DE3007384A1 - Silicon-contg. non-oxide ceramic article prepn. - by mixing silicon contg. powder with organo-silicon polymer, moulding and firing - Google Patents
Silicon-contg. non-oxide ceramic article prepn. - by mixing silicon contg. powder with organo-silicon polymer, moulding and firingInfo
- Publication number
- DE3007384A1 DE3007384A1 DE19803007384 DE3007384A DE3007384A1 DE 3007384 A1 DE3007384 A1 DE 3007384A1 DE 19803007384 DE19803007384 DE 19803007384 DE 3007384 A DE3007384 A DE 3007384A DE 3007384 A1 DE3007384 A1 DE 3007384A1
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- Germany
- Prior art keywords
- silicon
- powder
- contg
- resistant ceramic
- heat
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- 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.)
- Ceased
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
- C04B35/571—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained from Si-containing polymer precursors or organosilicon monomers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
- C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
- C04B35/589—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride obtained from Si-containing polymer precursors or organosilicon monomers
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6316—Binders based on silicon compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Products (AREA)
Abstract
Description
Verfahren zur Herstellung von siliziumhaltigen,Process for the production of silicon-containing,
nicht-oxidischen, wärmebeständigen Keramikartikeln Die Erfindung betrifft ein Verfahren zur Herstellung von siliziumhaltigen, nicht-oxidischen, wärmebeständigen Reramikartikeln, und insbesondere ein Verfahren zur Herstellung von siliziumhaltigen, nicht-oxidischen, wärmebeständigen Keramikartikeln hoher Dichte und Festigkeit und mit komplizierten Formen und hoher Dimensionsbeständigkeit durch Spritzgießen.Non-oxide, heat-resistant ceramic articles The invention relates to a process for the production of silicon-containing, non-oxide, heat-resistant Ceramic articles, and in particular a method for the production of silicon-containing, non-oxide, heat-resistant ceramic articles of high density and strength and with intricate shapes and high dimensional stability through injection molding.
Siliziumhaltige, nicht-oxidische, wärmebeständige Keramikartikel, wie Siliziumnitrit (Si3N4) -Keramikartikel, Siliziumkarbid (SiC) -Keramikartikel, Sialon-Keramikartikel und dergleichen haben hervorragende Hochtemperatureigenschaften, wie Wärmebeständigkeit, thermische Schockbeständigkeit, Hochtemperaturfestigkeit und dergleichen.Silicon-containing, non-oxidic, heat-resistant ceramic articles, such as silicon nitride (Si3N4) ceramic articles, silicon carbide (SiC) ceramic articles, Sialon ceramic articles and the like have excellent high temperature properties, such as heat resistance, thermal shock resistance, high temperature resistance and the same.
Deshalb haben solche keramischen Artikel in der jüngeren Zeit als Baustoffe mit ausgezeichneten Hochtemperatureigenschaften für Maschinenteile und dergleichen Interesse gefunden.Therefore, in recent times, such ceramic articles have been considered Building materials with excellent high temperature properties for machine parts and found the same interest.
Siliziumhaltige, nicht-oxidischen, wärmebeständige Keramikartikel mit hoher Dichte und Festigkeit sind bisher durch Heißpressen, durch Gießverfahren oder sogenanntes Kaltpressen unter Verwendung einer Metall form und dergleichen hergestellt worden. Da man beim Heißpreßverfahren an die Form der Matrize gebunden ist, ist es unmöglich, strukturelle Teile mit komplizierteren Formen herzustellen. Beim Gießverfahren wird ein Entflockungsmittel als Gießhilfe verwendet, und das Entflockungsmittel wird dann zersetzt und verdampft während des Brennens und vermindert die Dichte und Festigkeit des erhaltenen Keramikartikels.Silicon-containing, non-oxide, heat-resistant ceramic articles with high density and strength are so far by hot pressing, by casting processes or so-called cold pressing using a metal mold and the like has been manufactured. Because you are bound to the shape of the die in the hot pressing process it is impossible to make structural parts with more complicated shapes. In the casting process, a deflocculant is used as a casting aid, and that Deflocculant is then decomposed and evaporated while burning and diminished the density and strength of the ceramic article obtained.
