RU96110215A - METHOD FOR CHEMICAL INFILTRATION IN THE STEAM PHASE OF MATERIAL IN THE ENVIRONMENT OF A FIBROUS SUBSTRATE - Google Patents

METHOD FOR CHEMICAL INFILTRATION IN THE STEAM PHASE OF MATERIAL IN THE ENVIRONMENT OF A FIBROUS SUBSTRATE

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Publication number
RU96110215A
RU96110215A RU96110215/03A RU96110215A RU96110215A RU 96110215 A RU96110215 A RU 96110215A RU 96110215/03 A RU96110215/03 A RU 96110215/03A RU 96110215 A RU96110215 A RU 96110215A RU 96110215 A RU96110215 A RU 96110215A
Authority
RU
Russia
Prior art keywords
substrate
fibrous structure
transverse
inductor
thermal conductivity
Prior art date
Application number
RU96110215/03A
Other languages
Russian (ru)
Other versions
RU2125031C1 (en
Inventor
Кристэн Франсуа
Original Assignee
Сосьете Эропеен де Пропюльсьон
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from FR9312805A external-priority patent/FR2711645B1/en
Application filed by Сосьете Эропеен де Пропюльсьон filed Critical Сосьете Эропеен де Пропюльсьон
Publication of RU96110215A publication Critical patent/RU96110215A/en
Application granted granted Critical
Publication of RU2125031C1 publication Critical patent/RU2125031C1/en

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Claims (6)

1. Способ химической инфильтрации в паровой фазе материала в среду волокнистого субстрата, состоящего из электропроводящих волокон, включающий следующие этапы: помещение субстрата в камеру, нагрев субстрата за счет прямой электромагнитной связи между индуктором и субстратом, с образованием градиента температуры в среде субстрата, имеющего более высокое значение в частях, удаленных от наружных поверхностей субстрата, по сравнению с его поверхностью, и подачу в камеру реакционной газовой фазы предшественника инфильтруемого материала, образованию которого создают благоприятные условия в частях субстрата с более высокой температурой, отличающийся тем, что субстрат формируют из волокнистой структуры, в которой отношение ρr/ρc между поперечным электрическим сопротивлением и продольным электрическим сопротивлением равно по меньшей мере 1,3, а отношение λr/λc между поперечной теплопроводностью и продольной теплопроводностью не превышает 0,9 и субстрат полностью размещают в поле, продуцируемом индуктором, причем субстрат и индуктор занимают фиксированное положение по отношению друг к другу.1. The method of chemical infiltration in the vapor phase of the material into the medium of a fibrous substrate, consisting of electrically conductive fibers, comprising the following steps: placing the substrate in the chamber, heating the substrate due to direct electromagnetic coupling between the inductor and the substrate, with the formation of a temperature gradient in the medium of the substrate having more a high value in parts remote from the outer surfaces of the substrate, compared with its surface, and the feed into the chamber of the reaction gas phase of the precursor of the infiltrated material, about mations which creates favorable conditions in the parts of the substrate to a higher temperature, characterized in that the substrate is formed from a fibrous structure in which the ratio ρ r / ρ c between the transverse and longitudinal electrical resistivity electrical resistance is at least 1.3, and the ratio λ r / λ c between the transverse thermal conductivity and the longitudinal thermal conductivity does not exceed 0.9 and the substrate is completely placed in the field produced by the inductor, and the substrate and inductor occupy a fixed position relative to to each other. 2. Способ по п.1, отличающийся тем, что субстрат формирут из волокнистой структуры типа войлока, имеющей объемное содержание волокон по меньшей мере равное 20%. 2. The method according to claim 1, characterized in that the substrate is formed from a fibrous structure of the type of felt having a volumetric fiber content of at least 20%. 3. Способ по п.2, отличающийся тем, что объемное содержание волокон в субстрате выдерживают по меньшей мере равным 25%. 3. The method according to claim 2, characterized in that the volumetric content of fibers in the substrate is maintained at least equal to 25%. 4. Способ по любому из пп.1 - 3, отличающийся тем, что субстрат формируют в виде двумерной структуры, намотанной перекрывающимися слоями и сбитой в войлок. 4. The method according to any one of claims 1 to 3, characterized in that the substrate is formed in the form of a two-dimensional structure, wound with overlapping layers and knitted into a felt. 5. Способ по любому из пп.1 - 4, отличающийся тем, что поперечное электрическое сопротивление волокнистой структуры, составляющей субстрат, обеспечивают в пределах между 1 и 20 м • Ом/см. 5. The method according to any one of claims 1 to 4, characterized in that the transverse electrical resistance of the fibrous structure constituting the substrate is provided between 1 and 20 m • Ohm / cm. 6. Способ по любому из пп.1 - 5, отличающийся тем, что поперечную теплопроводность волокнистой структуры, составляющей субстрат, поддерживают в пределах между 0,1 и 20 Вт/(м•К). 6. The method according to any one of claims 1 to 5, characterized in that the transverse thermal conductivity of the fibrous structure constituting the substrate is maintained between 0.1 and 20 W / (m • K).
RU96110215A 1993-10-27 1994-09-14 Method of vapor-phase chemical infiltration of material into bulk of fibrous substrate RU2125031C1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9312805A FR2711645B1 (en) 1993-10-27 1993-10-27 Method of chemical vapor infiltration of a material within a fibrous substrate with establishment of a temperature gradient therein.
FR9312805 1993-10-27
PCT/FR1994/001075 WO1995011869A1 (en) 1993-10-27 1994-09-14 Chemical vapour infiltration process of a material within a fibrous substrate with creation of a temperature gradient in the latter

