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1. WO1998024737 - SILICON CARBIDE REINFORCED SILICON CARBIDE COMPOSITE

Publication Number WO/1998/024737
Publication Date 11.06.1998
International Application No. PCT/US1997/021874
International Filing Date 01.12.1997
Chapter 2 Demand Filed 09.06.1998
IPC
B28B 1/26 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped articles from the material
26by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor
B28B 1/52 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped articles from the material
52specially adapted for producing articles from mixtures containing fibres
B28B 23/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
23Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material
C04B 35/573 2006.1
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
515based on non-oxides
56based on carbides
565based on silicon carbide
569Fine ceramics
573obtained by reaction sintering
C04B 35/80 2006.1
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
71Ceramic products containing macroscopic reinforcing agents
78containing non-metallic materials
80Fibres, filaments, whiskers, platelets, or the like
E21D 11/38 2006.1
EFIXED CONSTRUCTIONS
21EARTH OR ROCK DRILLING; MINING
DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
11Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
38Waterproofing; Heat insulating; Soundproofing; Electric insulating
CPC
B28B 1/265
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped ; prefabricated; articles from the material
26by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor
265pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
B28B 1/52
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped ; prefabricated; articles from the material
52specially adapted for producing articles from mixtures containing fibres, ; e.g. asbestos cement
B28B 23/0006
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
23Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; ; Production of reinforced objects
0006the reinforcement consisting of aligned, non-metal reinforcing elements
C04B 2235/3821
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
38Non-oxide ceramic constituents or additives
3817Carbides
3821Boron carbides
C04B 2235/3826
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
38Non-oxide ceramic constituents or additives
3817Carbides
3826Silicon carbides
C04B 2235/421
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2235Aspects relating to ceramic starting mixtures or sintered ceramic products
02Composition of constituents of the starting material or of secondary phases of the final product
30Constituents and secondary phases not being of a fibrous nature
42Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
421Boron
Applicants
  • SAINT-GOBAIN INDUSTRIAL CERAMICS, INC. [US]/[US]
Inventors
  • LAU, Sai-Kwing
  • CALANDRA, Salavatore, J.
  • OHNSORG, Roger, W.
Agents
  • DAVIS, Anthony, G., M.
Priority Data
08/758,71502.12.1996US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SILICON CARBIDE REINFORCED SILICON CARBIDE COMPOSITE
(FR) COMPOSITE DE CARBURE DE SILICIUM A RENFORT DE CARBURE DE SILICIUM
Abstract
(EN) This invention relates to a process comprising the steps of: a) providing a fiber preform comprising a non-oxide ceramic fiber with at least one coating, the coating comprising a coating element selected from the group consisting of carbon, nitrogen, aluminum and titanium, and the fiber having a degradation temperature of between 1400 °C and 1450 °C; b) impregnating the preform with a slurry comprising silicon carbide particles and between 0.1 wt.% and 3 wt.% added carbon; c) providing a cover mix comprising: i) an alloy comprising a metallic infiltrant and the coating element, and ii) a resin; d) placing the cover mix on at least a portion of the surface of the porous silicon carbide body; e) heating the cover mix to a temperature between 1410 °C and 1450 °C to melt the alloy; and f) infiltrating the fiber preform with the melted alloy for a time period of between 15 minutes and 240 minutes, to produce a ceramic fiber reinforced ceramic composite.
(FR) L'invention porte sur un procédé comportant les étapes suivantes: (a) prendre une préforme de fibres faite de fibres de céramique (mais pas d'oxyde) munie d'au moins un revêtement choisi parmi le carbone, l'azote, l'aluminium et le titane, lesdites fibres ayant une température de dégradation comprise entre 1400 °C et 1450 °C; (b) imprégner la préforme d'une bouillie comportant des particules de carbure de silicium et entre 0,1 % et 3 % en poids de carbone ajouté; (c) prendre un mélange de couverture comprenant: (i) un alliage fait de poudre infiltrante métallique et de l'élément de revêtement, et (ii) une résine; (d) placer le mélange de couverture sur une partie au moins de la surface du corps poreux de carbure de silicium; (e) chauffer le mélange de couverture entre 1410 °C et 1450 °C pour faire fondre l'alliage; et infiltrer la préforme de fibres à l'aide de l'alliage fondu pendant un temps compris entre 15 et 240 minutes de manière à obtenir un composite céramique renforcé par des fibres céramiques.
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