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

J.M. Smith; R.A. Martin; D.T. Bowron; A.C. Hannon; R.J. Newport

doi:10.1016/j.jnoncrysol.2016.05.019

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

J.M. Smith, R.A. Martin^*, D.T. Bowron, A.C. Hannon, R.J. Newport

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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
Pages (from-to)	84–88
Number of pages	5
Journal	Journal of Non-Crystalline Solids
Volume	451
Early online date	25 May 2016
DOIs	https://doi.org/10.1016/j.jnoncrysol.2016.05.019
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

Access to Document

10.1016/j.jnoncrysol.2016.05.019

Crystallisation of a fluoro-apatite - mullite system using neutron diffraction
© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Accepted author manuscript, 789 KBLicence: CC BY-NC-ND 3.0

Cite this

@article{59e0326d973043139cbb6a8c496ef0e3,

title = "Probing crystallisation of a fluoro-apatite - mullite system using neutron diffraction",

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 ~115{\AA} and the result was consistent across all measurements.",

keywords = "apatite, crystallisation, mullite",

author = "J.M. Smith and R.A. Martin and D.T. Bowron and A.C. Hannon and R.J. Newport",

note = "{\textcopyright} 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).",

year = "2016",

month = nov,

day = "1",

doi = "10.1016/j.jnoncrysol.2016.05.019",

language = "English",

volume = "451",

pages = "84–88",

journal = "Journal of Non-Crystalline Solids",

issn = "0022-3093",

publisher = "Elsevier",

}

TY - JOUR

T1 - Probing crystallisation of a fluoro-apatite - mullite system using neutron diffraction

AU - Smith, J.M.

AU - Martin, R.A.

AU - Bowron, D.T.

AU - Hannon, A.C.

AU - Newport, R.J.

PY - 2016/11/1

Y1 - 2016/11/1

N2 - 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.

AB - 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.

KW - apatite

KW - crystallisation

KW - mullite

UR - http://www.scopus.com/inward/record.url?scp=84969593705&partnerID=8YFLogxK

U2 - 10.1016/j.jnoncrysol.2016.05.019

DO - 10.1016/j.jnoncrysol.2016.05.019

M3 - Article

AN - SCOPUS:84969593705

SN - 0022-3093

VL - 451

SP - 84

EP - 88

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

ER -

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

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this