Da man außerdem beim Gießverformen Gipsformen und dergleichen als Formwerkzeug verwendet, kann man auf diese Weise keine Keramikartikel mit hoher Dimensionsgenauigkeit herstellen. Beim sogenannten Kaitpreßverformen, bei dem man Metallformen und dergleichen verwendet, ist eine mechanische Bearbeitung, z.B. auf einer Drehbank und dergleichen, erforderlich, die nach der Preßverformung durchgeführt werden muß, um Keramikartikel mit komplizierten Formen herzustellen, und deshalb ist die Massenherstellung von Keramikartikeln nach dieser Verfahrensweise schwierig und die Keramikartikel sind sehr teuer.Since you also in the casting molding plaster molds and the like as Using a molding tool, you cannot produce ceramic articles with high Establish dimensional accuracy. When so-called Kaitpreßverformen, in which one Metal molds and the like are used, mechanical processing such as a lathe and the like, which is performed after the press forming must be used to make ceramic articles of complicated shapes, and therefore mass production of ceramic articles by this method is difficult and the ceramic items are very expensive.
Das Verfahren, das am besten zur Herstellung von großen Mengen von Maschinenteilen mit komplizierten Formen geeignet ist, ist als Spritzgießen bekannt. Dieses Verfahren ist bisher zur Herstellung von Oxidkeramikartikeln, wie Ton-Keramikartikeln oder Aluminiumoxid-Keramikartikeln angewendet worden, aber nicht bei der Herstellung von siliziumhaltigen, nicht-oxidischen, wärmebeständigen Keramikartikeln, wie Si3N4, von keramischen SiC-Artikeln oder von Sialon-Keramikartikeln. Der Grund dafür ist der, daß diese Keramikmaterialien verhältnismäßig schlechte plastische Eigenschaften haben, und es darüber hinaus erforderlich ist, daß der Formkörper unter Atmosphärendruck und in einer nicht-oxidierenden Atmosphäre in einer Zersetzungsstufe erhitzt wird, bei welcher der für die Formkörper verwendete Weichmacher zersetzt wird und verdampft, und wobei die Auswahl eines geeigneten Weichmachers deshalb sehr schwierig ist.The process that is best for producing large quantities of Machine parts with intricate shapes is known as injection molding. This method has heretofore been used to manufacture oxide ceramic articles such as clay ceramic articles or alumina ceramic articles have been used, but not in their manufacture of silicon-containing, non-oxide, heat-resistant Ceramic items, such as Si3N4, ceramic SiC articles or Sialon ceramic articles. The reason this is because these ceramic materials are relatively poor in plasticity Have properties, and it is also necessary that the molded body under atmospheric pressure and in a non-oxidizing atmosphere in a decomposition stage is heated, during which the plasticizer used for the molded body decomposes is and evaporated, and the selection of a suitable plasticizer therefore is very difficult.
Aufgabe der Erfindung ist es, die vorerwähnten Nachteile zu vermeiden.The object of the invention is to avoid the disadvantages mentioned above.
Die vorliegende Erfindung beruht auf der Enideckung, daß man einen siliziumhaltigen,nicht-oxidischen, wärmebeständigen Keramikartikel mit hoher Dichte und Festigkeit und mit einer komplizierten Form leicht und mit hoher Dimensionsgenauigkeit erhalten kann, indem man ein Siliziumpulver oder ein siliziumhaltiges, nicht-oxidisches Pulver zusammen mit einem als thermoplastisches Harz verwendeten Organosiliziumpolymer spritzvergießt.The present invention is based on the discovery that one silicon-containing, non-oxide, high-density, heat-resistant ceramic articles and strength and having a complicated shape easily and with high dimensional accuracy can be obtained by using a silicon powder or a silicon-containing, non-oxide Powder together with an organosilicon polymer used as a thermoplastic resin injection molded.
