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Iron enriched peraluminous glasses: incorporation limit and effect of iron on glass transition temperature and viscosity

Abstract : This study investigates the effect of iron oxide Fe2O3 on the homogeneity, viscosity, and glass transition temperature (Tg) of peraluminous glasses. As-quenched glass samples elaborated at 1350°C show an incorporation limit around 17.5 wt% of Fe2O3 (10.4 mol%), while slowly cooled glass samples show a limit of 7.5 wt% of Fe2O3 (4.25 mol%). Iron in the peraluminous glasses investigated was detected under three configurations: 6-fold coordinated 6Fe3+ in majority, 4-fold coordinated 4Fe3+ and 6-fold coordinated 6Fe2+. It was observed that Fe2O3 addition has a strong fluidifying effect on peraluminous glasses and tends to slightly decrease the glass transition temperature Tg, depending on its thermal history.
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https://hal-cea.archives-ouvertes.fr/cea-03719936
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Submitted on : Monday, July 11, 2022 - 3:30:17 PM
Last modification on : Wednesday, August 24, 2022 - 6:29:06 PM

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Erik Hansen, Damien Perret, Isabelle Giboire, Sébastien Diliberto, Christophe Rapin. Iron enriched peraluminous glasses: incorporation limit and effect of iron on glass transition temperature and viscosity. Journal of Non-Crystalline Solids, Elsevier, 2022, pp.121523. ⟨10.1016/j.jnoncrysol.2022.121523⟩. ⟨cea-03719936⟩

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