The invention relates to boron nitride agglomerates, comprising hexagonal boron nitride primary particles, wherein the hexagonal boron nitride primary particles are connected to one another by means of an inorganic binding phase comprising at least one nitride and/or oxynitride. The invention also relates to a method for producing such boron nitride agglomerates, wherein boron nitride starting powder in the form of boron nitride primary particles is mixed with binding-phase raw materials, processed into granules or moulded bodies and these are then subjected to a temperature treatment at a temperature of at least 1000°C in a nitriding atmosphere, and the obtained granules or moulded bodies are comminuted and/or fractionated if necessary. The boron nitride agglomerates according to the invention are suitable as a filler for polymers to be used for producing polymer-boron nitride composite materials.
C04B 35/583 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures à base de nitrure de bore
C09C 1/00 - Traitement de substances inorganiques particulières, autres que des charges fibreuses Préparation du noir de carbone
The invention relates to an axial bearing comprising a slide ring (1), a counter-ring (2) and an elastic mounting (3) of the slide ring, wherein the slide ring (1) is integral and has a structuring on the running surface thereof which enables the development of a stable, hydrodynamic lubricating film and wherein the structuring of the running surface occurs so that the running surface has three or more elevations (6), wherein the contact surfaces (8) thereof are even with the counter-ring (2).
The invention relates to a shaped body, comprising a substrate with a firmly adhering interlayer, wherein the interlayer comprises 92-98% by weight silicon nitride (Si3N4) and 2-8% by weight silicon dioxide (SiO2), and wherein the interlayer has a total oxygen content of ≤ 8% by weight and a hardness of at least 10 HB 2.5/3 according to DIN EN ISO 6506-1. The invention also relates to a method for producing such a shaped body, a coating suspension for use in such a method and the use of a shaped body according to the invention in the area of corrosive nonferrous metal melts.
C23C 18/12 - Revêtement chimique par décomposition soit de composés liquides, soit de solutions des composés constituant le revêtement, ne laissant pas de produits de réaction du matériau de la surface dans le revêtementDépôt par contact par décomposition thermique caractérisée par le dépôt sur des matériaux inorganiques, autres que des matériaux métalliques
C03C 17/22 - Traitement de surface du verre, p. ex. du verre dévitrifié, autre que sous forme de fibres ou de filaments, par revêtement par d'autres matières inorganiques
C30B 11/00 - Croissance des monocristaux par simple solidification ou dans un gradient de température, p. ex. méthode de Bridgman-Stockbarger
C30B 15/10 - Creusets ou récipients pour soutenir le bain fondu
C30B 35/00 - Appareillages non prévus ailleurs, spécialement adaptés à la croissance, à la production ou au post-traitement de monocristaux ou de matériaux polycristallins homogènes de structure déterminée
4.
TITANIUM DIBORIDE GRANULES AS EROSION PROTECTION FOR CATHODES
The invention relates to titanium diboride granules comprising aggregates of titanium diboride primary particles, where the titanium diboride granules have a rounded shape and are fracture-resistant. The invention further relates to a process for producing such titanium-diboride granules, their use for covering graphite cathodes in electrolysis cells in Al melt flux electrolysis or for the repair of holes in the cathode bottom of electrolysis cells and likewise a process for the repair of holes in the cathode bottom of electrolysis cells.
C04B 35/63 - Préparation ou traitement des poudres individuellement ou par fournées utilisant des additifs spécialement adaptés à la formation des produits
C25C 3/06 - Production, récupération ou affinage électrolytique de métaux par électrolyse de bains fondus de l'aluminium
C04B 35/58 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures
5.
BORON NITRIDE AGGLOMERATES, METHOD FOR PRODUCING SAME, AND USE THEREOF
The invention relates to boron nitride agglomerates, comprising platelet-shaped hexagonal boron nitride primary particles, which have agglomerated with a preferred orientation, wherein the agglomerates have a scale-like form. The invention further relates to a method for producing such boron nitride agglomerates, wherein platelet-shaped hexagonal boron nitride primary particles agglomerate such that they align with respect to each other with a preferred orientation. The scale-like agglomerates according to the invention are suitable as fillers for polymers for producing polymer-boron nitride composites and for hot-pressing boron nitride sintered bodies.
C04B 35/583 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures à base de nitrure de bore
C04B 35/626 - Préparation ou traitement des poudres individuellement ou par fournées
C01B 21/064 - Composés binaires de l'azote avec les métaux, le silicium ou le bore avec le bore
6.
WEAR-RESISTANT SEPARATOR FOR SEPARATING SAND AND ROCK PARTICLES
The invention relates to a separator for separating sand and/or rock particles, which is suitable as an integral component of extraction equipment for extracting liquids or gases from deep boreholes, wherein the separator comprises at least one ceramic filter module (1), wherein the filter module (1) comprises a) an annular stack (6) of brittle hard annular disks (7), the upper side (16) of which has at least three elevations (8) distributed uniformly over the circular periphery of the disks, wherein the disks (7) are stacked and clamped in such a way that in each case there is a separating gap (9) between the individual disks (7) for separating sand and rock particles, b) a coupling element (10) at the upper end and a coupling element (11) at the lower end of the annular stack (6), c) a clamping device (14, 15) for clamping the annular stack (6) axially, d) an outer cage (5) for the mechanical protection of the filter module (1), e) a coupling element (12) at the upper end and a coupling element (13) at the lower end of the filter module (1) for connecting the filter module (1) to further components of the extraction equipment. The invention further relates to the use of a separator according to the invention for separating sand and rock particles in a method for extracting liquids or gases from rock or deep boreholes.
The invention relates to a separation apparatus for tubular flow-through apparatuses (22) which are used to convey liquids or gases from drilled wells in rock or deep wells, where the separation apparatus is suitable for separating off sand and rock particles and comprises: an annular stack (20) made up of hard and brittle annular discs, where the discs (30) are stacked and clamped in such a way that a separation gap (37) for separating off sand and rock particles is present between each of the individual discs (30); a coupling element (18, 19) is present at one or both ends of the annular stack (20); a clamping device which firstly makes it possible to clamp the hard and brittle discs (30) flexibly and secondly to fasten the annular stack (20) in a variable fashion on the tubular flow-through apparatus (22) is present at one or both ends of the annular stack (20). The invention likewise relates to the use of a separation apparatus according to the invention for separating off sand and rock particles in a process for conveying liquids or gases from drilled wells in rock or deep wells by means of tubular flow-through apparatuses.
B01D 29/46 - Éléments filtrants à arêtes, c.-à-d. utilisant des surfaces imperméables adjacentes à éléments plats empilés
B01D 39/20 - Autres substances filtrantes autoportantes en substance inorganique, p. ex. papier d'amiante ou substance filtrante métallique faite de fils métalliques non-tissés
B01D 46/40 - Séparateurs de particules utilisant des filtres à arêtes, c.-à-d. comportant des surfaces imperméables adjacentes, p. ex. appareils de précipitation de poussières
SUSPENSION FOR PRODUCING A LAYER INCREASING THE COEFFICIENT OF FRICTION, MOLDED PART HAVING SUCH A LAYER INCREASING THE COEFFICIENT OF FRICTION, METHOD FOR THE PRODUCTION THEREOF, AND USE THEREOF
The invention relates to a suspension for producing a layer increasing the coefficient of friction on a substrate, comprising a liquid suspension medium, an extensively inorganic bonding agent, or the precursor compounds thereof, and suspended hard material particles. The invention further relates to a molded part, comprising a substrate and a layer increasing the coefficient of friction applied to at least one part of the surface of the substrate, comprising an extensively inorganic bonding agent matrix and hard material particles embedded therein, wherein the thickness of the bonding agent matrix is less than the average particle size of the hard material particles, so that the hard material particles protrude out from the bonding agent matrix, and wherein the layer increasing the coefficient of friction has been formed from a suspension according to the invention. The invention further relates to a method for producing the molded part described above, and the use thereof for producing press or clamped connections as a retaining element for screw connections.
F16D 1/08 - Accouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre avec moyeu de serrageAccouplements pour établir une liaison rigide entre deux arbres coaxiaux ou d'autres éléments mobiles d'une machine pour montage d'un organe sur un arbre ou à l'extrémité d'un arbre avec moyeu et clavette longitudinale
F16B 2/00 - Attaches à serrage par friction largables
F16B 39/22 - Blocage des vis, boulons ou écrous dans lequel le verrouillage se fait en même temps que le vissage ou le serrage
A first embodiment of the invention relates to a separator for separating sand and rock particles during the extraction of liquids or gases from rock bores. Said separator comprises a plurality of stacked, annular disks of a brittle hard material which disks are axially braced by means of a supporting structure and have at least three spacers on top which are evenly distributed across the circumference of the disks. The disks are stacked in such a manner that the spacers lie on top of each other and that a respective separating gap having a height of from 0.05 to 1 mm, preferably 0.2 to 0.5 mm separates the individual disks. A second embodiment of the invention relates to a separator for separating sand and rock particles during the extraction of liquids or gases from rock bores. Said separator comprises a plurality of stacked, sleeve-type elements of a brittle hard material which elements are axially braced by means of a supporting structure, the sleeve-type elements comprising slots having a slot width of from 0.05 to 1 mm, preferably 0.2 to 0.5 mm.