Die Erfindung betrifft somit ein Verfahren zur Herstellung von siliziumhaltigen, nicht-oxidischen, wärmbeständigen Keramikartikeln, bei dem man ein Siliziumpulver oder ein siliziumhaltiges, nicht-oxidisches Pulver als Rohmaterial verwendet, und dieses zusammen mit einem thermoplastischen Harz erhitzt und verknetet, und die erhaltene Mischung anschließend spritzvergießt, und den erhaltenen Formkörper dann zersetzt und brennt. Die Erfindung ist dadurch gekennzeichnet, daß man als thermoplastisches Harz ein Organosiliziumpolymer verwendet, das fähig ist, durch Zersetzen des Polymers in ein wärmebeständiges Keramikmaterial überführt zu werden.The invention thus relates to a method for the production of silicon-containing, non-oxide, heat-resistant ceramic article, in which one is a silicon powder or a silicon-containing, non-oxide powder is used as a raw material, and this is heated and kneaded together with a thermoplastic resin, and the The resulting mixture is then injection-molded, and then the molded body obtained decomposes and burns. The invention is characterized in that one as a thermoplastic Resin uses an organosilicon polymer capable of decomposing the polymer to be converted into a heat-resistant ceramic material.
Nachfolgend wird die Erfindung ausführlicher erläutert.The invention is explained in more detail below.
Erfindungsgemäß wird als Rohmaterialpulver Siliziumpulver (Si-Pulver) oder ein siliziumhaltiges, nicht-oxidisches Pulver, wie Si3N4-Pulver, SiC-Pulver oder Sialon-Pulver verwendet. Das Rohmaterialpulver wird gegebenenfalls mit einer Sinterhilfe, wie einem Oxid, Nitrid, Karbid und dergleichen vermischt. Das Rohmaterialpulver wird zusammen mit einem Organosiliziumpolymer, das als thermoplastisches Harz verwendet wird, erhitzt und verknetet.According to the invention, silicon powder (Si powder) is used as the raw material powder or a silicon-containing, non-oxide powder, such as Si3N4 powder, SiC powder or sialon powder is used. The raw material powder is optionally with a Sintering aid such as an oxide, nitride, carbide and the like are mixed. The raw material powder is used together with an organosilicon polymer which is used as a thermoplastic resin is heated and kneaded.
Die erhaltene Mischung wird in eine vorbestimmte Form durch Spritzvergießen überführt oder einem für die Verformung von thermoplastischen Harzen verwendeten Preßspritzverfahren unterworfen. Der erhaltene Formkörper wird in einer inerten Gasatmosphäre, wie Argon, Stickstoff und dergleichen, gebrannt, und zwar durch einen stufenweisen Brennvorgang, bei dem das Organosiliziumpolymer in ein wärmebeständiges Keramikmaterial, wie SiC, Si3N4 oder dergleichen überführt wird. Danach wird der Formkörper in einer Inertgasatmosphäre, wie Stickstoff, Argon und dergleichen, gebrannt unter Erhalt eines wärmebeständigen Keramikartikels mit hoher Dichte. Wird Si-Pulver als Rohmaterialpulver verwendet, so muß der letzte Brennvorgang unter einer stickstoffhaltigen Atmosphäre durchgeführt werden, um das Silizium mit dem Stickstoff umzusetzen.The obtained mixture is molded into a predetermined shape by injection molding transferred or one used for the molding of thermoplastic resins Subject to transfer molding. The molded body obtained is in an inert Gas atmosphere such as argon, nitrogen and the like, burned by a step-by-step firing process in which the organosilicon polymer is converted into a heat-resistant Ceramic material such as SiC, Si3N4 or the like is transferred. After that, the Shaped articles are fired in an inert gas atmosphere such as nitrogen, argon and the like to obtain a high-density, heat-resistant ceramic article. Becomes Si powder Used as raw material powder, the final burn must be under a nitrogenous one Atmosphere to react the silicon with the nitrogen.
