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| Number | Title | Issue Date |
| 8142845 | Process for the manufacturing of dense silicon carbide A method of producing a densified SiC article is provided. Near-net shape porous silicon carbide articles are produced and densified using the developed method. A substantial number of pores within the porous near-net shape silicon carbide article are filled (impreg... | 03/27/2012 |
| 8057855 | Non-pressure gradient single cycle CVI/CVD apparatus and method 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 r... | 11/15/2011 |
| 8039053 | Method for making a part of composite material with ceramic matrix and resulting part An interphase coating is formed by chemical vapor infiltration (CVI) on the fibers constituting a fiber preform, the interphase coating comprising at least an inner layer in contact with the fibers for embrittlement relief to the composite material, and an outer lay... | 10/18/2011 |
| 7959973 | Pressure swing CVI/CVD Method of chemical vapor infiltration of a deposable carbon material into a porous carbon fiber preform in order to densify the carbon fiber preform. The method includes the steps of: situating the porous carbon fiber preform in the reaction zone; providing a linear... | 06/14/2011 |
| 7919143 | Carrier for receiving an object and method for the production of a carrier A carrier for an object, preferably a substrate of a semiconductor component such as a wafer, includes a receiving element for the object and gas outlets arranged below the receiving element along the object received. At least sections of the carrier are made of a m... | 04/05/2011 |
| 7799375 | Process for the manufacturing of dense silicon carbide A method of producing a densified SiC article is provided. Near-net shape porous silicon carbide articles are produced and densified using the developed method. A substantial number of pores within the porous near-net shape silicon carbide article are filled (impreg... | 09/21/2010 |
| 7727591 | Controlling or modeling a chemical vapor infiltration process for densifying porous substrates with carbon A load comprising one or more porous substrates (10) for densification is heated in an oven into which a reaction gas containing at least one carbon-precursor hydrocarbon is admitted, the effluent gas being extracted from the oven via an extraction pipe (2... | 06/01/2010 |
| 7691443 | Non-pressure gradient single cycle CVI/CVD apparatus and method 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 condition... | 04/06/2010 |
| 7666475 | Method for forming interphase layers in ceramic matrix composites A method for forming interphase layers in ceramic matrix composites. The method forms interphase layers in ceramic matrix composites thereby enabling higher matrix densities to be achieved without sacrificing crack deflection and/or toughness. The methods of the pre... | 02/23/2010 |
| 7662437 | Template for arranging spacers on a preform and method of densifying a preform including the use of spacers positioned by a template A template (10) configured for use with an annular preform (26) having a periphery (32) and an inner opening (34), the template (10) having an annular body with an outer periphery (16) and an inner opening (18) and a ... | 02/16/2010 |
| 7476419 | Method for measurement of weight during a CVI/CVD process 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... | 01/13/2009 |
| 7419700 | Nanoparticle-modified carbon-ceramic brake discs Carbon-ceramic brake discs, the remaining porosity in which, after infiltration with a carbide-forming element and reaction of this element with at least part of the carbon in the preliminary body of the carbon-ceramic brake disc to form carbides, is at least partly... | 09/02/2008 |
| 7384663 | Method of making a three-dimensional fiber structure of refractory fibers Carbon nanotubes are incorporated in the fiber structure by growing them on the refractory fibers of the substrate so as to obtain a three-dimensional substrate made of refractory fibers and enriched in carbon nanotubes. The substrate is densified with a matrix to f... | 06/10/2008 |
| 7338684 | Vapor grown carbon fiber reinforced composite materials and methods of making and using same A process for producing-vapor grown carbon fiber (VGCF) reinforced continuous fiber performs for the manufacture of articles with useful mechanical, electrical, and thermal characteristics is disclosed. Continuous fiber preforms are treated with a catalyst or cataly... | 03/04/2008 |