The invention relates to a fastening element for screw connections in the form of an intermediate layer between the screw head and cladding material and/or between nut and cladding material, wherein the base body of the element comprises a metallic material, to the top and bottom side of which hard material particles are attached, characterized in that the hard material particles are attached by means of a metallic bonding phase, wherein the thickness of the metallic bonding phase is less than the mean diameter of the hard material particles so that the hard material particles protrude out of the metallic bonding phase. The invention also relates to the use of a fastening element according to the invention for highly stressed, permanent and removable screw connections, wherein the fastening element is used as an intermediate layer between the screw head and the cladding material and/or between nut and cladding material.
F16B 39/24 - Blocage des vis, boulons ou écrous dans lequel le verrouillage se fait en même temps que le vissage ou le serrage par rondelles, rondelles à ressort ou plaques élastiques qui bloquent contre l'objet
F16B 43/00 - Rondelles ou dispositifs équivalentsAutres dispositifs de support pour têtes de boulons ou d'écrous
The invention relates to a component comprising a plurality of plates (1) stacked on each other, at least one of said plates being made of a ceramic material and in which a channel area is formed of fluid flow guide channels (3) by means of webs (2), said channels having a flow connection to inlet and outlet openings (4, 5, 6, 7), wherein the stack of plates is connected by force fit by means of a clamping device, and wherein a flat seal (8) is disposed between each of the individual plates (1) of the stack, wherein the flat seal (8) is made of an elastic and/or compressible material and covers both the channel area and the areas encompassing the inlet and outlet openings (4, 5, 6, 7), and at least partially covers the top sides of the webs (2) forming the channels. The components according to the invention are pressure-tight, resistant to thermal shock, and can be dismantled. They are particularly well suited as heat exchangers and microreactors.
F28D 9/00 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes en forme de plaques ou de laminés pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation
F28F 3/08 - Éléments construits pour être empilés, p. ex. pouvant être séparés pour leur nettoyage
F28F 21/04 - Structure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de céramiqueStructure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de bétonStructure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de pierre naturelle
12.
METHOD FOR AFFIXING A CONNECTION ELEMENT TO A WORK PIECE AND COMPONENT MADE FROM A WORK PIECE COMPRISING A CONNECTION ELEMENT AFFIXED THERETO
The invention relates to a method for affixing to a metallic work piece a connection element for enabling a friction-increasing, clearance-free, reversible connection of work pieces to be joined, wherein the connection element comprises a metallic film with hard material particles on the joining surfaces thereof, said hard material particles being affixed to the metal film by way of a metallic binding phase, characterized in that the connection element is affixed to the metallic work piece by welding for secure mounting and transport, thereby forming localized welding points. The invention further relates to a component comprising a metallic work piece and a connection element affixed thereto through localized welding points for secure mounting and transport, wherein the connection element enables a friction-increasing, clearance-free, reversible connection of work pieces to be joined and comprises a metallic film with hard material particles on the joining surfaces thereof, said hard material particles being affixed to the metal film by way of a metallic binding phase. The components according to the invention are suitable for positive-fitted, friction-increasing, clearance-free, reversible connection of work pieces to be joined in machine, systems, and vehicle design.
The invention relates to a composite material based on transition metal borides from subgroups IV to VI of the periodic system and a metallic binding phase. Said composite material is characterized in that the metallic binding phase is composed of copper and at least one auxiliary metal which can be partially or completely dissolved in the copper phase and in that the composite material has a density of at least 97 percent of the theoretical density. The invention also relates to a method for producing such a composite material, comprising the following steps: a powdered transition metal boride and at least one powdered auxiliary metal are mixed while optionally adding organic binders and auxiliary pressing agents either i) in a dry form for producing a homogeneous powder mixture or ii) in the presence of a liquid suspending medium for producing a homogeneous powder suspension; b) if a powder suspension is produced, a powder granulate is produced from the powder suspension; c) the powder mixture obtained in step a) or the powder granulate obtained in step b) is compressed to obtain a green compact; d) the obtained green compact is sintered without applying pressure in a vacuum or in protective gas at a temperature ranging from 1050 to 1750°C, preferably 1550 to 1650°C; and e) the obtained sintered part is infiltrated with molten copper. The composite material according to the invention is suitable as a wear-resistant material for uses requiring high heat conductivity, good resistance to thermal shocks, and high electric conductivity.
