Abstract
Real-time small angle neutron scattering and wide angle neutron scattering studies were undertaken concurrently on a glass ionomer of nominal composition 4.5(SiO2)-3(Al2O3)-1.5(P2O5)-3(CaO)-2(CaF2). Neutron studies were conducted as a function of temperature to investigate the crystallisation process. No amorphous phase separation was observed at room temperature and the onset of crystallisation was found to occur at 650°C, which is 90°C lower than previously reported. The first crystalline phase observed corresponded to fluorapatite; it was only upon further heating was the mullite phase became present. The crystallite size at 650°C was found to be ~115Å and the result was consistent across all measurements.
Original language | English |
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Pages (from-to) | 84–88 |
Number of pages | 5 |
Journal | Journal of Non-Crystalline Solids |
Volume | 451 |
Early online date | 25 May 2016 |
DOIs | |
Publication status | Published - 1 Nov 2016 |
Bibliographical note
© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/Funding: EPSRC (EP/F021011).
Keywords
- apatite
- crystallisation
- mullite