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The oxidation kinetics of copper in the air has been studied at various temperatures in the range of 500 °C to 924 °C by thermogravimetry. In that range of temperatures, the oxidation leads to copper I oxide, and the system shows diffusion-controlled kinetics according to Wagner s parabolic law. Plots of the square of the variation of the sample weight as a function of time show a good linear correlation and allow the rate constant to be determined Experiments at various temperatures confirm that the system exhibits an Arrhenius behavior and the frequency factor, as well as the activation energy, have been calculated.

THERMOGRAVIMETRIC STUDY OF THE OXIDATION KINETICS OF COPPER