C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
25/142
C03C 14/00 (2006.01)
Patent
CA 1327117
ABSTRACT OF THE DISCLOSURE The invention provides a method of manufacturing a composite material formed of a fibrous reinforcement and a silica based ceramic or vitro-ceramic matrix using a sol- gel process and hot compression. The method of the invention is characterized in that premature crystallization of the matrix from the sol is delayed by addition to the sol of a crystallization retarding agent. This method makes it possible to obtain well densified composite materials, having a residual porosity less than 10% without adding nucleating agents.
586302
Guette Alain
Lespade Pierre
Menessier Erik
Naslain Roger
Paillier Rene
Aerospatiale Societe Nationale Industrielle
Smart & Biggar
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