Modified preceramic polymers, method of making and ceramic matrix composite formed therefrom
Disclosed is a modified preceramic polymer having a polymer backbone consisting of silicon or a combination of silicon and carbon; and a pendant modifier bonded to the backbone wherein the modifier includes silicon, boron, aluminum, a transition metal, a refractory metal, or a combination thereof. The modified preceramic polymer can be used to form a ceramic matrix composite.
1. A ceramic matrix composite comprising:
reinforcing fibers and a matrix,
wherein the matrix comprises silicon carbide and metal carbide and
the metal carbide is homogeneously dispersed throughout the silicon carbide; and
wherein the reinforcing fibers include metal fibers, Si 3 N 4 fibers, SiOC fibers, Al 2 O 3 fibers, glass fibers, E-glass fibers, S2 glass fibers, aramid fibers, polyethylene fibers, or combinations thereof.
2. The ceramic matrix composite of claim 1 , further comprising a metal boride.