Audi Ag

Sgl Carbon Se

Sgl Carbon Ag

Audi

Ingrid Krätschmer

Andreas Kienzle

Michael Heine

Moritz Bauer

Rainer Zimmermann-Chopin

Oswin Öttinger

Wilhelm Frohs

Dominik Rivola

Stefan Klein

Peter Domagalski

Alfred Häusler

Dieter Wüstner

A method for producing the component, and to the use of the component. The method for producing a three-dimensional, ceramic component containing silicon carbide, by a) providing a powdery composition having a grain size (d50) between 3 microns and 500 microns and comprising at least 50 wt % of coke, b) providing a liquid binder, c) depositing a layer of the material provided in a) in a planar manner and locally depositing drops of the material provided in b) onto said layer and repeating step c), the local depositing of the drops in the subsequent repetitions of the step is adapted in accordance with the desired shape of the component to be produced, d) at least partially curing or drying the binder and obtaining a green body having the desired shape of the component, e) carbonising the green body, and f) siliconising the carbonised green body by infiltration with liquid silicon.

3-D printing of a ceramic component

A composition comprising polymer-bound fiber tows containing carbon fibers, the polymer-bound fiber tows having an average length of 3 mm to 50 mm measured in the fiber direction, and an average bundle thickness of 0.1 mm to 10 mm measured perpendicular to the fiber direction, and in which at least 75% of all polymer-bound fiber tows have a length that is at least 90% and not greater than 110% of the average length combined with a carbon-ceramic material.

Friction-tolerant disks made of fiber-reinforced ceramic

Method for manufacturing a friction disk including preparing a mixture including a carbide-forming element having an average particle size &#x2266;2,000 &#x3bc;m, a resin, optionally a binder, and optionally fine carbon, and/or short carbon fibers; forming the mixture at &#x2266; to 280&#xb0; C. to produce a molded body; heating the molded body to approximately 750&#xb0; C. to approximately 1300&#xb0; C. to form a porous carbon body including a carbon residue; heating the porous carbon body to a temperature above the melting point of the carbide-forming element thereby reacting the carbide-forming element with at least a portion of the carbon residue to yield an alveolar structure; infiltrating the alveolar structure with silicon at a temperature above the melting point of silicon thereby filling at least one pore of the alveolar structure with silicon and reacting the silicon with an amount of unreacted carbon residue to form silicon carbide; and obtaining a friction disk.

Method for manufacturing friction disks with ceramic materials with improved friction layer

The present invention relates to a material including a matrix and at least one reinforcing element introduced therein, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof, and the reinforcing element is spherical to ellipsoidal in shape and has an onionskin-like structure. The present invention further relates to a method for producing a material including steps preparing at least one spherical to ellipsoidal reinforcing element having an onionskin-type structure, and introducing the reinforcing element into a matrix, wherein the matrix is selected from the group consisting of plastic, carbon, ceramic, glass, clay, metal, and combinations thereof. The present invention further relates to use of the material in a friction application, as abrasion protection, an injection molding part, a support plate, catalyst substrate or as bone replacement material.

Material, method for producing a material and use thereof

Ceramic materials with a matrix which contains at least one carbide, at least one carbide-forming element and carbon, and which furthermore contain a dispersed phase of carbon particles with spherical shape and an average diameter of 0.2 &#x3bc;m to 800 &#x3bc;m, a process for their production and their use for thermal insulation, as a protective layer in ceramic armoring against mechanical action, or as a friction layer in brake disks or clutch disks.

Ceramic materials containing spherical shaped carbon particles

A process for the impregnation of carbon fiber bundles enables the carbon fiber bundles to be impregnated with a curable liquid resin without the impregnated fiber bundles sticking together. The fiber bundles are present in a mechanically generated fluidized bed during the impregnation and are held in the fluidized bed until the resin has been cured or at least dried. A resin-impregnated carbon fiber bundle, a shaped body and an intermediate body for silicization are also provided.

Process for the impregnation of carbon fiber bundles, resin-impregnated carbon fiber bundle, shaped body and intermediate body for silicization

Carbon-ceramic brake disks that comprise several layers, whereby at least one layer is used as a bearing element and at least one layer acts as a friction layer, whereby the bearing element and at least one friction layer are separated by an intermediate layer, characterized in that the intermediate layer has reinforcement fibers in the form of fiber bundles, whereby the fiber bundles are encased by a layer that consists of a mixture of silicon carbide, silicon and carbon, which can be obtained by heat treatment of a mixture that consists of silicon powder and a carbonized resin or carbonized pitch at a temperature of 900&#xb0; C. up to 1700&#xb0; C. in an environment devoid of oxidizing agents. A process for their manufacture and use, in particular in automotive brake systems.

Brake disk with intermediate layer

Friction members are composed of a ceramic composite material. The friction members can be used for motor vehicles as a clutch disk for friction clutches, for transmitting motive power, or as a brake disk. A friction zone of the friction member is composed of ceramic, in particular of Si and SiC. A core zone of the friction member is made from fiber-reinforced C/SiC, in particular of long fiber woven fabric-reinforced and short fiber-reinforced C/SiC.

Growing community of inventors

Biberbach, Germany

Ingrid Krätschmer