Bei dem erfindungsgemäßen Verfahren wird das als thermoplastisches Harz verwendete Organosiliziumpolymer zersetzt und in ein wärmbeständiges Keramikmaterial wie SiC, Si3N4 und dergleichen, überführt, welches die gleichen Eigenschaften hat wie das Rohmaterialpulver. Daher kann man ein wärmebeständiges Keramikmaterial aus einem Sinterkörper mit einer hohen Dichte erhalten, indem man den Formkörper im Anschluß an die Zersetzungsstufe brennt.In the method according to the invention, this is called thermoplastic Resin used organosilicon polymer decomposes and turns into a heat-resistant ceramic material such as SiC, Si3N4 and the like, which has the same properties like the raw material powder. Hence one can a heat-resistant ceramic material obtained from a sintered body having a high density by making the molded body burns after the decomposition stage.
Als Organosiliziumpolymer, das erfindungsgemäß verwendet werden kann, kommen beispielsweise in Frage Polyborsiloxane, wie Polybordiphenylsiloxan, Polybordimethylsiloxan oder Polybormethylphenylsiloxan, wobeiBor, Silizium und Sauerstoff in den Gerüstkomponenten vorliegen, oder Polycarbosilane, bei denen Silizium und Kohlenstoff in den Gerüstkomponenten vorliegt, und die Methylgruppen in den an das Silizium gebundenen Seitenketten enthalten.As an organosilicon polymer that can be used according to the invention, For example, polyborosiloxanes such as polyboron diphenylsiloxane, polyboron dimethylsiloxane are suitable or polyboromethylphenylsiloxane, with boron, silicon and oxygen in the framework components are present, or polycarbosilanes, in which silicon and carbon are in the framework components is present, and contain the methyl groups in the side chains bonded to the silicon.
Erfindungsgemäß kann das Spritzvergießen in üblicher Weise in der für Kunstharze bekannten Art durchgeführt werden, und zwar durch übliches Spritzvergießen, durch Preßspritzverfahren, durch Preßverformen mit warmen Formwerkzeugen und dergleichen.According to the invention, the injection molding can be carried out in the usual manner in the for synthetic resins known type are carried out, namely by conventional injection molding, by transfer molding, by compression molding with hot molds and the like.
In den nachfolgenden Beispielen wird die Erfindung beschrieben.The invention is described in the following examples.
BEISPIEL 1 Zu 100 Gewichtsteilen einer pulvrigen Mischung aus 2 Gew.-% Bor, 2 Gew.-% Ruß, wobei der Rest ß-SiC ist mit einer durchschnittlichen Teilchengröße von mehr als 1 fm wurden 20 Gewichtsteile Polyborsiloxan gegeben und die erhaltene iviischung wurde erhitzt und verknetet. Nach dem verkneten wurde die Mischung bei 1700C unter einem Druck von 1000 kg/cm2 spritzvergossen, wobei man eine Gasturbinenschaufel einer Gesamtlänge von 50 mm und mit einer Flügellange von 25 mm erhielt. Nachdem man den erhaltenen Formkörper stufenweise auf 1500°C unter einer Argonatmosphäre erhitzt hatte, wurde das Polyborsiloxan vollständig in Siliziumkarbid überführt und es waren keinerlei organische Substanzen mehr in dem Formkörper vorhanden.EXAMPLE 1 To 100 parts by weight of a powdery mixture of 2% by weight Boron, 2 wt% carbon black, the remainder being β-SiC with an average particle size of more than 1 fm, 20 parts by weight of polyborosiloxane were added and the resulting The mixture was heated and kneaded. After kneading, the mixture was at 1700C under a pressure of 1000 kg / cm2 injection-molded using a gas turbine blade one Total length of 50 mm and with a wing length of 25 mm received. After the molded body obtained stepwise to 1500 ° C under a After being heated in an argon atmosphere, the polyborosiloxane was completely dissolved in silicon carbide transferred and there were no more organic substances present in the molded body.