| 7332195 | Chemical vapor deposition method Method for densifying a porous carbon preform (5). The method includes the steps of: (a) providing the apparatus (11); (b) charging the apparatus (11) with a plurality of stacks of annular porous carbon preforms (5), the preforms being se... | 02/19/2008 |
| 7306826 | Use of biased fabric to improve properties of SiC/SiC ceramic composites for turbine engine components A method for making a ceramic matrix composite turbine engine component, wherein the method includes providing a plurality of biased ceramic plies, wherein each biased ply comprises ceramic fiber tows, the tows being woven in a first warp direction and a second weft... | 12/11/2007 |
| 7297368 | Method of making carbon fiber-carbon matrix reinforced ceramic composites A method of making a carbon fiber-carbon matrix reinforced ceramic composite wherein the result is a carbon fiber-carbon matrix reinforcement is embedded within a ceramic matrix. The ceramic matrix does not penetrate into the carbon fiber-carbon matrix reinforcement... | 11/20/2007 |
| 7290667 | Microfluidic sieve using intertwined, free-standing carbon nanotube mesh as active medium A microfluidic sieve having a substrate with a microfluidic channel, and a carbon nanotube mesh. The carbon nanotube mesh is formed from a plurality of intertwined free-standing carbon nanotubes which are fixedly attached within the channel for separating, concentra... | 11/06/2007 |
| 7270851 | Method for nanoencapsulation of aerogels and nanoencapsulated aerogels produced by such method A method for increasing the compressive modulus of aerogels comprising: providing aerogel substrate comprising a bubble matrix in a chamber; providing monomer to the chamber, the monomer comprising vapor phase monomer which polymerizes substantially free of polymeri... | 09/18/2007 |
| 7252860 | Process for producing a high temperature stable fiber reinforced ceramic A process is disclosed for producing a high temperature stable fiber composite ceramic by chemical vapor infiltration (CVI) with a silicon carbide precursor in a suitable carrier gas on carbon fiber preforms or silicon carbide fiber preforms. This process is charact... | 08/07/2007 |
| 7241470 | Method for monitoring the course of a process using a reactive gas containing one or several hydrocarbons The method applies to a process such as cementation or chemical vapor infiltration or deposition, the process being carried out in an oven and the method comprising setting operating parameters of the oven, introducing a reagent gas into the oven, the reagent gas co... | 07/10/2007 |
| 7238308 | Process for the infiltration of porous carbon composites A process form producing ceramic composites comprising metal carbides, which comprises the steps production of a porous carbon-containing intermediate body, infiltration of the intermediate body with the melt of a carbon-forming metal, reaction of at least part of t... | 07/03/2007 |
| 7211605 | Super-hydrophobic fluorine containing aerogels An aerogel material with surfaces containing fluorine atoms which exhibits exceptional hydrophobicity, or the ability to repel liquid water. Hydrophobic aerogels are efficient absorbers of solvents from water. Solvents miscible with water are separated from it becau... | 05/01/2007 |
| 7182980 | Chemical vapor infiltration method for densifying porous substrates having a central passage Annular substrates (20) are stacked in an enclosure where they define an inside volume (24) and an outer volume (26) outside the stack. A gas containing at least one precursor of a matrix material to be deposited within the pores of the substrat... | 02/27/2007 |
| 7169437 | Method of coating an anode/collector with carbon nanotubes The electron impact surface of an anode/collector is coated with a carbon nanotube coating to reduce the production of secondary electrons and, concomitantly, to suppress the formation of neutral gases and plasma. A carbonizable resin is first applied to the electro... | 01/30/2007 |
| 7160618 | Antioxidant system for carbon—carbon brake materials with enhanced resistance to humidity exposure Method of improving humidity resistance in a coated article (19) comprising a carbon-carbon composite component (10), a graphite component (10), or a ceramic matrix composite component based on carbon fibers and/or graphite (10). The comp... | 01/09/2007 |
