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Abstract
The oxidation kinetics of CuFeO2 have been studied between 500 and 1000° C under various oxygen partial pressures using thermogravimetric analysis (TGA). The oxidation rate was found to increase as the oxygen partial pressure was increased, and for a given partial pressure of oxygen it was found to be maximum at ∼700° C. The enthalpy and activation energy for the oxidation of CuFeO2 were calculated to be ∼26.6±2 and ∼18±2 kcal mol−1 respectively. The oxidation of CuFeO2 resulted in the formation of CuFe2O4 and CuO, and the rate of reaction followed an S-type curve as found in the pearlitic transformation in steels.
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