Abstract
Within the Na2O-CaO-Al2O3-SiO2-P2O5-F system, in the nominal binary nepheline-fluorapatite phases were prepared and investigated. Transparent glasses were obtained in a high nominal ratio of nepheline, i.e. 75, 80, 85 and 90%, whereas the low ones, i.e. 25, 50 and 70% gave devitrified glasses. The thermal behaviour of the glasses and both the crystalline phases and the microstructure of the glass ceramic were investigated. Moreover, the bioactivity of glasses and glass ceramics was also examined. Nepheline, fluorapatite and high cristobalite were the main crystalline phases developed through the heat-treatment process of the glass powders in the 800–1250°C temperature range. High cristobalite and nepheline were developed as the main phases that were treated either at high or low temperature. The microstructure shows spread crystals and flake-like crystals embedded in a glassy matrix. In vitro, the bioactivity testing of the glasses and the corresponding glass-ceramic, sintered at 900°C, showed that the sample containing 75% nominal nepheline was the best regarding in the bioactivity behaviour.
Similar content being viewed by others
References
Höland, W., Beall, G.H.: Glass-Ceramic Technology. The American Ceramic Society, Westerville, OH (2002)
Mac Dowell, J.F.: Microwave heating of nepheline glass ceramics. J. Am. Ceram. Soc. 58 (1975) 258–259
Wang, M.C., Wu, N.C., Hon, M.H.: Preparation of nepheline glass ceramics and their application as dental porcelain. Mater. Chem. Phys. 37 (1994) 370–375
Hamzawy, E.M.A., El-Meliegy, E.M.: Preparation of nepheline glass ceramics for dental applications. Mater. Chem. Phys. 112 (2008) 432–435
Hamzawy, E.M.A., El-Meliegy, E.M.: Crystallization in the Na2O-CaO-Al2O3-SiO2-(LiF) glass compositions. Ceram. Int. 33 (2007) 227–231
Hamzawy, E.M.A., Leonelli, C.: Crystallization and substitutions of Fluor-Mg-rich-terite (Li, Na, K)2 Mg6Si8 O22 F2 glasses. European J. Glass Sci. and Technol., Part A 48 (2007) 316–321
Kivlighn, H.D.J.R., Russak, M.A.: Formation of nepheline glass ceramics using Nb2O5 as a nucleation catalyst. J. of the Am. Ceram. Soc. 57 (1974) [9] 382–385
Megles J.E.: Nepheline-feldspar glass ceramics. US 3653865 A, (1970)
Das, S.K., Dwivedi, R.N., Thiagarajan, S., Thakur, R.L.: Nucleation and crystallisation of some Na2O-Al2O3-SiO2 and Na2O-BaO-Al2O3-SiO2 glasses J. Non Cryst. Solids 38–39 (1980) 729–734
Moisescu, C., Jana, C., Rüssel, C.: Crystallization of rod-shaped fluoroapatite from glass melts in the system SiO2-Al2O3-CaO-P2O5-Na2O-K2O-F-. J. Non-Cryst. Solids 248 (1999) 169–175
Hench, L.: Chronology of bioactive glass development and clinical applications. New J. Glass and Ceram. 3 (2013) 67–73
Clark, A.E., Hench, L.L.: The influence of surface chemistry on implant interface histology: A theoretical basis for implant materials selection. J. Biomed. Mater. Res. 10 (1976) 161–174
Hollander, M., Wolfe, D.A.: Nonparametric statistical methods.: John Wiley & Sons, Inc., New York (1973), ISBN-13: 9780471406358
JCPDS-International Center for diffraction Data ICDD, PDF-2 Data Base (Sets 1–51 plus 70–89), 2001
Buerger, M.J.: The stuffed derivatives of silica matrix. Am. Miner. 39 (1954) 600–614
Saltzberg, M.A., Bors, S.L., Bergna, H., Winchester, S.C.: Synthesis of chemically stabilized cristobalite. J. Am. Ceram. Soc. 75 (1992) 89–95
Lee, S.J., Lee, C.H.: Critical size effect for chemically doped α-cristobalite transformation. Mat.. Lett. 45 (2000) 175–179
Thomas, E.S., Thompson, J.T., Withers, R.L.: Further investigation of the stabilization of α-cristobalite. J. Am. Ceram. Soc. 77 (1994) 49–56
Perrotta, A.J., Grubbs, D.K., Martin, E.S., Dando, N.R., McKinstry, H.A., Huang, C.Y.: Chemical stabilization of α-cristobalite J. Am. Ceram. Soc. 72 (1989) 441–447
Xu, Y.N., Ching, W.Y.: Electronic and optical properties of all polymorphic forms of silicon dioxide. Phys. Rev. B. 44 (1991) 11048–11059
Alharbi, O.A., Zaki, D.Y., Hamzawy, E.M.A.: Crystallization control of cristobalite and tridymite in sintered glass ceramics. Silicon 4 (2012) 281–287
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hamzawy, E.M.A., Alharbi, O.A. & Zaki, D.Y. Characterization and Bioactivity in High Cristobalite-Nepheline-Apatite Glass and Glass Ceramics. Interceram. - Int. Ceram. Rev. 65, 32–36 (2016). https://doi.org/10.1007/BF03401151
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF03401151