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US4752503A
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Process for the manufacture of a composite material with refractory fibrous reinforcement and ceramic matrix
Assignee: STYLED -A CORP OF FRANCE SA
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Filing: 1985-07-18
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Granted: 1988-06-21
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Expires: 2005-07-18
Abstract
Abstract A thin, refractory, intermediate adhesive layer of laminar structure is deposited in oriented fashion on the reinforcing fibers by chemical vapor deposition, this intermediate layer having a greater elongation at break than the matrix and having a thickness of between 0.2 and 3 micrometers; the material forming the intermediate layer can be laminar pyrocarbon or boron nitride; the ceramic matrix is then infiltered, preferably by chemical vapor deposition, inside the pores of the reinforcement.
Inventors
- 👤 Jacques Thebault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:54
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/01; C04B35/10; C04B35/111; C04B35/117; C04B35/515; C04B35/56; C04B35/565; C04B35/571; C04B35/622; C04B35/624; C04B35/626; C04B35/628; C04B35/62844; C04B35/62857; C04B35/6286; C04B35/62863; C04B35/62865; C04B35/62868; C04B35/62884; C04B35/62897; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3217; C04B2235/44; C04B2235/441; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5216; C04B2235/524; C04B2235/5244; C04B2235/5248; C04B2235/60; C04B2235/614; C04B2235/616; C04B2235/70; C04B2235/95; C04B2235/96; C04B2235/9669; C04B2235/9684; Y; Y10; Y10S; Y10S428/00; Y10S428/902; Y10S428/903; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/292; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2956
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A method for manufacturing a composite material having a fibrous reinforcing texture and a ceramic matrix, said method comprising the steps of: providing a fibrous reinforcing texture made of fibers of a refractory material, coating said reinforcing texture by chemical vapor deposition with an intermediate layer consisting of a material having an elongation at break greater than that of the ceramic matrix and being elastically deformable in shear, said intermediate layer having a thickness not exceeding 3 microns, and forming the ceramic matrix by depositing a ceramic material over said intermediate layer without involving any chemical reaction with the material of the intermediate layer, wherein both the reinforcing texture and the ceramic material adhere to the intermediate layer such that an intermediate bonding layer capable of elastic deformation in shear is formed between the fibers of the reinforcing texture and the matrix.
Claim 2
Independent Claim
142 words
A method for manufacturing a composite material having a fibrous reinforcing texture and a ceramic matrix, said method comprising the steps of: providing a fibrous reinforcing texture made of fibers of a refractory material, coating said reinforcing texture by chemical vapor deposition with an intermediate layer consisting of a material having an elongation at break greater than that of the ceramic matrix and being elastically deformable in shear, said intermediate layer having a thickness not exceeding 3 microns, and forming the ceramic matrix by depositing a ceramic material over said intermediate layer without involving any chemical reaction with the material of the intermediate layer, wherein both the reinforcing texture and the ceramic material adhere to the intermediate layer such that an intermediate bonding layer capable of elastic deformation in shear is formed between the fibers of the reinforcing texture and the matrix.
Claim 3
Dependent Claim
16 words
A method as claimed in claim 1, wherein said intermediate layer consists of laminar pyrolytic carbon.
Claim 4
Dependent Claim
15 words
A method as claimed in claim 1, wherein said intermediate layer consists of boron nitride.
Claim 5
Dependent Claim
15 words
A method as claimed in claim 1, wherein the reinforcing texture consists of carbon fibers.
Claim 6
Dependent Claim
16 words
A method as claimed in claim 1, wherein the reinforcing texture consists of silicon carbide fibers.
Claim 7
Dependent Claim
15 words
A method as claimed in claim 1, wherein said ceramic material consists of silicon carbide.
Claim 8
Dependent Claim
17 words
A method as claimed in claim 1, wherein the ceramic matrix is formed by chemical vapor deposition.
Claim 9
Dependent Claim
21 words
A method as claimed in claim 1, wherein said intermediate layer and ceramic matrix are formed successively by chemical vapor deposition.
Claim 10
Dependent Claim
35 words
A method as claimed in claim 1, wherein said ceramic matrix is at least partially formed by decomposition of a liquid or fusible compound impregnated into the fibrous reinforcing texture coated with said intermediate layer.
References Cited (Backward Citations)
DE2131407A1
Cited
US3895084A
Cited
US3991248A
Cited
US3925577A
Cited
US4131697A
Cited
GB1457757A
Cited
FR2401888A1
Cited
US4178413A
Cited
US4241104A
Cited
US4275095A
Cited
US4397901A
Cited
FR2520730A1
Cited
US4472476A
Cited
US4487799A
Cited
US4515860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |