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The oxidation resistance of copper-aluminum alloys at temperatures up to 1,000°C

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Abstract

In this study, the high-temperature oxidation resistance of copper and copper-aluminum alloys in air was investigated using thermo-gravimetric analysis. Upon heating in air, copper starts to noticeably oxidize at temperatures above 400°C. It was found that as the temperature increased, more aluminum was required in order to protect the copper. Alloying with 4 wt.% aluminum leads to a remarkable improvement in oxidation resistance. The atmosphere used to heat the samples to the required test temperatures had a noticeable impact on the subsequent oxidation rates. When heated in argon before being oxidized, copper alloys with 3 wt.% and 4 wt.% aluminum showed excellent oxidation resistance with rates 1,000 times less than that of pure copper at 1,000°C. However, when these alloys were heated in air, they were much less effective at providing oxidation resistance.

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For more information, contact Gabriel Plascencia, University of Toronto, Materials Science & Engineering Department, 184 College St., Toronto, ON, Canada, M5S 3E4; (416) 978-0912; fax (416) 978-4155; e-mail g.plascencia@utoronto.ca.

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Plascencia, G., Utigard, T. & Marín, T. The oxidation resistance of copper-aluminum alloys at temperatures up to 1,000°C. JOM 57, 80–84 (2005). https://doi.org/10.1007/s11837-005-0068-3

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  • DOI: https://doi.org/10.1007/s11837-005-0068-3

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