FREMGANGSMAADE TIL FREMSTILLING AF ET KOMPOSITMATERIALE MED EN VITROKERAMISK ELLER KERAMISK MATRIX VED HJAELP AT EN SOL-GEL-PROCES

Process for the manufacture, by a sol-gel route and compression with heating, of a composite material consisting of a fibrous reinforcement and of a vitro-ceramic or ceramic matrix based on silica. The process of the invention is characterised in that the premature crystallisation of the matrix orig...

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Bibliographische Detailangaben
Hauptverfasser:	MENESSIER, ERIK, PAILLER, RENE, LESPADE, PIERRE, GUETTE, ALAIN, NASLAIN, ROGER
Format:	Patent
Sprache:	dan
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE GLASS JOINING GLASS TO GLASS OR OTHER MATERIALS LIME, MAGNESIA METALLURGY MINERAL OR SLAG WOOL REFRACTORIES SLAG SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS SURFACE TREATMENT OF GLASS TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Process for the manufacture, by a sol-gel route and compression with heating, of a composite material consisting of a fibrous reinforcement and of a vitro-ceramic or ceramic matrix based on silica. The process of the invention is characterised in that the premature crystallisation of the matrix originating from the sol is delayed by the addition of a crystallisation-retarding agent to the sol. This process makes it possible to obtain well-densified composite materials which have a residual porosity of less than 10%, this being done without adding new nucleating agents.