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A thermogravimetric study of the oxidation of CuFeO2

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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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Authors and Affiliations

  1. Division of Materials, National Physical Laboratory, 110 012, New Delhi, India

    G. C. Jain, B. K. Das & R. Avtar

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  1. G. C. Jain
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  2. B. K. Das
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  3. R. Avtar
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Jain, G.C., Das, B.K. & Avtar, R. A thermogravimetric study of the oxidation of CuFeO2 . J Mater Sci 12, 1903–1908 (1977). https://doi.org/10.1007/BF00566252

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  • DOI: https://doi.org/10.1007/BF00566252

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