A study of the growth of iron oxides by Mössbauer spectroscopy |
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| Authors: | DA Channing SM Dickerson MJ Graham |
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| Affiliation: | Central Electricity Generating Board, Berkeley Nuclear Laboratories, Berkeley, Glos., U.K.;Division of Chemistry, National Research Council of Canada, Ottawa, Ontario, Canada K1A OR9 |
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| Abstract: | The rate of oxidation of Fe3O4 to α-Fe2O3 in 1 atm of oxygen has been measured at 592°, 629° and 667°C by Mössbauer transmission spectroscopy. Taken together with our earlier measurements, the data lead to an activation energy for α-Fe2O3 growth of 44 kcal mole−1 for the temperature interval 475–670°C. That the Mössbauer technique should prove useful in the study of reactions in oxide scales containing wüstite is also demonstrated. |
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