Goodrich Corporation

The B. F. Goodrich Company

Other

Goodrich Corpration

James Warren Rudolph

Mark J Purdy

John S Linck

Lowell D Bok

Vincent R Fry

Jerry S Lee

Dennis T Garn

Dary Zeigler

Ying She

Zissis A Dardas

Brian St Rock

Thomas P Filburn

David Eric Daws

Robert A Fiala

Afshin Bazshushtari

Christopher T Kirkpatrick

Paul Perea

Atta Khan

John Edgar Finley

Mark Russell Wolke

Chris T Kirkpatrick

Timothy Patrick Smith

Jose Del Real

Darren Welson

Scott William Stevens

Richard Jones

David E Daws

A method of manufacturing a carbon structure can comprise: infiltrating the carbon structure with a silicon oxycarbide (SiOC) precursor sol; and densifying the carbon structure by chemical vapor infiltration (CVI) to form a carbon and ceramic matrix composite material, the carbon and ceramic matrix composite material comprising between 0% and 15% by weight of a plurality of ceramic particles from the ceramic compound, densifying the carbon structure including adjusting a temperature gradient across the carbon structure.

Carbon/carbon composites and methods of making carbon/carbon composites having increased wear life

A carbon/carbon brake disk is provided. The carbon/carbon brake disk may comprise a carbon fiber, wherein the carbon fiber is formed into a fibrous network, wherein the fibrous network comprises carbon deposited therein. The carbon fiber may undergo a FHT process, wherein micro-cracks are disposed in the carbon fiber. In various embodiments, the micro-cracks may be at least partially filled with un-heat-treated carbon via a final CVD process, wherein the final CVD process is performed at a temperature in the range of up to about 1,000&#xb0; C. (1,832&#xb0; F.) for a duration in the range from about 20 hours to about 100 hours. In various embodiments, the un-heat-treated carbon may be configured to prevent oxygen, moisture, and/or oxidation protection systems (OPS) chemicals from penetrating the carbon/carbon brake disk. In various embodiments, the final CVI/CVD process may be configured to increase the wear life of the carbon/carbon brake disk.

Systems and methods for producing a carbon composite material

A method of densifying an annular porous structure comprises stacking a plurality of annular porous structures to form a porous structure stack in a graphite susceptor, wherein the graphite susceptor is disposed within a vessel. The method includes disposing a graphite panel within the graphite susceptor and located radially inward from the porous structure stack. The method includes flowing a reactant gas into the vessel.

Method and apparatus for decreasing the radial temperature gradient in CVI/CVD furnaces

A method of treating a carbon/carbon composite is provided. The method may include infiltrating a carbonized fibrous structure with hydrocarbon gas to form a densified fibrous structure. The method may include treating the densified fibrous structure with heat at a first temperature range from about 1600 to about 2400&#xb0; C. to form a heat treated densified fibrous structure. The method may include infiltrating the heat treated densified fibrous structure with silicon to form a silicon carbide infiltrated fibrous structure.

Systems and methods for carbon structures incorporating silicon carbide

A process for densifying an annular porous structure comprising flowing a reactant gas into an inner diameter (ID) volume and through an ID surface of the annular porous structure, flowing the reactant gas through an outer diameter (OD) surface of the annular porous structure and into an OD volume, flowing the reactant gas from the OD volume through the OD surface of the annular porous structure, and flowing the reactant gas through an ID surface of the annular porous structure and into the ID volume.

Systems for modifying pressure differential in a chemical vapor process

A process and an apparatus for densifying a porous structure is disclosed. The porous structure comprises a first surface, a second surface, an inner diameter surface and an outer diameter surface. The process may comprise progressive densification in conjunction with thermal gradient and/or pressure gradient densification processes.

Process and apparatus for making composite structures

A method and apparatus for decreasing the radial temperature gradient in CVI/CVD furnaces is provided. The apparatus may comprise a graphite susceptor disposed within a vessel. Porous structures may be stacked within the graphite susceptor. The stack of porous structures may form a circular shape proximate a radially inward surface of the graphite susceptor. Graphite panels may be disposed within the graphite susceptor. The graphite panels may be located proximate a radially inward surface of the porous structures. The graphite panels may radiate heat radially outward and towards the graphite susceptor. Reactant gas may be flowed into the graphite susceptor.

Methods for modifying pressure differential in a chemical vapor process

A process for densifying porous structures inside a furnace using non-pressure gradient CVI/CVD includes disposing a number of porous structures in a stack within a furnace. The stack has a center opening region extending through the porous structures and an outer region extending along the outside of the porous structures. Channels provide fluid communication between the center opening region and the outer region. A first portion of a gas composition is introduced to the center opening region. A second portion of the gas composition is introduced to the outer region. The porous structures are densified from an average density of less than 0.60 g/cmto an average density of greater than 1.70 g/cmin a single cycle of non-pressure gradient CVI/CVD.

Non-pressure gradient single cycle CVI/CVD apparatus and method

A pressure gradient CVI/CVD process includes providing a furnace defining an outer volume. Porous structures and ring-like spacers are assembled in a stack with a ring-like spacer between each adjacent pair of porous structures. The stack of porous structures is disposed between a bottom plate and a top plate in the furnace, wherein the bottom plate, the stack of porous structures, and the ring-like spacers define an enclosed cavity. A channel provides fluid communication between the enclosed cavity and the outer volume. A gas composition is introduced into the enclosed cavity. A portion of the gas composition flows through the channel. A pressure gradient is maintained between the enclosed cavity and the outer volume. The gas composition in the outer volume is provided at a pressure of at least about 15 torr. The porous structures are densified.

Pressure gradient CVI/CVD process

A method for densifying porous structures inside a furnace using non-pressure gradient CVI/CVD in a single cycle is described. A hardware assembly for use in the single cycle non-pressure gradient CVI/CVD process is provided as well are process and process conditions are described.

A method of chemical vapor infiltration and deposition includes stacking a number of porous structures in a stack in a furnace. The stack has a center opening region extending through the porous structures and an outer region extending along the porous structures. A first portion of a reactant gas is introduced to the center opening region. A second portion of the reactant gas is introduced to the outer region. The first portion and the second portion are controlled proportions thereby introducing predetermined portions of the reactant gas to both the center opening region and the outer region. The change in weight of the entire furnace, including contents, is measured during the chemical vapor infiltration and deposition process. The rate of weight change is monitored.

Method for measurement of weight during a CVI/CVD process

An apparatus and method for densifying porous structures inside a furnace using pressure gradient CVI/CVD. The apparatus includes a stack of porous structures where each porous structure has an aperture therethrough. The apparatus also includes at least one ring-like spacer disposed within the stack of porous structures between neighboring porous structures. The ring-like spacer encircles the apertures of the neighboring porous structures. The stack of porous structures and the at least one ring-like spacer define an enclosed cavity including each porous structure aperture. A channel provides fluid communication between the enclosed cavity and an outer volume defined by the interior surface of the furnace.

Pressure gradient CVI/CVD apparatus and method

The invention relates to pressure gradient processes for forcing infiltration of a reactant gas into a porous structure. The process comprises the steps of partially densifying a porous structure with a pressure gradient CVI/CVD process in which a first potion of the porous structure is subjected to greater pressure than a second portion of the porous structure. The process is suited for the simultaneous CVI/CVD processing of large quantities of aircraft brake.

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Colorado Springs, CO, United States of America

James Warren Rudolph