Enhanced thermal stability of high-bismuth borate glasses by addition of iron

MARY, Nicolas, REBOURS, Marius, CASTEL, Elena, VAISHNAV, Shuchi, DENG, Wei, BELL, Anthony, CLEGG, Francis, ALLSOPP, Benjamin, SCRIMSHIRE, Alex and BINGHAM, Paul (2018). Enhanced thermal stability of high-bismuth borate glasses by addition of iron. Journal of Non-Crystalline Solids.

[img]
Preview
PDF
Mary-EnhancedThermalStabilityOfHigh-BismuthBorate(AM).pdf - Accepted Version
Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB) | Preview
Official URL: https://www.sciencedirect.com/science/article/pii/...
Link to published version:: https://doi.org/10.1016/j.jnoncrysol.2018.07.061
Related URLs:

    Abstract

    Glasses with nominal molar composition 20B2O3 – (80-x)Bi2O3 – xFe2O3 (where x = 0–40) were successfully prepared by melt-quenching. These glasses were characterised by multiple techniques including density, X-ray diffraction (XRD), X-Ray fluorescence (XRF), Raman, FT-IR and Mössbauer spectroscopies, dilatometry and differential thermal analysis (DTA). Partial replacement of Bi2O3 by Fe2O3 leads to decreasing density and molar volume and a substantial increase in thermal stability, as measured by several parameters, with maximum improvements achieved when x = 10-20. These improvements are accompanied by modest increases in dilatometric softening point. FT-IR and Raman spectra confirm the presence of BO3 and BiO6 structural units in all glasses, with glass structure apparently little affected by Fe2O3. Mössbauer spectroscopy confirms that iron is present partly as 4-fold coordinated Fe3+ in all glasses, with some 5- and / or 6- coordinated Fe3+ sites also present.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre
    Departments - Does NOT include content added after October 2018: Faculty of Science, Technology and Arts > Department of Engineering and Mathematics
    Identification Number: https://doi.org/10.1016/j.jnoncrysol.2018.07.061
    Depositing User: Paul Bingham
    Date Deposited: 22 Aug 2018 14:40
    Last Modified: 20 Aug 2019 01:18
    URI: http://shura.shu.ac.uk/id/eprint/22353

    Actions (login required)

    View Item View Item

    Downloads

    Downloads per month over past year

    View more statistics