B22C 1/22 - Compositions des matériaux réfractaires pour moules ou noyauxLeur structure granulaireCaractéristiques chimiques ou physiques de la mise en forme ou de la fabrication des moules caractérisées par l'emploi des agents liantsMélange d'agents liants d'agents organiques de résines naturelles ou synthétiques
The invention relates to a release agent for the production of a permanent, firmly adhering separating layer on a substrate, comprising a suspension of solid particles, wherein the solid particles comprise 67-95 wt.-% silicon nitride and 5-33 wt.-% of an SiO2-based high temperature binder, wherein the SiO2-based high temperature binder is derived from SiO2 precursors and pretreated by temperature treatment in a temperature range from 300-1300°C. The invention further relates to molded bodies made of a substrate having a permanent, firmly adhering separating layer and to a method for the production thereof. The molded bodies according to the invention are suitable for being used in the field of corrosive non-ferrous metal melts.
C03C 17/22 - Traitement de surface du verre, p. ex. du verre dévitrifié, autre que sous forme de fibres ou de filaments, par revêtement par d'autres matières inorganiques
C04B 41/50 - Revêtement ou imprégnation avec des substances inorganiques
C23C 20/08 - Revêtement avec des matériaux inorganiques autres que des matériaux métalliques avec des composés, des mélanges ou des solutions solides, p. ex. borures, carbures, nitrures
C30B 11/00 - Croissance des monocristaux par simple solidification ou dans un gradient de température, p. ex. méthode de Bridgman-Stockbarger
C30B 15/10 - Creusets ou récipients pour soutenir le bain fondu
The invention relates to lateral plates for thin strip casting of steel, having either a multi-layer structure of layers having different hardnesses or a single-layer structure in which the lateral edges of the lateral plate, that are used as a contact surface between the lateral plate and the rollers of the thin strip casting arrangement, are reduced.
B22D 11/06 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules dont les parois se déplacent, p. ex. entre des rouleaux, des plaques, des courroies, des chenilles
C04B 35/66 - Réfractaires monolithiques ou mortiers réfractaires, y compris ceux contenant de l'argile
16.
SINTERED, POLYCRYSTALLINE COMPOSITE MATERIALS BASED ON BORON NITRIDE AND ZIRCONIUM DIOXIDE, METHOD FOR THE PRODUCTION AND USE THEREOF
The invention relates to sintered, polycrystalline composite materiasl based on boron nitride and zirconium dioxide, wherein the proportion of zirconium dioxide in the form of unstablised zirconium dioxide is 58 to ឬ 70 % in weight and the proportion of boron nitride is ᡶ 30 to 42 % in weight. The invention also relates to a method for producing said type of composite materials in which the powder mixtures of boron nitride and unstabilised zirconium dioxide, in the corresponding proportions, are hot-pressed in the temperature range of between 1500 to 1800°C and at a pressure of between 10 - 30 MPa. The invention also relates to the use of composite materials for metallurgical applications, in particular as lateral plates for thin strip casting of steel or as pulling or crushing rings in horizontal continuous casting of steel.
C04B 35/48 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base d'oxydes à base d'oxydes de zirconium ou d'hafnium ou de zirconates ou d'hafnates
C04B 35/583 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures à base de nitrure de bore
B22D 11/04 - Coulée continue des métaux, c.-à-d. en longueur indéfinie dans des moules sans fond
17.
MOLDED BODY HAVING A PERMANENT SILICON NITRIDE-CONTAINING HARD COATING, METHOD FOR THE PRODUCTION THEREOF, AND USE THEREOF
The invention relates to a molded body made of a substrate having a permanent hard coating, wherein the hard coating comprises up to 75 weight % silicon nitride and at least 25 weight % of an inorganic binder, the total oxygen content of the hard coating amounting to ᡶ 15 weight %. The molded bodies according to the invention are suitable for use in the area of corrosive non-ferrous metal melts.
C03C 17/22 - Traitement de surface du verre, p. ex. du verre dévitrifié, autre que sous forme de fibres ou de filaments, par revêtement par d'autres matières inorganiques
C23C 20/06 - Revêtement avec des matériaux inorganiques autres que des matériaux métalliques
C23C 26/00 - Revêtements non prévus par les groupes
C23C 18/02 - Revêtement chimique par décomposition soit de composés liquides, soit de solutions des composés constituant le revêtement, ne laissant pas de produits de réaction du matériau de la surface dans le revêtementDépôt par contact par décomposition thermique
18.
