EP0489637A1 - Verfahren zur Fabrikation einer faserigen Rohrform gebildet aus feuerfesten Fasern zur Herstellung eines Verbundwerkstoffes - Google Patents

Verfahren zur Fabrikation einer faserigen Rohrform gebildet aus feuerfesten Fasern zur Herstellung eines Verbundwerkstoffes Download PDF

Info

Publication number: EP0489637A1
Authority: EP; European Patent Office
Prior art keywords: staple fibers; covering; fibers; preform; yarn
Prior art date: 1990-12-03
Legal status (The legal status 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 status listed.): Granted

Application number

EP91403260A

Other languages

English (en)

French (fr)

Other versions

EP0489637B1 (de

Inventor

Pierre Olry

Dominique Coupe

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Societe Europeenne de Propulsion SEP SA

Original Assignee

Societe Europeenne de Propulsion SEP SA

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.)

1990-12-03

Filing date

1991-12-02

Publication date

1992-06-10

1991-12-02 Application filed by Societe Europeenne de Propulsion SEP SA filed Critical Societe Europeenne de Propulsion SEP SA

1992-06-10 Publication of EP0489637A1 publication Critical patent/EP0489637A1/de

1995-03-29 Application granted granted Critical

1995-03-29 Publication of EP0489637B1 publication Critical patent/EP0489637B1/de

2011-12-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

239000002131 composite material Substances 0.000 title claims abstract description 13
238000000034 method Methods 0.000 title claims description 19
238000004519 manufacturing process Methods 0.000 title claims description 15
230000009970 fire resistant effect Effects 0.000 title 1
239000000835 fiber Substances 0.000 claims abstract description 57
239000002243 precursor Substances 0.000 claims abstract description 16
239000011819 refractory material Substances 0.000 claims abstract description 9
230000008030 elimination Effects 0.000 claims abstract description 8
238000003379 elimination reaction Methods 0.000 claims abstract description 8
239000000463 material Substances 0.000 claims description 14
239000000919 ceramic Substances 0.000 claims description 7
230000008569 process Effects 0.000 claims description 6
229920000642 polymer Polymers 0.000 claims description 4
230000009466 transformation Effects 0.000 claims description 4
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
229910052799 carbon Inorganic materials 0.000 claims description 3
238000005336 cracking Methods 0.000 claims description 2
229910010293 ceramic material Inorganic materials 0.000 claims 1
238000000280 densification Methods 0.000 abstract description 11
239000004372 Polyvinyl alcohol Substances 0.000 description 11
229920002451 polyvinyl alcohol Polymers 0.000 description 11
229920000049 Carbon (fiber) Polymers 0.000 description 10
239000004917 carbon fiber Substances 0.000 description 10
239000004744 fabric Substances 0.000 description 10
238000009941 weaving Methods 0.000 description 9
229920002239 polyacrylonitrile Polymers 0.000 description 8
VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
239000011159 matrix material Substances 0.000 description 6
HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
239000004753 textile Substances 0.000 description 6
238000010438 heat treatment Methods 0.000 description 5
239000007788 liquid Substances 0.000 description 5
229910010271 silicon carbide Inorganic materials 0.000 description 5
239000000470 constituent Substances 0.000 description 4
230000008595 infiltration Effects 0.000 description 4
238000001764 infiltration Methods 0.000 description 4
229920003257 polycarbosilane Polymers 0.000 description 4
239000000126 substance Substances 0.000 description 3
239000007833 carbon precursor Substances 0.000 description 2
230000000694 effects Effects 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
229910052580 B4C Inorganic materials 0.000 description 1
239000004698 Polyethylene Substances 0.000 description 1
229910052581 Si3N4 Inorganic materials 0.000 description 1
HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
230000004075 alteration Effects 0.000 description 1
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
230000008901 benefit Effects 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 description 1
238000003763 carbonization Methods 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
238000007796 conventional method Methods 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000008021 deposition Effects 0.000 description 1
239000007943 implant Substances 0.000 description 1
150000004767 nitrides Chemical class 0.000 description 1
-1 polyethylene Polymers 0.000 description 1
229920000573 polyethylene Polymers 0.000 description 1
229920002689 polyvinyl acetate Polymers 0.000 description 1
239000011118 polyvinyl acetate Substances 0.000 description 1
230000035755 proliferation Effects 0.000 description 1
230000002787 reinforcement Effects 0.000 description 1
HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
238000009987 spinning Methods 0.000 description 1
230000008961 swelling Effects 0.000 description 1
210000001519 tissue Anatomy 0.000 description 1
230000001131 transforming effect Effects 0.000 description 1
230000007704 transition Effects 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/16—Yarns or threads made from mineral substances
- D02G3/18—Yarns or threads made from mineral substances from glass or the like

