Method for combined desizing and interface coating of fibers for ceramic matrix composites
AssigneeUnited Technologies Corporation
InventorsPaul Sheedy, Neal Magdefrau
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Abstract
A method of preparing a fiber for use in forming a ceramic matrix composite material comprises the steps of removing an organic sizing from a fiber to provide pyrolyzed remnants on the fiber, and using the pyrolyzed remnants as a reactant to provide an interface coating on the fiber.
Claims19
A method of preparing a fiber for use in forming a ceramic matrix composite material comprising the steps of:
- removing an organic sizing from a fiber to provide pyrolyzed remnants on the fiber, the pyrolyzed remnants including residual carbon;
- using the pyrolyzed remnants as a reactant to provide an interface coating on the fiber;
- and
- performing a heat treatment to create the interface coating, wherein the heat treatment occurs in a vacuum or in nitrogen.
A method of preparing a fiber for use in forming a ceramic matrix composite material comprising the steps of:
- removing an organic sizing from a fiber to provide pyrolyzed remnants on the fiber, wherein the organic sizing comprises a polymer based coating, and wherein the polymer based coating further comprises carbon nanotubes;
- and
- using the pyrolyzed remnants as a reactant to provide an interface coating on the fiber.
A method of preparing a fiber for use in forming a ceramic matrix composite material comprising the steps of:
- removing an organic sizing from a fiber to provide pyrolyzed remnants on the fiber, wherein the organic sizing comprises a polymer based coating, and wherein the polymer based coating further comprises select inorganic additives or catalysts;
- and
- using the pyrolyzed remnants as a reactant to provide an interface coating on the fiber.
A method of preparing a fiber for use in forming a ceramic matrix composite material comprising the steps of:
- removing an organic sizing from a fiber to provide pyrolyzed remnants on the fiber;
- using the pyrolyzed remnants as a reactant to provide an interface coating on the fiber;
- performing a heat treatment with a material comprising a solid species that includes at least boron to create the interface coating, and wherein the heat treatment occurs in nitrogen.
A method of forming a ceramic matrix composite material comprising the steps of:
- removing an organic sizing from a fiber to provide pyrolyzed remnants on the fiber, wherein the pyrolyzed remnants include residual carbon;
- using the pyrolyzed remnants as a reactant to provide an interface coating on the fiber;
- performing a heat treatment with a boron based solid species to create the interface coating, wherein the heat treatment occurs in a vacuum or in nitrogen;
- and
- forming a ceramic matrix composite from fibers having the interface coating.
A method of preparing a fiber for use in forming a ceramic matrix composite material comprising the steps of:
- removing a polymer based sizing from a ceramic fiber to provide residual carbon on the fiber;
- using the residual carbon as a reactant to provide an interface coating on the fiber;
- and
- performing a heat treatment to produce the interface coating, wherein the heat treatment occurs in a vacuum.
A method of preparing a fiber for use in forming a ceramic matrix composite material comprising the steps of:
- removing a polymer based sizing from a ceramic fiber to provide residual carbon on the fiber;
- using the residual carbon as a reactant to provide an interface coating on the fiber;
- and
- performing a heat treatment with a boron based solid species to create the interface coating, wherein the heat treatment occurs in nitrogen at a temperature of approximately 1450° Celsius or less to form the interface coating as a boron (carbon) nitrogen coating.
Dependencies are inferred from the claim text.