C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 41/90 (2006.01) F01D 5/28 (2006.01)
Patent
CA 2745506
A method of smoothing the surface of a ceramic matrix composite part presenting a surface that is undulating and rough. The method comprises forming a ceramic coating on the surface of the part, the coating being made by applying (20) a liquid composition on the surface of the part, the composition containing a ceramic-precursor polymer and a factory solid filler, curing the polymer (40), and transforming (50) the cured polymer into ceramic by heat treatment. The method further comprises impregnating (60) the ceramic coating with a liquid metallic composition.
Un procédé pour le lissage de surface d'une pièce en matériau composite à matrice céramique présentant une surface ondulée et rugueuse. Le procédé comprend Ia formation sur Ia surface de Ia pièce d'un revêtement céramique réalisé par application (20) sur la surface de la pièce d'une composition liquide contenant un polymère précurseur de céramique et une charge solide réfractaire, réticulation du polymère (40), et transformation (50) du polymère réticulé en céramique par traitement thermique. Le procédé comprend en outre Pimprégnatïon du revêtement céramique par une composition métallique liquide (60).
Bouillon Eric
Chateigner Serge
Eberling-Fux Nicolas
Sim & Mcburney
Snecma
Snecma Propulsion Solide
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