Definitions

refractory fibers are understood here to mean fibers in a state preceding the refractory state, the transition to the latter being most often effected by heat treatment.
a carbon precursor is preoxidized polyacrylonitrile (PAN), or a pitch
a silicon carbon precursor is polycarbosilane (PCS).
Another problem encountered during the production of parts made of composite material is that of the accessibility of the internal porosity of the preform during densification.
the liquid method consists of impregnating the preform with a precursor liquid of the material constituting the matrix and then transforming the precursor, generally by heat treatment.
the gas process (chemical vapor infiltration) consists of placing the preform in an enclosure where a gas flow is introduced under determined temperature and pressure conditions to form the matrix material in contact with the fibers of the preform by decomposition of one or more constituents of the gas flow or by reaction between constituents thereof.
the covering yarn has a low denier compared to that of the assembled staple fibers, so as not to leave too large voids within the preform after elimination of the covering yarn.
the denier of the covering thread is preferably less than a tenth of that of the assembled staple fibers.
fugitive material which constitutes the covering yarn, is meant here any material capable of being removed without leaving a residue on the yarn and without alteration of the refractory fibers.
the fugitive material is a soluble polymer, such as a PVA (polyvinyl alcohol), or a polymer capable of being completely removed by heat treatment, such as polyvinyl acetate or polyethylene.
the supply of the wire comprises a step of obtaining staple fibers, preferably long staple fibers, parallel to each other, in refractory material or in a precursor thereof. This is achieved for example by controlled stretching and cracking of a multifilament cable, as described in particular in document FR-A-2 608 641 for obtaining
the fibers are left parallel to one another, and not twisted, the integrity of the thread being produced by covering with the thread of fugitive material.
the covering is carried out by means of a known covering machine, for example the "Parafil” machine from the German company Spindelfabrik Suessen.
the covering gives the yarn the necessary resistance to undergo textile operations, in particular weaving.
the method according to the present invention can be implemented for all applications requiring the execution of textile operations on the thread, such as weaving and needling.
the transformation of the precursor into refractory material is carried out after manufacture of the preform and after elimination of the covering wire.
the covering thread is made of a removable material by heat, this elimination can be carried out during a rise in temperature carried out with a view to the transformation of the precursor by heat treatment.
Example 1 Manufacture of a carbon fiber preform.
the fabric After weaving, the fabric is washed in a water bath at 80 ° C for 10 minutes, then wrung and dried.
the PVA covering yarn is completely dissolved and the fibers of the preoxidized PAN yarns expand within the fabric allowing direct needling thereof, without adding a layer of felt.
the carbon fiber preform can then be densified by a material constituting a matrix, for example carbon or a ceramic, in order to obtain the composite material. desired with carbon fiber reinforcement. Densification is carried out by liquid means or by chemical vapor infiltration. The proliferation of fibers within the fibrous texture, resulting from the loosening of the untwisted fibers after elimination of the covering yarn, avoids the formation of dead volumes within the preform and consequently promotes a more complete and more homogeneous densification.
a material constituting a matrix for example carbon or a ceramic
Example 2 Manufacture of a ceramic fiber preform.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Textile Engineering (AREA)
Woven Fabrics (AREA)
Nonwoven Fabrics (AREA)
Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Inorganic Fibers (AREA)
Manufacture Of Alloys Or Alloy Compounds (AREA)

EP91403260A 1990-12-03 1991-12-02 Verfahren zur Fabrikation einer faserigen Rohrform gebildet aus feuerfesten Fasern zur Herstellung eines Verbundwerkstoffes Expired - Lifetime EP0489637B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR909015128A FR2669940B1 (fr)	1990-12-03	1990-12-03	Fil forme a partir de fibres refractaires ou de leurs precurseurs et son application a la fabrication de pieces en materiau composite.
FR9015128		1990-12-03