CERAMIC EVAPORATOR BOAT, METHOD FOR ITS PRODUCTION AND USE THEREOF
The invention relates to an evaporator boat of electrically conductive ceramic material for the evaporation of metal, characterized in that one or more flow ducts of a width of at least 1.5 mm and a depth of up to 3 mm are provided in the functional evaporating area, from which the evaporation of the metal takes place, wherein at least one of the delimiting areas of the flow ducts is modified in a way conducive to wetting. The evaporator boats according to the invention display excellent evaporation and/or an extended service life.
The invention relates to an aqueous size for producing a BN-containing coating on a substrate, comprising, based on the solid content of the size, a) 45-90 wt.% BN, b) 3-25 wt.% boehmite nanoparticles, c) 0.5-5 wt.% of at least one borate, d) 2-30 wt.% of at least one water-insoluble boron compound different from a) and c) and e) 2-30 wt.% of an organic compound, the solid content of the size being 15-60 wt.%. Said size is suitable for producing self-sealing and hot -flexible coatings with exceptional suitability for foundry applications.
C04B 41/00 - Post-traitement des mortiers, du béton, de la pierre artificielle ou des céramiquesTraitement de la pierre naturelle
C09D 5/00 - Compositions de revêtement, p. ex. peintures, vernis ou vernis-laques, caractérisées par leur nature physique ou par les effets produitsApprêts en pâte
C23C 26/00 - Revêtements non prévus par les groupes
20.
SINTERED MATERIAL, SINTERABLE POWDER MIXTURE, METHOD FOR PRODUCING SAID MATERIAL AND USE THEREOF
The invention relates to a sintered material based on transition-metal diborides, containing: a) a main phase with between 90 and 99 wt. % of a fine-grained transition-metal diboride, or transition-metal diboride mixed crystal consisting of at least two transition-metal diborides, or mixtures of diboride mixed crystals of this type, or mixtures of diboride mixed crystals of this type and one or more transition-metal diborides, the transition metals being selected from the sub-groups IV to VI of the periodic table, b) a second phase with between 1 and 5 wt. % of a particulate boron carbide and/or silicon carbide and c) optionally as the third phase up to 5 wt. % of a non-continuous, grain boundary phase. The invention also relates to a pulverulent, sinterable mixture for producing a sintered material of this type, to a method for producing the sintered material, preferably by pressureless sintering and to the use of the sintered material as an anti-corrosion material for molten salt and metal, in particular molten material containing cryolite.
C04B 35/58 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures
The invention relates to a sintered wear-resistant material based on transition metal diborides, comprising: a) as the main phase 80-98.8% by weight of a fine-grained transition metal diboride or transition metal diboride mixed crystal of at least two transition metal diborides or mixtures of such diboride mixed crystals or mixtures of such diboride mixed crystals with one or more transition metal diborides, wherein the transition metals are selected from the IV to VI subgroups of the periodic system, b) as the second phase 0.2 to 5% by weight of a continuous, oxygen-containing grain boundary phase, and c) as the third phase 1 - 15% by weight of particulate boron carbide and/or silicon carbide. Furthermore, the invention relates to a powdered sinterable mixture for producing such a sintered material, a method for producing the sintered material, preferably by pressureless sintering, and also the use of the sintered material for producing wearing parts in general mechanical engineering, in particular chemical plant engineering.
C04B 35/58 - Produits céramiques mis en forme, caractérisés par leur compositionCompositions céramiquesTraitement de poudres de composés inorganiques préalablement à la fabrication de produits céramiques à base de non oxydes à base de borures, nitrures ou siliciures
22.
PLATE HEAT EXCHANGER, METHOD FOR ITS PRODUCTION, AND ITS USE
The invention relates to a plate heat exchanger composed of a plurality of plates (1), preferably made from sintered ceramic material, in which fluid flow guiding ducts (2) as a duct system are formed such that a substantially meandering profile of the fluid flow is generated over the surface of the respective plate, wherein the side walls (3) of the guiding ducts (2) have a plurality of apertures (4) which lead to turbulence of the fluid flow. The invention also relates to a method for producing a plate heat exchanger of said type, in particular by means of a diffusion welding process in which the plates are joined to form a seam-free monolithic block. The plate heat exchangers according to the invention are suitable in particular for applications at high temperatures and/or with corrosive media and also as reactors.
F28D 9/00 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes en forme de plaques ou de laminés pour les deux sources de potentiel calorifique, ces sources étant en contact chacune avec un côté de la paroi d'une canalisation
F28F 21/04 - Structure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de céramiqueStructure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de bétonStructure des appareils échangeurs de chaleur caractérisée par l'emploi de matériaux spécifiés de pierre naturelle
F28F 3/04 - Éléments ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p. ex. avec des ailettes, avec des évidements, avec des ondulations les moyens faisant partie intégrante de l'élément
brevets