Safran Ceramics

Snecma Propulsion Solide

Centre National De La Recherche Scientifique

Herakles

Irt Saint Exupery (aese)

Pascal Diss

Eric Lavasserie

Eric Bouillon

Jacques Thebault

Michel Laxague

Lionel Montagne

Florent Deliane

Natacha Duee

Sofia Perez-Villar

A method for injecting a loaded suspension into a fibrous texture having a three-dimensional or multilayer weaving includes the injection of a suspension containing a powder of solid particles into the volume of the fibrous texture. The injection of the loaded suspension is carried out by at least one hollow needle in communication with a loaded suspension supply device, each needle being movable in at least one direction extending between a first face and a second opposite face of the fibrous texture so as to inject the loaded suspension at one or more determined depths in the fibrous texture.

Method for injecting a loaded suspension into a fibrous texture and method for manufacturing a part made of composite material

A process for manufacturing a fibrous preform filled with particles, includes forming the filled preform by compacting a stack of a plurality of fibrous strata impregnated by a suspension of ceramic oxide particles in a liquid medium, wherein the liquid medium includes at least one compound having a saturated vapor pressure of less than 2.3 kPa at 20&#xb0; C., this compound being present in a weight content of greater than or equal to 30% relative to the total weight of the suspension.

Process for manufacturing a fibrous preform filled with particles

A part made of oxide/oxide composite material includes fiber reinforcement constituted by a plurality of warp yarn layers and of weft yarn layers interlinked by three-dimensional weaving, with the spaces present between the reinforcing yarns being filled with a refractory oxide matrix. The fiber reinforcement presents a weave selected from the following weaves: interlock; multi-plain; multi-satin; and multi-serge, with warp and weft thread counts lying in the range 4 yarns/cm to 20 yarns/cm. The fiber reinforcement also presents a fiber volume fraction lying in the range 40% to 51%.

Part made from oxide/oxide composite material for 3-D reinforcing and method for manufacture of same

A part made of a porous material containing carbon, in particular a C/C composite material, is protected against oxidation by being impregnated with a composition in an aqueous medium containing at least a phosphorous compound, elemental titanium, and boron or a boron compound other than titanium diboride, to form in the presence of oxygen and at least one alkali or alkaline-earth element M that catalyzes oxidation of carbon, at least one P&#x2014;O&#x2014;Ti-M type association bonded by boron oxide BOand trapping the element M.

Protection against the oxidation of composite materials containing carbon

In order to provide a self-healing layer on a composite material part, a composition is applied to the part, the composition containing: a suspension of colloidal silica; boron or a boron compound in powder form; silicon carbide in powder form; and at least one ultra-refractory oxide.

Process for producing a self-healing layer on a part made of a C/C composite

An oxidation-sensitive composite has applied thereto a composition comprising a mixture of boride powder constituted for the most part of TiB , at least one vitreous refractory oxide powder constituted for the most part by a mixture of borosilicate glass, and a binder containing a ceramic-precursor resin. The resin is cured and is subsequently transformed into a ceramic by heat treatment or during first exposure of the coated part to high temperatures.

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Le Haillan, France

Pascal Diss