Study of alumosilicate porcelains: Sol-gel preparation, characterization and erosion evaluated by gravimetric method
- Department of General and Inorganic Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius (Lithuania)
- Department of Inorganic Chemistry, Masaryk Brno University, CZ-61137 Brno (Czech Republic)
In this paper, the sol-gel synthesis and characteristic properties of kalsilite-type alumosilicates (KAlSiO{sub 4} and K{sub 0.5}Na{sub 0.5}AlSiO{sub 4}) are reported. The polycrystalline powders were characterized by thermal analysis (TG/DTA), powder X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). Single-phase kalsilite oxides have been obtained after annealing precursor gels for 5 h in the temperature range of 750-850 deg. C. It was demonstrated that crystallinity of the samples slightly depends on the temperature of annealing. From the results obtained, it could be concluded that the KAlSiO{sub 4} solids are composed of the volumetric plate-like grains with no regular size (from 5 {mu}m to 30 {mu}m at 750 deg. C and around 5-50 {mu}m at 850 deg. C). Larger crystallites for mixed potassium-sodium kalsilite have formed (from 10 {mu}m to 80 {mu}m at 750 deg. C and >100 {mu}m at 850 deg. C) in comparison with potassium kalsilite samples). The erosion of obtained dental porcelain samples stored in saliva, beer and Coca-Cola was compared.
- OSTI ID:
- 21143970
- Journal Information:
- Materials Research Bulletin, Vol. 43, Issue 11; Other Information: DOI: 10.1016/j.materresbull.2007.11.021; PII: S0025-5408(07)00526-0; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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