Oxycarbide glasses

R. Campostrini, G. D Andrea, G. Carturan, R. Ceccato, and G. D. Soraru, Pyrolysis study of methyl-substituted Si-H containing gels as precursors for oxycarbide glasses, by combined ther-mogravimetric, gas chromatographic and mass spectrometric analysis, J. Mater. Chem. 1996,6, 585-594. 

G. D. Soraru, Q. Liu, L. V. Interrante, and T. Apple, The role of precursor molecular structure on the microstructure and high temperature stability of silicon oxycarbide glasses derived from methylen-bridged polycarbosilanes, Chem. Mater. 1998, 10, 4047-4054. 

T. Rouxel, G. Massouras, and G. D. Soraru, High temperature behavior of an SiOC oxycarbide glass Elasticity and viscosity, J. Sol-Gel Sci. Technol. 1999, 14, 83-94. 

G. D. Soraru, Silicon oxycarbide glasses from gels , J. Sol Gel Science and Tech., 2 843 48 (1994). G.M. Renlund, S. Prochazka and R.H. Doremus, Silicon oxycarbide glasses Part II. Structure and... 

G.D. Soraru, G. D Andrea, R. Campostrini and F. Babonneau and G. Mariotto, Structural characterization and high temperature behaviour of silicon oxycarbide glasses prepared from Sol Gel precursors containing Si H bonds , J. Am. Ceram. Soc., 78 379 387 (1995). 

T. Rouxel, J C. Sangleboeuf, J P. Guin, V. Keryvin, Surface damage resistance of gel derived oxycarbide glasses hardness, toughness, and scratchability, J. Am. Ceram. Soc., 84 [10] 2220 24 (2001). 

Above-mentioned facts promoted the research work on the oxycarbide glasses prepared from organically modified alkoxysilanes by the sol-gel method. Also, thermal decomposition process of gels made from alkoxides of other metals than silicon has been applied to produce carbide fibers, films and powders. In this chapter, the research works on sol-gel-derived oxycarbide glasses and crystalline carbides are reviewed. 

The Structure of Gel-Derived Oxycarbide Glasses and its Thermal Evolution at High Temperatures to 1600°C... 

Figure 9-7. Schematic structure model of the sol-gel derived oxycarbide glass (Renlund, I99Ib).

Figure 9-8. Vickers hardness values of the oxycarbide glasses as a function ofpyrolysis temperature (for samples see text).

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