CVD functionalized particles for CMC applications
AssigneeRtx Corporation
InventorsBrendan M. Lenz, Sarah A. Frith, Olivier H. Sudre
Life of this patent
Estimating the term…
Abstract
A method of manufacturing ceramic matrix composites includes producing chemical vapor deposition functionalized ceramic particles before injecting the functionalized ceramic particles into the CMC fabric. The functionalized ceramic particles are mixed with a binder solution and then dispensed into voids present between adjacent tows of the CMC fabric. Injecting the particles in the center of the voids reduces the size and volume fraction of the voids/defects, improving the homogeneity of surface texture, homogeneity of microstructure, and part model shape conformity.
Claims8
A method of forming a ceramic matrix composite component, the method comprising:
- forming a plurality of ceramic fiber plies;
- selectively applying functionalized ceramic particles into voids within each of the plurality of ceramic fiber plies;
- laying up and debulking a stack of the plurality of ceramic fiber plies including the functionalized ceramic particles;
- and
- subsequently densifying the stack of ceramic fiber plies;
- wherein the functionalized ceramic particles are produced by coating base ceramic particles with a first chemical compound through a chemical vapor deposition or chemical vapor infiltration process;
- wherein the first chemical compound is one or more of silicon carbide (SiC), boron nitride (BN), silicon boron nitride (SiBN), carbon (C), boron carbide (B4C), aluminum nitride (AlN), aluminum oxide (Al2O3), zirconium dioxide (ZrO2), silicon nitride (Si3N4), silicon dioxide (SiO2), and silicon oxycarbide (SiOC).
Dependencies are inferred from the claim text.