Publications (2)

Publication Number	Publication Date
EP0489637A1 true EP0489637A1 (de)	1992-06-10
EP0489637B1 EP0489637B1 (de)	1995-03-29

Family

ID=9402850

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91403260A Expired - Lifetime EP0489637B1 (de)	1990-12-03	1991-12-02	Verfahren zur Fabrikation einer faserigen Rohrform gebildet aus feuerfesten Fasern zur Herstellung eines Verbundwerkstoffes

Country Status (6)

Country	Link
US (1)	US5228175A (de)
EP (1)	EP0489637B1 (de)
JP (1)	JP2854178B2 (de)
CA (1)	CA2056789C (de)
DE (1)	DE69108530T2 (de)
FR (1)	FR2669940B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1996037646A1 (fr) *	1995-05-24	1996-11-28	Societe Europeenne De Propulsion	Fil hybride pour la fabrication de preformes fibreuses de pieces en materiau composite et procede pour sa preparation
EP2636776A1 (de) *	2012-03-05	2013-09-11	Goodrich Corporation	Spiralförmiges Carbonfasergewebe mit reduzierten Garnondulationen und Herstellverfahren dafür
FR3162761A1 (fr) *	2024-06-03	2025-12-05	Safran Ceramics	Préforme fIbreuse figée par le materieu de guipage

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE69229007T2 (de) *	1991-01-16	1999-10-21	Sgl Carbon Composites, Inc.	Verbundwerkstoffe aus siliciumcarbidfaserarmiertem Kohlenstoff
US6465100B1 (en) *	1993-06-15	2002-10-15	Alliant Techsystems Inc.	Densification of composite preforms by liquid resin infiltration assisted by rigid-barrier actinic gelation
JP2755361B2 (ja) *	1993-06-30	1998-05-20	徹糸井	多重織物の製造方法
US6248417B1 (en) *	1997-09-08	2001-06-19	Cytec Technology Corp.	Needled near netshape carbon preforms having polar woven substrates and methods of producing same
US5952075A (en) *	1997-09-08	1999-09-14	Fiberite, Inc.	Needled near netshape carbon preforms having polar woven substrates and methods of producing same
FR2770233B1 (fr) *	1997-10-27	2000-01-14	Messier Bugatti	Procede de fabrication de preformes en fibres de carbone
DE10061028A1 (de) *	2000-12-08	2002-06-20	Eads Deutschland Gmbh	Verfahren zum Herstellen von mehrschichtigen TFP-Preforms mittels schmelzbaren Fixierfäden
US6820406B2 (en)	2001-05-14	2004-11-23	Cargill, Incorporated	Hybrid yarns which include plant bast fiber and thermoplastic fiber, reinforcement fabrics made with such yarns and thermoformable composites made with such yarns and reinforcement fabrics
US20030157323A1 (en) *	2001-05-14	2003-08-21	Mikhail Khavkine	Hybrid yarns which include oil seed flax plant bast fiber and other fibers and fabrics made with such yarns
US6833399B2 (en)	2001-09-21	2004-12-21	Cargill, Limited	Flowable flax bast fiber and flax shive blend useful as reinforcing agent
WO2005090664A1 (ja) *	2004-03-22	2005-09-29	Otas Company, Limited	等方性ピッチ系炭素繊維紡績糸、それを用いた複合糸及び織物、並びにそれらの製造方法
FR2902802B1 (fr) *	2006-06-21	2008-12-12	Snecma Propulsion Solide Sa	Structure fibreuse de renfort pour piece en materiau composite et piece la comportant
PL2532775T3 (pl) *	2011-06-07	2013-12-31	Climatex Ag	Podłoże tekstylne z wielu w różny sposób możliwych do utylizacji i/lub możliwych do wykorzystania materiałów, zastosowanie takiego podłoża tekstylnego i sposób przetwarzania takiego podłoża tekstylnego
ITUB20152386A1 (it)	2015-07-22	2017-01-22	Freni Brembo Spa	Materiale sagomato e procedimento di fabbricazione
JP6652000B2 (ja) *	2016-06-29	2020-02-19	株式会社豊田自動織機	繊維強化複合材用プリフォーム及び繊維強化複合材
JP6620771B2 (ja) *	2017-02-08	2019-12-18	株式会社豊田自動織機	繊維構造体及び繊維強化複合材