Der so behandelte Formkörper wurde dann eine Stunde unter Argonatmosphäre bei 2000°C erhitzt, wobei man eine Gasturbinenschaufel aus Siliziumkarbid mit einer hohen Dichte von 2,91 erhielt.The shaped body treated in this way was then placed under an argon atmosphere for one hour heated at 2000 ° C, a gas turbine blade made of silicon carbide with a high density of 2.91.
BEISPIEL 2 Zu 100 Gewichtsteilen einer pulvrigen Mischung aus 3 Gew.-% MgO und 1 Gew.-% BeO, wobei der Rest S -Si3N4 ist, mit einer durchschnittlichen Teilchengröße von nicht mehr als 1 Zm wurden 15 Gewichtsteile polycarbosilan gegeben und die erhaltene Mischung wurde erhitzt und verknetet. Nach dem Verkneten wurde die Mischung einem Preßspritzverfahren bei 160°C bei einem Druck von 800 kg/cm² unterworfen, wobei man rechteckige Stäbe von 100 x 30 x 20 mm erhielt.EXAMPLE 2 To 100 parts by weight of a powdery mixture of 3% by weight MgO and 1 wt .-% BeO, the remainder being S -Si3N4, with an average Particle size of not more than 1 µm was given to 15 parts by weight of polycarbosilane and the obtained mixture was heated and kneaded. After kneading it was made the mixture by transfer molding at 160 ° C at a pressure of 800 kg / cm² subjected to obtaining rectangular bars of 100 x 30 x 20 mm.
Diese Formkörper wurden anschließend stufenweise auf 8000C in einer Argonatmosphäre erhitzt, wobei das Polycarbosilan sich vollständig zersetzte und in Siliziumkarbid überging. Der so behandelte Formkörper wurde dann 1,5 Stunden auf 16000C erhitztr wobei man einen Siliziumkarbid-Sinterkörper mit einer hohen Dichte von 2,86 erhielt, die aus einen homDgenentdis.pemenffeinent granularen Siliziumkarbidteilchen bestand und eine hervorragende thermische Schockbeständigkeit aufwies.These moldings were then gradually increased to 8000C in a Argon atmosphere heated, the polycarbosilane completely decomposed and changed into silicon carbide. The molded article thus treated was then 1.5 hours heated to 16000C, a silicon carbide sintered body with a high Density of 2.86 obtained from a homogeneously dis.pemen-finely granular silicon carbide particle and exhibited excellent thermal shock resistance.
Die vorliegende Erfindung ist zur Herstellung von siliziumhaltigen, nicht-oxidischen, wärmebeständigen Keramikartikeln mit komplizierten Formen und einer hohen Dichte geeignet. Deshalb ist die vorliegende Erfindung besonders geeignet zur Herstellung von. Maschinenteilen, wie Gasturbinen, Dieselmotoren und dergleichen aus ramik.The present invention is for the production of silicon-containing, non-oxide, heat-resistant ceramic articles with intricate shapes and suitable for a high density. Therefore, the present invention is particularly useful for production of. Machine parts such as gas turbines, diesel engines and the like from ramik.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2183179A JPS55116665A (en) | 1979-02-28 | 1979-02-28 | Manufacture of heat resisting ceramic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3007384A1 true DE3007384A1 (en) | 1980-09-04 |
Family
ID=12066007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19803007384 Ceased DE3007384A1 (en) | 1979-02-28 | 1980-02-27 | Silicon-contg. non-oxide ceramic article prepn. - by mixing silicon contg. powder with organo-silicon polymer, moulding and firing |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS55116665A (en) |
