Societe Europeenne De Propulsion

Societe Nationale D'etude Et De Construction De Moteurs D'aviation-snecma

Societe Europeene De Propulsion

Yves D Patrigeon

Michel C Vives

Jacques Thebault

Christian Robin-Brosse

Jean-Luc Domblides

Gilles Bondieu

Denis Sabaca

The present invention provides a method of densifying porous structures by chemical vapor infiltration. In characteristic manner, said densification method is implemented using toluene as a precursor for carbon. Said toluene is generally used mixed with at least one carrier gas.

CVI (chemical vapor infiltration) densification of porous structures

The shaping of the fibrous texture is at least partly achieved by applying a deformable layer or strip, such as a cloth, made from a material having a thermal expansion coefficient different from that of the material constituting the fibrous texture. The layer or strip is stretched over the fibrous texture or is held in position against the texture by being wound over in order to obtain the degree of compaction wanted for the fibrous texture. The texture is densified by chemical vapor infiltration of the material constituting the matrix of the composite.

Method for shaping a fibrous reinforcement texture used in the

The invention relates to the manufacture of a composite material part by shaping a fibrous reinforcement texture and densifying the texture by chemical vapor infiltration of the material constituting the matrix of the composite through the porosity of the texture. Before densification, the texture is separated from an adjacent structure, such as an adjacent surface of a tool (12, 14) inside which the texture is held, or another texture, by means of an inserted layer (10) of fabric produced in a refractory material having a thermal expansion coefficient different from that of the constituent material of the texture.

Method for the manufacture of a composite material part

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Bordeaux Cauderan, France

Yves D Patrigeon