| 7153543 | Refractory-carbon composite brake friction elements Refractory carbide particles are located in a defined area of a matrix, specifically silicon carbide particles are encapsulated within a porous matrix or carbon precursor, by locating particles of refractory carbide-forming material or a precursor thereof in a defin... | 12/26/2006 |
| 7060134 | One piece shim A one-piece or otherwise unitary annular shim member made from a carbon material or a metallic is used to maintain a space between stacked annular preforms during a manufacturing process, such as densification. The one-piece structure advantageously simplifies the a... | 06/13/2006 |
| 7012035 | Fibre composite ceramic with a high thermal conductivity Material from a fibre composite ceramic, constructed from a) a dense fabric or cluster of three-dimensional oriented fibres with a high thermal conductivity, b) a crystalline matrix of β-silicon carbide, that is produced in a CVI process o... | 03/14/2006 |
| 6991847 | Light emitting photonic crystals The invention relates to processes for the synthesis of 2-D and 3-D periodic porous silicon structures and composites with improved properties having the advantages of porous silicon and photonic bandgap materials. Photonic crystals comprise a two dimensionally peri... | 01/31/2006 |
| 6953605 | Method for densifying porous substrates by chemical vapour infiltration with preheated gas A method for densification of porous by CVI in which substrates are loaded into a loading zone of an oven and heated to a temperature at which a desired matrix material is formed from a precursor gas(es). A reative gas containing the precursor gas(es) is admitted in... | 10/11/2005 |
| 6942893 | Densifying hollow porous substrates by chemical vapor infiltration A porous substrate having a concave inside face and an outside face is disposed in an enclosure, and reactive gas is introduced into the enclosure to densify the substrate. At least a portion of the gas is divided into two non-zero fractions. The first fraction of t... | 09/13/2005 |
| 6926925 | Method of making a continuous coating on the surface of a part A method and apparatus for a continuous coating of a part may include providing a separation layer made of a material that is weaker than the material of the coating to be made. The part may be placed on one or more supports, the supports coated with the separation ... | 08/09/2005 |
| 6846514 | Gas port sealing for CVD/CVI furnace hearth plates A method and apparatus for sealing gas ports in CVD/CVI furnaces and processes is disclosed. A fluid direction nozzle (160) is positioned between a top lip (101) of a gas inlet port (100) delivering a reactant gas (G) to a furnace compartment( | 01/25/2005 |
| 6780462 | Pressure gradient CVI/CVD process 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 th... | 08/24/2004 |
| 6756122 | Process for the production of improved boron coatings Improved articles of manufacture are disclosed, together with methods for preparing such articles, whereby the surface of a graphite or comparable substrate is first densified with carbon to reduce surface porosity while still retaining sufficient surface texture to... | 06/29/2004 |
| 6730364 | Preparation of carbon molecular sieve membranes on porous substrate A method for preparing carbon molecular sieve membrane is invented. A thin carbon-containing film is first deposited on a porous substrate. The thin film is then bombarded by high energy ions for surface modification. The surface modified film is then baked or calci... | 05/04/2004 |
| 6723382 | Method for fabricating ceramic matrix composite A method for fabricating a CMC (Ceramic Matrix Composite) article, comprising: performing a CVI (Chemical Vapor Infiltration) treatment for forming a SiC matrix layer on the surface of a woven fabric; performing a machining process, after the CVI treatment, for mach... | 04/20/2004 |
| 6723381 | Method and apparatus for manufacturing ceramic-based composite member An organic silicon polymer is infiltrated and charged into gaps in a matrix phase of a formed fiber fabric, and its airtightness is increased by (a) CVI infiltration process 2 for forming the SIC matrix phase on the surface of the fiber fabric formed, (b) pre... | 04/20/2004 |
| 6713424 | Method of making fluid diffusion layers and electrodes having reduced surface roughness The present methods make fluid diffusion layers having reduced surface roughness. The methods used for adhering the loading material to the substrate surface can reduce the average surface roughness of the fluid diffusion layers, thereby reducing leaks in and damage... | 03/30/2004 |
