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Artigo Científico | Termodinâmica | Inglês | 13/09/1999
Autores: L.A. Genova, J.C. Bressiani, V. Izhevskyi
Palavras-chave: chemical interaction, composite materials, diffusion, kinetic analysis, phase formation, silicon nitride, thermodynamic analysis
Resumo: Chemical interaction in the TiCSi3N4 system was investigated. Thermodynamic calculations and kinetic analysis were carried out for a number of powder mixtures with various TiC:Si3N4 molar ratios in the temperature range 1300-1750 °C. Stability regions of the TiC-Si3N4 composites were defined. It was shown that the main reaction products are silicon carbide and titanium carbonitride. The overall chemical interaction is described in terms of chemical reaction between titanium carbide and silicon nitride, and the diffusion of carbon and nitrogen through the coherent reaction products layer after completion of the initial direct interaction of the components.
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