Patent ID: 8980027
Filing Date: 2015-03-17
Classification: B82Y,C04B,Y10T

Abstract:
1. A method of fabricating a part of composite material having a fiber reinforcement densified with a ceramic matrix, the method comprising the steps of: forming a three-dimensional porous fiber structure to constitute the fiber reinforcement for the part to be fabricated; providing a suspension of powders in a liquid, the powders having a mean dimension of less than 1 μm and including powder of at least one boron-containing compound and powder of at least one of carbon, silicon carbide and titanium carbide; contacting said three-dimensional porous fibrous structure with said suspension to introduce said powders into the pores of the previously formed three-dimensional porous fiber structure; and forming at least a main fraction of the matrix by chemical reaction between at least a portion of said powders and at least one delivered additional element selected from silicon and titanium, with both silicon and titanium being present in said powders and at least one delivered additional element taken together; said chemical reaction being achieved by infiltrating the fiber structure with at least one of molten silicon, molten titanium and molten titanium-containing alloy, in order to form a matrix comprising at least one healing discontinuous matrix phase from said boron compound and at least one crack-deflecting discontinuous matrix phase of Ti