Centre National De La Recherche Scientifique

Universitë De Bordeaux

Safran Ceramics

Commissariat a L'energie Atomique Et Aux Energies Alternatives

Safran Landing Systems

Herakles

Sapran Ceramics

Sylvain Jacques

Eric Bouillon

Arnaud Delehouze

Sébastien Bertrand

Adrien Delcamp

Alexandre Allemand

Franck Lamouroux

Francis Rebillat

Paul Carminati

Laurence Maille

Emilien Buet

Thierry Piquero

Patrice Brender

Caroline Louchet

Anthony Baux

Georges Chollon

Floriane Demeyer

Pierre Fenetaud

Olivier Ledain

A method for manufacturing a part from a first ceramic or from carbon, consolidated by a second ceramic, having a determined geometry, that involves carrying out the following sequence of steps: a) manufacturing a preform made from an organic polymer; b) impregnating the preform made from an organic polymer with a resin that is a precursor of the first ceramic or a resin that is a precursor of carbon; c) crosslinking and/or polymerising, then pyrolysing the resin that is a precursor of the first ceramic or the resin that is a precursor of carbon; to obtain a part made from a first ceramic or from carbon having the same geometry as the part to be manufactured; e) depositing the second ceramic on the part made from a first ceramic or from carbon by means of a chemical vapour deposition or CVD process or a chemical vapour infiltration or CVI process.

Method for manufacturing a consolidated densified part made of ceramic or made of carbon

A method for producing a part having improved resistance to oxidation and high temperature-corrosion, includes the formation of an environmental barrier coating on an at least partially ceramic matrix composite material, the environmental barrier coating being formed by direct liquid injection-metal organic chemical vapor deposition.

Method for manufacturing an environmental barrier

A method for treating a carbon or ceramic yarn includes forming a coating on the yarn in a reaction zone of a reactor by heating a segment of the yarn in the presence of a gas phase in a microwave field, wherein the gas phase includes a mixture of a diluent gas and a coating precursor in the vapor state, and wherein the gas phase is formed at least by introducing the diluent gas into the reactor and mixing the introduced diluent gas with the coating precursor in the reactor before the reaction zone.

Method for depositing a coating on a yarn in a microwave field

A method of fabricating a friction part out of composite material, the method including densifying a carbon yarn fiber preform with a matrix including at least pyrolytic carbon and a ZrOCphase, where 1&#x2264;x&#x2264;2 and 0&#x2264;y&#x2264;1, the matrix being formed by film-boiling or by chemical vapor infiltration from a first precursor for pyrolytic carbon and a second precursor that includes zirconium, the second precursor being a zirconium complex including an alcoxy or carboxylate ligand bonded to zirconium.

Method of fabricating a friction part out of composite material

A composite material part includes fiber reinforcement made of carbon or ceramic yarns and a matrix that is mostly ceramic, the part further including a first interphase layer covering the yarns and present between the yarns and the matrix, the first interphase layer being a layer of boron nitride doped with aluminum and presenting an atom content of aluminum lying in the range 5% to 15%.

Composite material part including an interphase layer of aluminum-doped boron nitride

A part made of ceramic matrix composite material has fiber reinforcement of carbon or ceramic fibers and a majority-ceramic sequenced matrix having first matrix layers made of crack-deflector material alternating with second matrix layers made of ceramic material. An interphase coating is interposed between the fibers and the matrix, and the interphase coating adheres to the fibers and to the matrix, and is formed of at least one sequence constituted by a first elementary layer made of carbon, possibly doped with boron, surmounted by a second elementary layer made of ceramic. The outer elementary interphase layer of the coating is a ceramic layer having an outer surface formed by ceramic grains of size lying essentially in the range 20 nm to 200 nm, with the presence of grains of size greater than 50 nm conferring roughness on the outer surface ensuring mechanical attachment with the adjacent matrix phase.

Ceramic matrix composite material part

Growing community of inventors

Talence, France

Sylvain Jacques