Publications (2)

Publication Number Publication Date
RU96110215A true RU96110215A (en) 1998-07-20
RU2125031C1 RU2125031C1 (en) 1999-01-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU96110215A RU2125031C1 (en) 1993-10-27 1994-09-14 Method of vapor-phase chemical infiltration of material into bulk of fibrous substrate

Country Status (8)

Country Link
EP (1) EP0725768B1 (en)
JP (1) JP3574133B2 (en)
CA (1) CA2174309C (en)
DE (1) DE69408336T2 (en)
FR (1) FR2711645B1 (en)
RU (1) RU2125031C1 (en)
UA (1) UA29487C2 (en)
WO (1) WO1995011869A1 (en)

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US5348774A (en) * 1993-08-11 1994-09-20 Alliedsignal Inc. Method of rapidly densifying a porous structure
FR2754813B1 (en) * 1996-10-18 1999-01-15 Europ Propulsion DENSIFICATION OF POROUS SUBSTRATES DISPOSED IN ANNULAR CELLS BY CHEMICAL VAPOR INFILTRATION WITH TEMPERATURE GRADIENT
RU2123486C1 (en) * 1998-06-10 1998-12-20 Шебанов Сергей Михайлович Method of producing uniformly densified materials
FR2821859B1 (en) 2001-03-06 2004-05-14 Snecma Moteurs PROCESS FOR THE DENSIFICATION BY CHEMICAL VAPOR INFILTRATION OF POROUS SUBSTRATES HAVING A CENTRAL PASSAGE
UA84862C2 (en) 2003-03-03 2008-12-10 Месье-Бугатти Substrate
FR2881145B1 (en) * 2005-01-24 2007-11-23 Snecma Propulsion Solide Sa METHOD OF GAS PHASE CHEMICAL INFILTRATION FOR THE DENSIFICATION OF POROUS SUBSTRATES WITH PYROLYTIC CARBON
KR101483315B1 (en) * 2006-10-29 2015-01-15 메씨어-부가띠-다우티 Methods of densification of porous products
FR2934014B1 (en) * 2008-07-17 2011-05-13 Snecma Propulsion Solide PROCESS FOR PRODUCING A PIPE OR DIVERGENT OF TUBE IN COMPOSITE MATERIAL
US20110064891A1 (en) * 2009-09-16 2011-03-17 Honeywell International Inc. Methods of rapidly densifying complex-shaped, asymmetrical porous structures
FR2968001B1 (en) * 2010-11-26 2015-11-20 Messier Bugatti METHOD FOR PRODUCING A THREE-DIMENSIONAL FIBROUS PREFORM FOR THE MANUFACTURE OF AN ANNULAR PIECE OF CARBON-CARBON COMPOSITE MATERIAL
CN108048817A (en) * 2017-12-12 2018-05-18 湖南顶立科技有限公司 A kind of chemical vapor deposition stove
RU2747635C1 (en) * 2019-12-11 2021-05-11 Акционерное общество "Уральский научно-исследовательский институт композиционных материалов" Method for producing products from carbon-carbon composite material in shell form
FR3112797B1 (en) * 2020-07-24 2022-12-02 Safran Ceram Process for treating a residual gaseous phase resulting from a CVI technique

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FR2427197A1 (en) * 1978-05-30 1979-12-28 Europ Propulsion Carbon or graphite fibre reinforced carbon bodies - of more uniform density by applying pressure to fibre mat in regions less accessible to vapour
SU759491A1 (en) * 1978-08-01 1980-08-30 Aleksandr V Emyashev Method of treatment of refractory fibrous material articles
FR2584106B1 (en) * 1985-06-27 1988-05-13 Europ Propulsion METHOD FOR MANUFACTURING THREE-DIMENSIONAL STRUCTURES BY NEEDLEING PLANE LAYERS OF SUPERIMPOSED FIBROUS MATERIAL AND FIBROUS MATERIAL USED FOR THE IMPLEMENTATION OF THE PROCESS
FR2584107B1 (en) * 1985-06-27 1988-07-01 Europ Propulsion METHOD FOR MANUFACTURING THREE-DIMENSIONAL REVOLUTION STRUCTURES BY NEEDLEING LAYERS OF FIBROUS MATERIAL AND MATERIAL USED FOR THE IMPLEMENTATION OF THE PROCESS
FR2594119B1 (en) * 1986-02-10 1988-06-03 Europ Propulsion INSTALLATION FOR CHEMICAL VAPOR INFILTRATION OF A REFRACTORY MATERIAL OTHER THAN CARBON
FR2670507B1 (en) * 1990-12-18 1993-12-31 Propulsion Ste Europeenne CHEMICAL STEAM INFILTRATION PROCESS.

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