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To explain the very slow growth rate of the CuO scale during copper oxidation at high temperatures above 850°C as reported in the literature, the influence of the morphology of the CuO grains on scale growth was investigated by oxidizing copper with different purities in 0.1MPa oxygen atmosphere at 600–1000°C. Oxidation of 99.99% copper shows that the growth of the CuO scale depends on the morphology...
In order to study the influence of small amount of impurities on the copper oxidation kinetics, the oxidation was examined at 600–1050°C in 0.1 MPa oxygen atmosphere using 99.5% (2N) and 99.9999% (6N) pure copper specimens. The influence of impurities has been discussed considering the roles of the nonprotective CuO layer, the impurity layer at the Cu2O–Cu interface, and the diffusion of copper in...
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