| DE (1) | DE3007384A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2470756A1 (en) * | 1979-11-30 | 1981-06-12 | Kurosaki Refractories Co | SIC-SI3N4 COMPOUND SYSTEM FOR SPECIAL CERAMIC HEAT-RESISTANT MATERIALS AND METHOD OF MANUFACTURE |
| FR2568865A1 (en) * | 1984-08-07 | 1986-02-14 | Kurosaki Refractories Co | PROCESS FOR OBTAINING SINTERED BODIES OF HIGH DENSITY SILICON NITRIDE |
| EP0341025A2 (en) * | 1988-05-03 | 1989-11-08 | E.I. Du Pont De Nemours And Company | Silicon carbide fibers and a process for preparing them |
| EP0361736A2 (en) * | 1988-09-26 | 1990-04-04 | Dow Corning Corporation | Curable organopolysiloxanes filled with silicon carbide powders and highly densified sintered bodies therefrom |
| EP0361735A2 (en) * | 1988-09-26 | 1990-04-04 | Dow Corning Corporation | Highly densified bodies from organopolysiloxanes filled with silicon carbide powders |
| EP0435494A2 (en) * | 1989-12-28 | 1991-07-03 | Dow Corning Corporation | Multicomponent binders for SiC powders |
| EP0468066A1 (en) * | 1990-07-23 | 1992-01-29 | Lanxide Technology Company, Lp | Process for molding ceramics using a liquid, curable ceramic precursor |
| US5190709A (en) * | 1989-06-29 | 1993-03-02 | Hercules Incorporated | Reaction injection molding of ceramics using a ceramic precursor as a binder |
| US5240658A (en) * | 1991-03-26 | 1993-08-31 | Lukacs Iii Alexander | Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases |
| US5530081A (en) * | 1993-04-01 | 1996-06-25 | Solvay Deutschland Gmbh | Plastic material composed of silicon carbide, directly-prepared polycarbosilane and organic solvent |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6016869A (en) * | 1983-07-02 | 1985-01-28 | 黒崎窯業株式会社 | Manufacture of silicon carbide sintered body |
| EP0286127B1 (en) * | 1987-04-10 | 1993-10-27 | Hitachi, Ltd. | Ceramic composite and process for production thereof |
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|---|---|---|---|---|
| DE2458683A1 (en) * | 1973-12-20 | 1975-07-03 | Ford Werke Ag | METHOD OF MANUFACTURING A MOLDED BODY FROM SILICON NITRIDE |
| DE2504547A1 (en) * | 1974-01-31 | 1975-08-07 | Advanced Materials Eng | PRODUCTION OF ARTICLES FROM SYNTHETIC CERAMIC FABRICS |
| DE2646694A1 (en) * | 1975-10-18 | 1977-04-28 | Res Inst Iron Steel | METHOD FOR MANUFACTURING METAL NITRIDE SINTERBODIES AND SILICON NITRIDE AND ALUMINUM NITRIDE SINTERBODIES obtained thereafter |
| DE2651140A1 (en) * | 1975-11-10 | 1977-05-18 | Res Inst Iron Steel | SILICON CARBIDE SINTER BODY AND METHOD OF MANUFACTURING THE SAME |
| DE2736073A1 (en) * | 1976-08-17 | 1978-02-23 | Kyoto Ceramic | PROCESS FOR MANUFACTURING DENSE, Sintered SILICON CARBIDE BODIES FROM POLYCARBOSILANE |
| DE2650083A1 (en) * | 1976-10-30 | 1978-05-03 | Daimler Benz Ag | non-porous silicon nitride mouldings prodn. - by moulding silicon powder and silicone resin binder, opt. hardening and nitriding |
-
1979
- 1979-02-28 JP JP2183179A patent/JPS55116665A/en active Pending
-
1980
- 1980-02-27 DE DE19803007384 patent/DE3007384A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2458683A1 (en) * | 1973-12-20 | 1975-07-03 | Ford Werke Ag | METHOD OF MANUFACTURING A MOLDED BODY FROM SILICON NITRIDE |
| DE2504547A1 (en) * | 1974-01-31 | 1975-08-07 | Advanced Materials Eng | PRODUCTION OF ARTICLES FROM SYNTHETIC CERAMIC FABRICS |
