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Probing crystallisation of a fluoro-apatite - mullite system using neutron diffraction

Smith, J.M., Martin, R.A., Bowron, D.T., Hannon, A.C., Newport, Robert J. (2016) Probing crystallisation of a fluoro-apatite - mullite system using neutron diffraction. Journal of Non-Crystalline Solids, 451 . pp. 84-88. ISSN 0022-3093. (doi:10.1016/j.jnoncrysol.2016.05.019) (KAR id:73506)

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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 ~ 115 Å and the result was consistent across all measurements.

Item Type: Article
DOI/Identification number: 10.1016/j.jnoncrysol.2016.05.019
Uncontrolled keywords: Crystallisation, Apatite, Mullite
Subjects: Q Science > QC Physics
Divisions: Faculties > Sciences > School of Physical Sciences
Depositing User: Robert Newport
Date Deposited: 16 Apr 2019 09:02 UTC
Last Modified: 03 Jun 2019 09:41 UTC
Resource URI: (The current URI for this page, for reference purposes)
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