Combustion Composite materials

Apart from simple compounds, composite materials may also be prepared by combustion synthesis. Thus a composite of TiB2 and MgO can be formed... 

The high-temperature stability of SiC-based ceramics is well-known, and therefore its composite materials have been investigated for application to high-tem-perature structural materials [19-21]. However, well-known SiC-based fibers and matrix-materials stained with alkali salt are easily oxidized at high temperatures in air [22]. This would be a serious problem when these materials are used near the ocean or in a combustion gas containing alkali elements. In particular, a silicon carbide fiber containing boron (a well-known sintering aid for SiC) over 1 wt% was extensively oxidized under the above condition. In this... 

Figure 8. Ratio of the Chemical Heat of Combustion to Heat of Gasification for Fiber Reinforced Composite and Non-Composite Materials...

Rai, D., Mattigod, S. V., Eary, L. E. Ainsworth, C. C. 1988. Fundamental approach for predicting pore-water composition in fossil fuel combustion wastes. Materials Research Society Symposium Proceedings, 113, 317-324. 

Combustion is best controlled when the waste is homogeneous, both in physical and compositional terms.2 Thus, during industrial waste combustion this can be achieved by blending the incoming waste streams to a consistent, controlled composition prior to combustion. Solid material can be shredded... 

TI02/P0LYMER COMPOSITE MATERIALS WITH REDUCED GENERATION OF TOXIC CHEMICALS DURING AND AFTER COMBUSTION - EFFECT OF HF-TREATED TI02... 

Borovinskaya, I. P, Vishnyakova, V. M Maslov, V. M and Mezhanov, A. G., On the possibility of the composite materials obtaining in combustion regime. In Combustion Processes in Chemical Engineering and Metallurgy (Russ.) (A. G. Merzhanov, ed.). USSR Academy of Science, Chemogolovka, Russia, 1975b, p. 141. 

Moore, J. J., Combustion synthesis of ceramic-metal composite materials in microgravity. Proceedings of the Third International Microgravity Workshop, Cleveland, OH, 165 (1995). 

Yanagisawa, N., Asano, O., Sata, N., and Sanada, N., Synthesis and properties of TiB2-TiNi composite materials by SHS process. Proceedings of the First US-Japanese Workshop on Combustion Synthesis, Tokyo, Japan, 157 (1990). 

Yi,. H. C., Varma, A., Rogachev, A. S., and McGinn, P. J., Gravity-induced microstructural nonuniformities during combustion synthesis of intermetallic-ceramic composite materials. Ind. Eng. Chem. Res., 35,2982 (1996). 

As disadvantages compared to conventional fuels or synthetic liquid hydrocarbons, the low heating value has to be mentioned as well as the need to adapt combustion devices (materials, fuel supply systems). On the other hand, the environmental potential is obvious and the flexibility of the synthesis process with respect to product composition for different application fields seems to be promising. 

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