Kinetics of internal oxidation of Cu−Al alloy plate

Song Kexing; Xing Jiandong; Tian Baohong; Liu Ping; Dong Qiming

doi:10.1007/BF02870863

Journal of Wuhan University of Technology Materials Science Edition ›› 2005, Vol. 20 ›› Issue (1) : 13 -16. DOI: 10.1007/BF02870863

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Kinetics of internal oxidation of Cu−Al alloy plate

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Abstract

The kinetics of internal oxidation of dilute Cu−Al alloys, containing up to 2.214% molar fraction Al, was investigated over the temperature range of 1023 K to 1273 K, and the depth of internal oxidation was measured by microscopies. A modified rate equation was derived to describe the kinetics of internal oxidation of Cu−Al alloy plate. Based on the derived equation, the permeability of oxygen in solid copper was obtained from the internal oxidation measurements. The experimental results show that the depth of the internal oxidation is a parabolic function of time, there is no evidence for preferential diffusion along grain boundaries and an outer layer of pure copper was formed on the external surface of samples.

Keywords

internal oxidation / kinetics / Cu−Al alloys / diffusion / plate

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Song Kexing, Xing Jiandong, Tian Baohong, Liu Ping, Dong Qiming. Kinetics of internal oxidation of Cu−Al alloy plate. Journal of Wuhan University of Technology Materials Science Edition, 2005, 20(1): 13-16 DOI:10.1007/BF02870863

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