMPOUNDS FOR FE, MN AND SI REMOVAL IN ALUMINUM RECYCLING

摘要

A new experimental approach has been developed to identify new, unknown complex intermetallic compounds which can precipitate and segregate Fe, Mn and Si from a liquid aluminum melt during recycling. For this basic investigation, a complete experimental procedure has been defined and tested in terms of addition elements, melt processing, cooling conditions and crucible material. Analysis on all samples has been performed by either XRF or ICP by comparing the Fe, Mn and Si content on the top and the bottom of the samples. Several specimens have been analyzed by SEM to investigate the shape and to identify the composition of the observed intermetallics. A list of addition elements has been defined and a maximum amount of nine elements were added at a time. This work was founded by the EEC in the framework of the Growth programme (G1RD-CT-2002-00728).