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2021660A (en) *	1978-04-26	1979-12-05	Tba Industrial Products Ltd	Cored staple-fibre yarns
FR2608641A1 (fr) *	1986-12-18	1988-06-24	Schappe Sa	File de fibres de carbone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3994762A (en) *	1972-07-21	1976-11-30	Hyfil Limited	Carbon fiber composites
JPS5898443A (ja) *	1981-12-02	1983-06-11	新興機械株式会社	ステ−プル状炭素繊維よりなる糸
US4482601A (en) *	1983-05-31	1984-11-13	Albany International Corp.	Wet press papermakers felt and method of fabrication
US4885973A (en) *	1988-12-14	1989-12-12	Airfoil Textron Inc.	Method of making composite articles
JPH02210036A (ja) *	1989-02-09	1990-08-21	Gunze Ltd	強化材用複合糸条
JPH07316144A (ja) *	1994-03-29	1995-12-05	Sankyo Co Ltd	ジフェニルメチルピペラジン誘導体

1990
- 1990-12-03 FR FR909015128A patent/FR2669940B1/fr not_active Expired - Fee Related
1991
- 1991-12-02 DE DE69108530T patent/DE69108530T2/de not_active Expired - Lifetime
- 1991-12-02 EP EP91403260A patent/EP0489637B1/de not_active Expired - Lifetime
- 1991-12-02 CA CA002056789A patent/CA2056789C/en not_active Expired - Lifetime
- 1991-12-02 US US07/801,700 patent/US5228175A/en not_active Expired - Lifetime
- 1991-12-03 JP JP3318953A patent/JP2854178B2/ja not_active Expired - Lifetime

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2021660A (en) *	1978-04-26	1979-12-05	Tba Industrial Products Ltd	Cored staple-fibre yarns
FR2608641A1 (fr) *	1986-12-18	1988-06-24	Schappe Sa	File de fibres de carbone

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JAPANESE PATENTS GAZETTE SECTION CH, WEEK 8329,11 JUNE 1983 DERWENT PUBLICATIONS LIMITED.,LONDON GB *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 509 (C-0776)7 Novembre 1990 & JP-A-02 210 036 ( SATO AKIHIRO ) 21 Août 1990 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1996037646A1 (fr) *	1995-05-24	1996-11-28	Societe Europeenne De Propulsion	Fil hybride pour la fabrication de preformes fibreuses de pieces en materiau composite et procede pour sa preparation
FR2734581A1 (fr) *	1995-05-24	1996-11-29	Europ Propulsion	Fil hybride pour la fabrication de preformes fibreuses de pieces en materiau composite et procede pour sa preparation
US6051313A (en) *	1995-05-24	2000-04-18	Societe Nationale D'etude Et De Construction De Moteurs D'aviation	Hybrid yarn for the fabrication of fibre preforms of composite parts, and method for its preparation
US6228786B1 (en)	1995-05-24	2001-05-08	Societe Nationale D'etude Et De Construction De Moteurs D'aviation	Hybrid yard for the fabrication of fiber preforms of composite parts, and method for its preparation
EP2636776A1 (de) *	2012-03-05	2013-09-11	Goodrich Corporation	Spiralförmiges Carbonfasergewebe mit reduzierten Garnondulationen und Herstellverfahren dafür
US10648106B2 (en)	2012-03-05	2020-05-12	Goodrich Corporation	Systems and methods for reduced crimp carbon fiber helical fabric
FR3162761A1 (fr) *	2024-06-03	2025-12-05	Safran Ceramics	Préforme fIbreuse figée par le materieu de guipage

Also Published As

Publication number	Publication date
JPH0586534A (ja)	1993-04-06
CA2056789C (en)	1999-01-05
FR2669940A1 (fr)	1992-06-05
JP2854178B2 (ja)	1999-02-03
DE69108530T2 (de)	1995-12-21
EP0489637B1 (de)	1995-03-29
US5228175A (en)	1993-07-20
CA2056789A1 (en)	1992-06-04
FR2669940B1 (fr)	1994-10-21
DE69108530D1 (de)	1995-05-04

