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Journal Articles Journal of Non-Crystalline Solids Year : 2022

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

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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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Dates and versions

cea-03719936 , version 1 (11-07-2022)

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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, 2022, pp.121523. ⟨10.1016/j.jnoncrysol.2022.121523⟩. ⟨cea-03719936⟩
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