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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Oxidation of Manganese-Containing Aluminum Alloys
verfasst von : S. C. Wilson, A. Kvithyld, G. Tranell, T. A. Engh
Erschienen in: Light Metals 2014
Verlag: Springer International Publishing
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During remelting of aluminum alloys, industrial experience has shown a tendency toward increased oxidation losses with manganese-containing alloys. A goal of this work is to increase current knowledge of oxidation of Mn-containing aluminum alloys and relate this knowledge to reducing oxidation losses.An oxidation study was performed on 99.99% Al, Al-1%Mn and Al-5%Mn materials in a thermogravimetric furnace with different atmospheres, and in a muffe furnace with air. The mass gain behaviour for these materials was studied and compared for different temperatures and surface preparations.The results show that there was no Mn in the oxide on either the extruded or heated Al-1%Mn samples. The mass gain at 800 and 1000OC. for O2, CO2 and N2 atmospheres (with and without H2O) and for different surface treatments was less than 0.35%, and does not appear to explain increased oxidation losses experienced in industry when remelting Mn-containing alloys.