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Modeling of the DTG Curves for Oxidation of a Nanosized Molybdenum Ferrite Coupling Mechanics and Diffusion

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Abstract

From a model for isothermal oxidation kinetics in nanosized ferrite spinels based on a diffusion-induced stress effect, the authors present a modeling of the DTG curves for the oxidation of Fe2+ and Mo3+ cations on octahedral sites of a molybdenum ferrite. This has been made by considering that the chemical diffusion coefficient is given by the relation \(\tilde D = D_o \exp \left( {\frac{{E'_{\text{a}} + pV_{\text{a}} }}{{RT}}} \right)\), when D o is a pre-exponential factor, E ′a an activation energy and V a an activation energy induced by the oxidation.

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Authors and Affiliations

  1. Université de Rouen, LASTSM, IUT, 76821, Mont Saint Aignan Cedex, France

    V. Nivoix

  2. INSA de Lyon, GEMPPM-UMR CNRS 5510, 20, avenue Albert Einstein, 69621, Villeurbanne Cedex, France

    P. Perriat

  3. Laboratoire de Recherches sur la Réactivité des Solides, UMR CNRS 5613, 9, avenue Alain Savary, BP, 47870-21078, Dijon Cedex, France

    B. Gillot

Authors
  1. V. Nivoix
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  2. P. Perriat
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  3. B. Gillot
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Nivoix, V., Perriat, P. & Gillot, B. Modeling of the DTG Curves for Oxidation of a Nanosized Molybdenum Ferrite Coupling Mechanics and Diffusion. Journal of Thermal Analysis and Calorimetry 59, 847–858 (2000). https://doi.org/10.1023/A:1010118207582

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