Legal Events

Date	Code	Title	Description
1992-04-24	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1992-06-10	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE FR GB IT
1993-01-13	17P	Request for examination filed	Effective date: 19921117
1994-02-09	17Q	First examination report despatched	Effective date: 19931228
1995-02-10	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-03-29	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT
1995-04-12	ITF	It: translation for a ep patent filed
1995-04-26	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19950327
1995-05-04	REF	Corresponds to:	Ref document number: 69108530 Country of ref document: DE Date of ref document: 19950504
1996-02-02	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-02-02	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-03-20	26N	No opposition filed
1998-07-03	REG	Reference to a national code	Ref country code: FR Ref legal event code: TP
2000-06-28	REG	Reference to a national code	Ref country code: GB Ref legal event code: 732E
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Publication	Publication Date	Title
EP0489637B1 (de)	1995-03-29	Verfahren zur Fabrikation einer faserigen Rohrform gebildet aus feuerfesten Fasern zur Herstellung eines Verbundwerkstoffes
EP1537262B1 (de)	2016-07-27	Dreidimensionale faserstruktur, enthaltend feuerfeste fasern, verfahren zu ihrer herstellung und verwendung in thermostrukturellen verbundwerkstoffen
EP2493832B1 (de)	2014-12-10	Thermostrukturelles verbundstoffmaterialteil mit geringer dicke und herstellungsverfahren
EP3551593B1 (de)	2021-01-27	Formausrüstung und anlage zur chemischen infiltration in der gasphase von faservorformen
EP0819105B1 (de)	2003-10-22	Verfahren zur chemischen dampfinfiltration mit variablen infiltrationsparametern
FR2852004A1 (fr)	2004-09-10	Realisation d'une preforme par renforcement d'une structure fibreuse et/ou par liaison entre elles de structures fibreuses et application a la realisation de pieces en materiau composite
EP2791080B1 (de)	2019-02-27	Teil aus cmc
FR2852003A1 (fr)	2004-09-10	Procede de realisation d'une piece multiperforee en materiau composite a matrice ceramique
EP2373596B1 (de)	2014-08-13	Verfahren zum verarbeiten keramischer fasern
FR2882356A1 (fr)	2006-08-25	Procede de fabrication de piece en materiau composite a matrice ceramique et piece ainsi obtenue
EP0828874A1 (de)	1998-03-18	Hybridfaden zur herstellung von faserigen vorformen für verbundteile und verfahren zu dessen herstellung
FR2933970A1 (fr)	2010-01-22	Procede de fabrication d'une piece en materiau compositie thermostructural et piece ainsi obtenue
FR2886640A1 (fr)	2006-12-08	Procede et preforme pour la realisation de pieces en materiau composite par densification cvi et pieces obtenues
EP2089338A2 (de)	2009-08-19	Herstellungsverfahren für ein thermostrukturelles verbundteil
CA2990173A1 (fr)	2016-12-29	Procede de traitement de fibres de carbure de silicium
EP0633233B1 (de)	1999-05-06	Verfahren zur Herstellung eines Verbundwerkstoffelements enthaltende eine auf flüssigem Wege erhaltene Faserverstärkung
EP0452199B1 (de)	1995-03-22	Verfahren zur Verfestigung von Vorformen zur Herstellung von hitzebeständigen Verbundwerkstoffteilen, insbesondere von Teilen in Form von Segeln oder Platten
FR2637586A1 (fr)	1990-04-13	Procede de fabrication de textures de renfort multidirectionnelles essentiellement en fibres ceramiques a base de compose du silicium pour la realisation de materiaux composites, ainsi que les textures et materiaux composites obtenus
FR2686907A1 (fr)	1993-08-06	Procede d'elaboration de preformes fibreuses pour la fabrication de pieces en materiaux composites et produits obtenus par le procede.
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WO2019106257A1 (fr)	2019-06-06	Procede de traitement de fibres de carbure de silicium
FR3032906A1 (fr)	2016-08-26	Procede de fabrication d'une preforme fibreuse
FR3032977A1 (fr)	2016-08-26	Procede de fabrication d'un materiau composite