Croatica Chemica Acta, Vol. 89 No. 1, 2016.
Original scientific paper
https://doi.org/10.5562/cca2860
Tailoring of K0.8Al0.7Fe0.15Si2.25O6 Leucite Based Dental Ceramic Material
Aleksandar Kremenović
orcid.org/0000-0001-8845-2332
; Laboratory of Crystallography, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11001 Belgrade, Serbia
Martin Fabián
; Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia
Predrag Vulić
; Laboratory of Crystallography, Faculty of Mining and Geology, University of Belgrade, Đušina 7, 11001 Belgrade, Serbia
Čedomir Jovalekić
; Institute for Multidisciplinary Studies, University of Belgrade, Kneza Višeslava 1, 11001 Belgrade, Serbia
Jaroslav Briančin
; Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia
Abstract
Potassium based ceramic materials composed from leucite in which 5 % of Al is exchanged with Fe and 4 % of hematite was synthesized by mechanochemical homogenization and annealing of K2O-SiO2-Al2O3-Fe2O3 mixtures. Synthesized material was characterized by X-ray Powder Diffraction (XRPD) and Scanning Electron Microscopy coupled with Energy Dispersive X-ray spectroscopy (SEM/EDX). The two methods are in good agreement in regard to the specimen chemical composition suggesting that a leucite chemical formula is K0.8Al0.7Fe0.15Si2.25O6. Rietveld structure refinement results reveal that about 20 % of vacancies exist in the position of K atoms.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Keywords
leucite; dental ceramic material; structure; synthesis; ball milling
Hrčak ID:
157570
URI
Publication date:
20.6.2016.
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