Enea Ente Per Le Nuove Technologie, L'energia E L'ambiente

Gianni D'Alessandro

Aldo Donato

Stefano Martelli

Carlo Alberto Nannetti

Amedeo Masci

Sabina Botti

Sergio Casadio

Elisabetta Borsella

Antonio Alessandro Licciulli

Alberto Ortona

Ceramic matrix composites (CMC) of high density, preferably of the type SiC/SiC, are provided by a production process based on the infiltration of ceramic fiber cloths with a polymeric precursor solution containing, as fillers, inert powders having size much lower than the mean distance among the ceramic fibers which are used as basic material for the manufacturing of CMC, typically a nanometric granulometry. Such step is followed by the steps of hardening the cloths, pyrolysis of the polymer and repeated thickenings until the desired density is reached. A possible alternative process comprises a brief (&lt;24 hours) treatment of infiltration of SiC from the vapor phase (CVI) with precursors and typical operative parameters for the deposition of silicon carbide followed by the repeated thickenings.

Process for producing ceramic matrix composites by liquid infiltration

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Bracciano, Italy

Gianni D'Alessandro