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Safran Ceramics

Safran Aircraft Engines

Safran

Jérôme Roger

Jean-Michel Patrick Maurice Franchet

Gilles Charles Casimir Klein

Yann Le Petitcorps

Alexandre Allemand

Alain Largeteau

Seu U-Chan Chung

Laurence Maille

Yann Lepetitcorps

Emilie Mendez

Bernard Reignier

Benoît Sergent

A die or piston of a spark plasma sintering apparatus, wherein the die or piston is made from graphite and the outer surfaces of the die or piston are coated with a silicon carbide layer with a thickness of 1 to 10 micrometres, the silicon carbide layer being further optionally coated with one or more other layer(s) made from a carbide other than silicon carbide chosen from hafnium carbide, tantalum carbide and titanium carbide, the other layer(s) each having a thickness of 1 to 10 micrometres. A spark plasma sintering (SPS) apparatus comprising the die and two of the pistons, defining a sintering, densification or assembly chamber capable of receiving a powder to be sintered, a part to be densified, or parts to be assembled. A method of sintering a powder, densifying a part, or assembling two parts by means of a method of spark plasma sintering (SPS) in an oxidising atmosphere, using the spark plasma sintering (SPS) apparatus.

Die and piston of an SPS apparatus, SPS apparatus comprising same, and method of sintering, densification or assembly in an oxidizing atmosphere using said apparatus

Die and piston of an SPS apparatus, SPS apparatus comprising same, and method of sintering, densification or assembly in an oxidising atmosphere using said apparatus

A method of fabricating a ceramic material, the method including forming a ceramic material by performing a first chemical reaction at least between a first powder of an intermetallic compound and a reactive gas phase, a liquid phase being present around the grains of the first powder during the first chemical reaction, the liquid gas phase being obtained from a second powder of a metallic compound by melting the second powder or as a result of a second chemical reaction between at least one element of the first powder and at least one metallic element of the second powder, a working temperature being imposed during the formation of the ceramic material, which temperature is low enough to avoid melting the first powder.

Method of fabricating a ceramic from a chemical reaction

A method of fabricating a part out of ceramic matrix composite material, the method including infiltrating a fiber preform with a molten composition including a majority by weight of silicon, the fiber preform including silicon carbide fibers, silicon carbide powder being present in the pores of said preform, a mean size of silicon carbide crystallites in the powder being less than the mean size of the silicon carbide crystallites in the fibers, a ceramic matrix being formed in the pores of the fiber preform during the infiltration so as to obtain the part made of composite material.

Method of fabricating a part out of ceramic matrix composite material

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Pessac, France

Jérôme Roger