Crystallographic characterization of fluorapatite glass-ceramics synthesized from industrial waste

A series of phase transformations of a novel fluoroaluminosilicate glass forming a range of fluorapatite glass-ceramics on sintering are reported. The sintering process induces formation of fluorapatite, mullite, and anorthite phases within the amorphous silicate matrices of the glass-ceramics. The...

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Bibliographic Details
Published in:Powder Diffraction
Main Authors: Loy, Chee W., Matori, Khamirul A., Zainuddin, Norhazlin, Whitten, Andrew E., Rehm, Christine, de Campo, Liliana, Sokolova, Anna, Schmid, Siegbert
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2017
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Online Access:http://dx.doi.org/10.1017/s088571561700094x
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S088571561700094X
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Summary:A series of phase transformations of a novel fluoroaluminosilicate glass forming a range of fluorapatite glass-ceramics on sintering are reported. The sintering process induces formation of fluorapatite, mullite, and anorthite phases within the amorphous silicate matrices of the glass-ceramics. The fluoroaluminosilicate glass, SiO 2 –Al 2 O 3 –P 2 O 5 –CaO–CaF 2 , is prepared from waste materials, such as rice husk ash, pacific oyster shells, and disposable aluminium cans. The thermally induced crystallographic and microstructure evolution of the fluoroaluminosilicate glass towards the fluorapatite glass-ceramics, with applications in dental and bone restoration, are investigated by powder X-ray diffraction and small-angle neutron-scattering techniques.