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Investigation of Gas-Phase Processes of Obtaining Fiber-Reinforced Organomorphic Ceramic Composites with SiC-Matrix

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Refractories and Industrial Ceramics Aims and scope

The isothermal process of chemical vapor deposition for the densification with a SiC-matrix of organomorphic carbon-fiber preforms obtained by carbonization of compressed fibers of oxidized polyacrylonitrile is investigated. Such preforms are characterized by a high (up to 70%) porosity and uniform pore size (the reduced pore diameter ranges from several micrometers to tens of micrometers). Technological parameters of the process of obtaining ceramic-matrix composites (CMC) were optimized by a combination of experimental studies and numerical simulations. Experimental samples of CMC were obtained using a non-halogen precursor, methylsilane CH3SiH3, and their residual porosity was determined. For the numerical study of the gas-phase process of densification of preforms, a 1D model was used. The simulation results were compared with experimental observations.

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Correspondence to V. I. Kulik.

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Translated from Novye Ogneupory, No. 8, pp. 23 – 30, August 2020.

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Bogachev, E.A., Kulik, V.I., Kulik, A.V. et al. Investigation of Gas-Phase Processes of Obtaining Fiber-Reinforced Organomorphic Ceramic Composites with SiC-Matrix. Refract Ind Ceram 61, 433–440 (2020). https://doi.org/10.1007/s11148-020-00499-9

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  • DOI: https://doi.org/10.1007/s11148-020-00499-9

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