Glass-ceramics composition

Li Si O enstatite [14681-78-8] MgSiO diopside [14483-19-3], CaMgSi O and woUastonite [14567-57-2], CaSiO. A number of sihcate glass-ceramic compositions are given in Table 1. 

FIuorosihca.tes, Compared to the simple sUicates, these crystals have more complex chain and sheet stmctures. Examples from nature iaclude hydrous micas and amphiboles, including hornblende and nephrite jade. In glass-ceramics, fluorine replaces the hydroxyl ion fluorine is much easier to iacorporate ia glass and also makes the crystals more refractory. Eour commercial fluorosUicate glass-ceramic compositions and thek properties are Usted ia Table 2. 

Table 2. Fluorosilicate Glass-Ceramic Compositions and Properties...

While necessary, the property measurements alone do not provide all the necessary information about the functionality of the seal material. However, material screening and evaluation using stack tests are not practical. In this section experimental techniques to evaluate the seal material in addition to property measurements are discussed. While discussions focus on glass or glass-ceramic composite seal materials, many of the techniques apply to other types of seal materials. 

E. Corral, B. Gauntt, and R. Loehman, Controlling Seal Materials Properties for Reliable Seal Performance Using Glass-Ceramic Composites, 30th International Conference on Advanced Ceramics and Composites, Daytona Beach, FI. January 21-26, 2007. 

Oxynitride glasses - glass ceramics composites S Hampshire, University of Limerick, Ireland 560... 

Schematic of the slurry infiltration process for making a fibre-reinforced glass and glass-ceramic composite (reproduced by permission of Woodhead Publishing Limited)74. 

Various researchers have used different techniques for the fabrication of ceramic matrix composite (CMC) by using (a) chemical vapour deposition (CVD), (b) chemical vapour infiltration (CVI) and (c) modelling of CVI [43-54], but it is difficult to fabricate glass/glass-ceramic composite using these techniques. 

Silicon carbide whisker-reinforced glass and glass-ceramic composites... 

Chyung, K., etal., Nicalon fibre reinforced LAS glass-ceramic composites , presented at the 9th Conf. on Composite Materials, January 1985, Cocoa Beach, FL. 

GadKaree, K.P. and Chyung, K., Silicon-carbide-whisper-reinforced glass and glass-ceramic composites , Am. Ceram. Soc. Bull., 65 (2), 370-376 (1986). 

Blissett, M.J. (1995), Aspects of the Thermal Shock Behaviour of Continuous Fibre-Reinforced Glass-Ceramic Composites, PhD Thesis, University of Surrey. 

Chawla, N., Chawla, K.K., Koopman, M., Patel, B., Coffin, C., Eldridge, J.I. (2001), Thermal-shock behaviour of a Nicalon-fiber-reinforced hybrid glass-ceramic composite , Comp. Sci. Tech., 61, 1923-1930. 

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