DE9422477U1 - Friction unit used as a brake or clutch coupling is in the form of a porous ceramicized carbon body infiltrated with silicon by initiating a chemical reaction forming silicon carbide - Google Patents

Friction unit used as a brake or clutch coupling is in the form of a porous ceramicized carbon body infiltrated with silicon by initiating a chemical reaction forming silicon carbide

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Publication number
DE9422477U1
DE9422477U1 DE9422477U DE9422477U DE9422477U1 DE 9422477 U1 DE9422477 U1 DE 9422477U1 DE 9422477 U DE9422477 U DE 9422477U DE 9422477 U DE9422477 U DE 9422477U DE 9422477 U1 DE9422477 U1 DE 9422477U1
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Prior art keywords
friction unit
unit according
core
carbon
friction
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Expired - Lifetime
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DE9422477U
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German (de)
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Deutsches Zentrum fuer Luft und Raumfahrt eV
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Deutsches Zentrum fuer Luft und Raumfahrt eV
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Priority to DE9422458U priority Critical patent/DE9422458U1/en
Priority claimed from DE9422458U external-priority patent/DE9422458U1/en
Publication of DE9422477U1 publication Critical patent/DE9422477U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • C04B37/005—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of glass or ceramic material
    • 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
    • C04B35/573—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 by reaction sintering or recrystallisation
    • 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
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • 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
    • C04B37/00—Joining burned ceramic articles with other burned ceramic articles or other articles by heating
    • C04B37/003—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts
    • C04B37/006—Joining burned ceramic articles with other burned ceramic articles or other articles by heating by means of an interlayer consisting of a combination of materials selected from glass, or ceramic material with metals, metal oxides or metal salts consisting of metals or metal salts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
    • F16D69/02—Compositions of linings; Methods of manufacturing
    • F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3665—Moulds for making articles of definite length, i.e. discrete articles cores or inserts, e.g. pins, mandrels, sliders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/02—Ceramics
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/04—Ceramic interlayers
    • C04B2237/08—Non-oxidic interlayers
    • C04B2237/083—Carbide interlayers, e.g. silicon carbide interlayers
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/02—Aspects relating to interlayers, e.g. used to join ceramic articles with other articles by heating
    • C04B2237/16—Silicon interlayers
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/36—Non-oxidic
    • C04B2237/365—Silicon carbide
    • 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
    • C04B2237/00—Aspects relating to ceramic laminates or to joining of ceramic articles with other articles by heating
    • C04B2237/30—Composition of layers of ceramic laminates or of ceramic or metallic articles to be joined by heating, e.g. Si substrates
    • C04B2237/32—Ceramic
    • C04B2237/38—Fiber or whisker reinforced
    • C04B2237/385—Carbon or carbon composite

Abstract

Friction unit is in the form of a porous ceramicized carbon body infiltrated with silicon by initiating a chemical reaction forming silicon carbide. Before being infiltrated with the liquid silicon, the carbon body is structured so that hollow chambers and/or recesses for cooling and/or reinforcing are formed in defined inner regions which maintain their shape and size after ceramicizing and which form hollow chambers on the finished friction unit. A core is inserted into the carbon body and/or green body for structuring, the core corresponding to the recesses and/or hollow chambers.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (15)

1. Reibeinheit, insbesondere Brems- oder Kupplungskörper, zum reibenden Eingriff mit einem Gegenkörper, in Form eines porösen, mit flüssigem Silizium infiltrierten, durch Einleiten einer chemischen Reaktion unter Bildung von Siliziumkarbid kera­ misierten Kohlenstoffkörpers, dadurch gekennzeichnet, dass vor der Silizium- Infiltration der Kohlenstoffkörper so strukturiert ist, dass in definierten Innenberei­ chen Hohlräume und/oder Ausnehmungen zur Kühlung und/oder Versteifung gebil­ det sind, die nach der Keramisierung ihre Form und Größe beibehalten und in Be­ zug auf die fertiggestellte Reibeinheit Hohlräume bilden, wobei zur Strukturierung in den Kohlenstoffkörper und/oder den Grünkörper bei dem Aufbau wenigstens ein Kern eingebracht ist, der in seinen Abmessungen den zu bildenden Ausnehmungen und/oder Hohlräumen entspricht.1. friction unit, in particular brake or clutch body, for frictional engagement with a counter body, in the form of a porous, infiltrated with liquid silicon, by initiating a chemical reaction with formation of silicon carbide ceramized carbon body, characterized in that before the silicon infiltration Carbon body is structured in such a way that cavities and / or recesses for cooling and / or stiffening are formed in defined inner areas, which retain their shape and size after the ceramization and form cavities with respect to the finished friction unit, with structuring in the Carbon body and / or the green body is introduced in the construction at least one core, the dimensions of which correspond to the recesses and / or cavities to be formed. 2. Reibeinheit nach Anspruch 1, dadurch gekennzeichnet, dass der wenigstens eine Kern vor der Silizium-Infiltration entfernt ist.2. Friction unit according to claim 1, characterized in that the at least one Core is removed before silicon infiltration. 3. Reibeinheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Kern aus Gummi, Kunststoff, Metall, Keramik oder Kohlenstoff gebildet ist.3. friction unit according to claim 1 or 2, characterized in that the core Rubber, plastic, metal, ceramic or carbon is formed. 4. Reibeinheit nach Anspruch 3, dadurch gekennzeichnet, dass der Kern aus Styropor oder Hartschaum-Kunststoff gebildet ist.4. Friction unit according to claim 3, characterized in that the core made of polystyrene or rigid foam plastic is formed. 5. Reibeinheit nach Anspruch 4, dadurch gekennzeichnet, dass der Kern mittels eines Lösungsmittels herauslösbar ist.5. Friction unit according to claim 4, characterized in that the core by means of a Solvent is removable. 6. Reibeinheit nach Anspruch 1, dadurch gekennzeichnet, dass der Kern aus pyroli­ sierbarem Material besteht. 6. friction unit according to claim 1, characterized in that the core made of pyroli sizable material.   7. Reibeinheit nach Anspruch 6, dadurch gekennzeichnet, dass der Kern aus einem während der Pyrolyse rückstandsfrei beseitigbaren Material gebildet ist.7. A friction unit according to claim 6, characterized in that the core consists of one material which can be removed without residue is formed during the pyrolysis. 8. Reibeinheit nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass der Kern aus Polyvinylalkohol besteht.8. friction unit according to claim 6 or 7, characterized in that the core There is polyvinyl alcohol. 9. Reibeinheit nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass im Bereich der Ausnehmungen und/oder Hohlräume in den Kohlenstoffkörper die Aus­ nehmungen und/oder Hohlräume begrenzende Kohlenstofffaserschichten mit vor­ gegebener Orientierung eingebracht sind.9. friction unit according to one of claims 1 to 8, characterized in that in The area of the recesses and / or cavities in the carbon body Carbon fiber layers with recesses and / or cavities given orientation. 10. Reibeinheit nach Anspruch 9, dadurch gekennzeichnet, dass die Kohlenstofffaser­ schichten auf dem Kern aufgebaut sind.10. friction unit according to claim 9, characterized in that the carbon fiber layers are built on the core. 11. Reibeinheit nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Kohlenstoffkörper einen ersten Körper bildet und mit wenigstens einem zweiten Körper verbunden ist, wobei der zweite Körper einen Teil der Reibeinheit bildet.11. Friction unit according to one of claims 1 to 10, characterized in that the Carbon body forms a first body and with at least a second Body is connected, wherein the second body forms part of the friction unit. 12. Reibeinheit nach Anspruch 11, dadurch gekennzeichnet, dass der zweite Körper ein nach einem der Ansprüche 1 bis 10 hergestellter zweiter Kohlenstoffkörper ist.12. The friction unit according to claim 11, characterized in that the second body second carbon body produced according to one of claims 1 to 10. 13. Reibeinheit nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass der erste Körper als Reibkörper mit einer Reibfläche aufgebaut ist.13. A friction unit according to claim 11 or 12, characterized in that the first Body is constructed as a friction body with a friction surface. 14. Reibeinheit nach Anspruch 13, dadurch gekennzeichnet, dass der zweite Körper als Kernkörper mit einer guten Wärmeleit- und/oder Wärmespeicherfähigkeit ausgebil­ det ist.14. A friction unit according to claim 13, characterized in that the second body as Core body with a good heat conductivity and / or heat storage capacity det. 15. Reibeinheit nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, dass in den ersten und den zweiten Körper Ausnehmungen derart im Bereich ihrer Verbin­ dungsflächen eingebracht sind, dass sie sich zu einem gemeinsamen Hohlraum er­ gänzen.15. Friction unit according to one of claims 11 to 14, characterized in that in the first and the second body recesses in the area of their connection are introduced that they become a common cavity complement.
DE9422477U 1994-10-26 1994-10-26 Friction unit used as a brake or clutch coupling is in the form of a porous ceramicized carbon body infiltrated with silicon by initiating a chemical reaction forming silicon carbide Expired - Lifetime DE9422477U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9422458U DE9422458U1 (en) 1994-10-26 1994-10-28 Friction component mfr. - involves forming internal chambers or external recesses in carbon@ fibre preform, using cores and impregnating structure with fluid silicon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE9422458U DE9422458U1 (en) 1994-10-26 1994-10-28 Friction component mfr. - involves forming internal chambers or external recesses in carbon@ fibre preform, using cores and impregnating structure with fluid silicon

Publications (1)

Publication Number Publication Date
DE9422477U1 true DE9422477U1 (en) 2003-11-13

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ID=28050606

Family Applications (3)

Application Number Title Priority Date Filing Date
DE9422477U Expired - Lifetime DE9422477U1 (en) 1994-10-26 1994-10-26 Friction unit used as a brake or clutch coupling is in the form of a porous ceramicized carbon body infiltrated with silicon by initiating a chemical reaction forming silicon carbide
DE9422475U Expired - Lifetime DE9422475U1 (en) 1994-10-26 1994-10-28 Pre-product for a brake disk or coupling body comprises a carbon body penetrated by hardened polymers with recesses and/or hollow chambers formed in defined inner regions in the body
DE9422476U Expired - Lifetime DE9422476U1 (en) 1994-10-26 1994-10-28 Friction unit used as a brake disk or coupling body, comprises a carbon body representing a core body, and a carbon body representing a friction body

Family Applications After (2)

Application Number Title Priority Date Filing Date
DE9422475U Expired - Lifetime DE9422475U1 (en) 1994-10-26 1994-10-28 Pre-product for a brake disk or coupling body comprises a carbon body penetrated by hardened polymers with recesses and/or hollow chambers formed in defined inner regions in the body
DE9422476U Expired - Lifetime DE9422476U1 (en) 1994-10-26 1994-10-28 Friction unit used as a brake disk or coupling body, comprises a carbon body representing a core body, and a carbon body representing a friction body

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DE (3) DE9422477U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006023561A1 (en) * 2006-05-19 2007-11-22 Audi Ag Process for the production of ceramic materials based on silicon carbide
CN109261941B (en) * 2018-10-17 2020-03-17 西安交通大学 Preparation method of porous mesh ceramic reinforced steel-iron-based composite brake block

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Publication number Publication date
DE9422475U1 (en) 2003-11-06
DE9422476U1 (en) 2003-09-11

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