Influence of temperature and initial ratio of the reactants on the formation of rusts in sulphated aqueous media |
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| Authors: | A A Olowe J M R Génin |
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| Institution: | (1) L.S.M. Département Sciences des Matériaux, ESSTIN, Parc R. Bentz, Université de Nancy I, F 54500 Vandoeuvre-Nancy, France |
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| Abstract: | The investigation of the rusts obtained in sulphated aqueous media is done using the Mössbauer spectroscopy by simulating the corrosion process through the oxidation of ferrous hydroxide obtained by mixing FeSO4 and NaOH in different initial ratios R=FeSO4]/NaOH]. The influence of the temperature of oxidation is studied from 10°C to 60°C for various values of R scanning from 0.2 to 3. One notes strickingly that goethite is always present whereas magnetite and lepidocrocite are never observed together. |
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