Abstract
Fluorophlogopite glass-ceramics in the MgO–Al2O3–SiO2 glass systems were crystallized by two stages thermal treatments. Obtained glass-ceramics were characterized by DTA, X-ray diffraction and scanning electron microscopy. The heat treated samples at 705°C/3 h + 1000°C/15 min showed 2570.32 ± 98 MPa microhardness. The effect of heat treatment and preparation methods on microhardness and microstructure were studied. The microstructure of samples showed phlogopite and forsterite phases and solved or soft edge in the semi-rod like crystals was recorded which can explain the small value of microhardness. The various microhardness were determined in the range between 1591.61 to 9610 ± 147 MPa.
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Höland, W. and Beall, G.H., Glass-Ceramic Technology, Hoboken, NJ: Wiley, 2012.
Khatib Zadeh, S., Samedani, M., Eftekhari Yekta, B., and Hasheminia, S., Effect of sintering and melt casting methods on properties of a machinable fluor-phlogopite glass-ceramic, J. Mater. Process. Technol., 2008, vol. 203, pp. 113–116.
Eftekhari Yekta, B., Hashemi Nia, S., and Alizadeh, P., The effect of B2O3, PbO and P2O5 on the sintering and machinability of fluormica glass-ceramics, J. Eur. Ceram. Soc., 2005, vol. 25, pp. 899–902.
Cheng, K., Wan, J., and Liang, K., Hot-pressed mica glass ceramics with high strength and toughness, J. Am. Ceram. Soc., 1999, vol. 82, pp. 1633–1634.
Radonjic, Lj. and Nikolic, Lj., The effect of fluorine source and concentration on the crystallization of machinable glass-ceramics, J. Eur. Ceram. Soc., 1991, vol. 7, pp. 11–16.
Xu, H.H.K, Smith, D.T., and Jahanmir, S., Influence of microstructure on indentation and machining of dental glass-ceramics, J. Mater. Res., 1996, vol. 11, no. 9, pp. 2325–2337.
Carl, G., Crystallization behavior and properties of a mica, glass-ceramic with various additions of TiO2 and ZrO2, Proc. XVII Int. Congr. on Glass, Bejing, 1995, vol. 5, pp. 343–348.
Lee, W.E., Arshad, S.E., and James, P.F., Importance of crystallization hierarchies in micro structural evolution of silicate glass-ceramics, J. Am. Ceram. Soc., 2007, vol. 90, no. 3, pp. 727–737.
Cheng, K., Wan, J., and Liang, K., Differential thermal analysis on the crystallization kinetics of K2O–B2O3–MgO–Al2O3–SiO2–TiO2–F glass, J. Am. Ceram. Soc., 1999, vol. 82, pp. 1212–1216.
Baik, D.S., No, K.S., Chun, J.S., and Cho, H.Y., Effect of the aspect ratio of mica crystals and crystallinity on the microhardness and machinability of mica glass-ceramics, J. Mater. Process. Technol., 1997, vol. 67, pp. 50–54.
Faeghinia, A., Effect of B2O3 on crystallization behavior and microstructure of MgO–SiO2–Al2O3–K2O–F glass-ceramics, Ceram. Interfaces, 2007, vol. 33, pp. 773–778.
Eftekhari Yekta, B. and Hamnabard, Z., Sintering and crystallization behavior of machinable fluorphlogopitegehlenite glass-ceramic, Int. J. Appl. Ceram. Technol., 2009, vol. 6, no. 1, pp. 72–79.
Arshad, S.E., Lee, W.E., and James, P.F., Crystallization and microstructural evolution of commercial fluosilicate glass-ceramic. www.sst.ums.edu.my/data/file/TxI332N0ft6r.pdf
Ray, C.S. and Day, D.E., Determining the nucleation rate curve for lithium disilicate glass by differential thermal analysis, J. Am. Ceram. Soc., 1990, vol. 73, pp. 439–442.
Saraswati, V. and Sarala Raoot, Machinable micabased glass-ceramic, J. Mater. Sci., 1992, vol. 27, pp. 429–432.
Tulyaganov, D.U., Agathopoulos, S., Fernandes, H.R., and Ferreira, J.M.F., Synthesis and characterization of synthetic F-mica containing glass-ceramics in the system SiO2–Al2O3–B2O3–CaO–MgO–Li2O–(K,Na)2O, J. Mater. Res., 2004, vol. 3, pp. 1234–1242.
Abo-Mosallam, H.A., Salama, S.N., and Salman, S.M., Formulation and characterization of glass-ceramics based on Na2Ca2Si3O9–Ca5(PO4)3F–Mg2SiO4 system in relation to their biological activity, J. Mater. Sci.: Mater. Med., 2009, vol. 20, pp. 2385–2394.
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Faeghinia, A., Razavi, M. Microstructural design of phlogopite glass-ceramics. Glass Phys Chem 42, 182–187 (2016). https://doi.org/10.1134/S1087659616020061
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DOI: https://doi.org/10.1134/S1087659616020061