| DE2646694A1 (en) * | 1975-10-18 | 1977-04-28 | Res Inst Iron Steel | METHOD FOR MANUFACTURING METAL NITRIDE SINTERBODIES AND SILICON NITRIDE AND ALUMINUM NITRIDE SINTERBODIES obtained thereafter |
| DE2651140A1 (en) * | 1975-11-10 | 1977-05-18 | Res Inst Iron Steel | SILICON CARBIDE SINTER BODY AND METHOD OF MANUFACTURING THE SAME |
| DE2736073A1 (en) * | 1976-08-17 | 1978-02-23 | Kyoto Ceramic | PROCESS FOR MANUFACTURING DENSE, Sintered SILICON CARBIDE BODIES FROM POLYCARBOSILANE |
| DE2650083A1 (en) * | 1976-10-30 | 1978-05-03 | Daimler Benz Ag | non-porous silicon nitride mouldings prodn. - by moulding silicon powder and silicone resin binder, opt. hardening and nitriding |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2470756A1 (en) * | 1979-11-30 | 1981-06-12 | Kurosaki Refractories Co | SIC-SI3N4 COMPOUND SYSTEM FOR SPECIAL CERAMIC HEAT-RESISTANT MATERIALS AND METHOD OF MANUFACTURE |
| FR2568865A1 (en) * | 1984-08-07 | 1986-02-14 | Kurosaki Refractories Co | PROCESS FOR OBTAINING SINTERED BODIES OF HIGH DENSITY SILICON NITRIDE |
| EP0341025A2 (en) * | 1988-05-03 | 1989-11-08 | E.I. Du Pont De Nemours And Company | Silicon carbide fibers and a process for preparing them |
| EP0341025A3 (en) * | 1988-05-03 | 1991-01-09 | E.I. Du Pont De Nemours And Company | Silicon carbide fibers and a process for preparing them |
| EP0361736A2 (en) * | 1988-09-26 | 1990-04-04 | Dow Corning Corporation | Curable organopolysiloxanes filled with silicon carbide powders and highly densified sintered bodies therefrom |
| EP0361735A2 (en) * | 1988-09-26 | 1990-04-04 | Dow Corning Corporation | Highly densified bodies from organopolysiloxanes filled with silicon carbide powders |
| EP0361735A3 (en) * | 1988-09-26 | 1990-07-25 | Dow Corning Corporation | Highly densified bodies from organopolysiloxanes filled with silicon carbide powders |
| EP0361736A3 (en) * | 1988-09-26 | 1990-08-01 | Dow Corning Corporation | Curable organopolysiloxanes filled with silicon carbide powders and highly densified sintered bodies therefrom |
| US5190709A (en) * | 1989-06-29 | 1993-03-02 | Hercules Incorporated | Reaction injection molding of ceramics using a ceramic precursor as a binder |
| US5504047A (en) * | 1989-06-29 | 1996-04-02 | Lanxide Technology Company, Lp | Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases |
| US5389588A (en) * | 1989-06-29 | 1995-02-14 | Lukacs, Iii; Alexander | Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases |
| EP0435494A2 (en) * | 1989-12-28 | 1991-07-03 | Dow Corning Corporation | Multicomponent binders for SiC powders |
| EP0435494A3 (en) * | 1989-12-28 | 1992-07-15 | Dow Corning Corporation | Multicomponent binders for sic powders |
| EP0468066A1 (en) * | 1990-07-23 | 1992-01-29 | Lanxide Technology Company, Lp | Process for molding ceramics using a liquid, curable ceramic precursor |
| US5240658A (en) * | 1991-03-26 | 1993-08-31 | Lukacs Iii Alexander | Reaction injection molding of silicon nitride ceramics having crystallized grain boundary phases |
| US5530081A (en) * | 1993-04-01 | 1996-06-25 | Solvay Deutschland Gmbh | Plastic material composed of silicon carbide, directly-prepared polycarbosilane and organic solvent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55116665A (en) | 1980-09-08 |
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