Abstract
The effect of the atmosphere on the oxidation rates of aluminum-can alloyswas studied using thermogravimetric methods. The atmospheres included: air,Ar+1%O2, Ar+5%O2, and CO2. Temperaturesranged from 450 to 800°C. The oxidation rate was influenced by thesurface condition and by the time elapsed after specimen preparation. Increasingtemperature increased the oxidation rate of both AA 3004 and 5182. Parabolickinetics were observed for AA 3004 and linear kinetics were observed forAA 5182 at 450 and 500°C. From 550 to 800°C, parabolic behavior wasobserved for AA 5182. The reduction of free oxygen in the atmosphere reducedthe rate of oxidation. The reactivity of the atmospheres decreased in thefollowing sequence: air, Ar+5%O2, Ar+1%O2, and CO2.
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Tenório, J.A.S., Espinosa, D.C.R. High-Temperature Oxidation of Al–Mg Alloys. Oxidation of Metals 53, 361–373 (2000). https://doi.org/10.1023/A:1004549522648
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DOI: https://doi.org/10.1023/A:1004549522648