Abstract
In this paper, the elaboration of Al-Mn alloys by aluminothermic reduction of Mn2O3 powders obtained from anodes of alkaline batteries spent and aluminum beverage cans is studied. Variables analyzed were concentration of Mn (1-1.5%), and reduction treatment time (0-240 minutes). The experiments were performed at temperature (1073 K), stirring speed (200 rpm), and powders constant size (325 mesh). Results are discussed on the basis of the dissolution of Mn into the alloy, as a result reducing Mn2O3. The results obtained showed that the aluminothermic reduction method of powders of Mn2O3, is a good alternative for the elaboration of Al-Mn alloys.
Highlights
Aluminium is the most abundant metallic element in earth, posing an excellent combination of chemical, mechanical and physical properties which made it suitable for many applications
We present and discusses the results obtained from the manufacture of Al-Mn al‐ loys from recyclable materials by the aluminothermic reduction process. 3.1
Al-1 wt.% Mn alloys Chemical analysis results show that the Mn contentin the alloy in creases with in creasing treatment time, suggesting that the aluminothermic reduction of Mn2O3 takes place with in the molten metal
Summary
Aluminium is the most abundant metallic element in earth, posing an excellent combination of chemical, mechanical and physical properties which made it suitable for many applications. Some aluminium al‐ loys require higher mechanical properties, which are attainable by thermal or thermomechan‐ ical treatments. This is the case for extrusions or hot or cold rolled products [1]. Alloys of the Al-Mn-Mg series have been used as raw materials for the elaboration of bever‐ age cans. In these alloys, the second phase particles such as β-Al6(Fe,Mn) or α-Al12(Fe,Mn)3Si play an important role in the development of microstructure [2].
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