The B. F. Goodrich Company

Goodrich Corporation

Other

Mark J Purdy

James Warren Rudolph

Lowell D Bok

Edward Roy Stover

Sharad R Moghe

John Edgar Finley

Wei-Teh Shih

Mark Russell Wolke

James Acker Tallon

Robert J Price

Timothy Patrick Smith

Larry D Bentson

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

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.

Pressure gradient CVI/CVD process

A gas preheater for use in a CVI/CVD furnace that receives a reactant gas from a gas inlet, comprising a sealed baffle structure disposed within the furnace. The sealed baffle structure has a baffle structure inlet and baffle structure outlet. A sealed duct structure is disposed within the furnace, said sealed duct structure being sealed around the gas inlet and said baffle structure such that substantially all of the reaction gas received from the gas inlet is directed to and forced to flow through said sealed baffle structure to said baffle structure outlet.

Apparatus for use with CVI/CVD processes

The invention relates to the field of high temperature composites made by the chemical vapor infiltration and deposition of a binding matrix within a porous structure. More particularly, the invention relates to pressure gradient processes for forcing infiltration of a reactant gas into a porous structure, apparatus for carrying out those processes, and the resulting products. The invention is particularly suited for the simultaneous CVI/CVD processing of large quantities (hundreds) of aircraft brake disks.

Pressure gradient CVI/CVD apparatus, process and product

Pressure gradient CVI/CVD apparatus process and product

The invention relates to apparatus for use in chemical vapor infiltration and deposition (CVI/CVD) processes. More specifically, the invention relates to a preheater for heating a reactant gas inside a CVI/CVD furnace, and a fixture for depositing a matrix within a stack of porous structures by a pressure gradient CVI/CVD process. The invention is particularly suited for the simultaneous CVI/CVD processing of large quantities (hundreds) of aircraft brake disks.

Carbon/carbon composites including those structures formed from a fibrous reinforcement itself formed principally from carbon in a carbon matrix are protected against oxidation by multi-layer sealant system preferably including a multi-layer paint including in its carbonized binder refactory granules and inhibitor particles that form a moisture resistant, viscosity-stabilized borate glass when exposed to a high-temperature, oxidizing environment, and an outer ceramic shell formed by CVI/CVD in situ formation of boron carbide followed by silicon carbide. The paint is prepared by mixing finely divided powders of borate precursor compounds or borate glass frit and refractory granules with a carbon char yielding precursor binder such as phenolic resin or pitch which preferably produces a highly porous structure upon carbonization.

Moisture and oxidation resistant carbon/carbon composites

A carbon and/or ceramic fiber reinforced carbon and/or ceramic matrix composite threaded member including a core, a fiber containing thread-defining element bonded to the exterior of the core and a reinforcing fabric layer securing the thread-defining element to the core. The thread-defining element may be an integral part of a tubular braided reinforcing fabric or applied to the core prior to application of a reinforcing fabric layer. Externally and internally threaded members and methods for their manufacture are described.

Growing community of inventors

Akron, OH, United States of America

Mark J Purdy