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WO/1998/038660A1 |
A capacitor constituted of a pair of electrodes and a dielectric provided between the electrodes, wherein one of the electrodes is made of sintered niobium nitride. Preferably, the dielectric is made of niobium oxide, and the other elect...
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WO/1998/037249A1 |
The invention relates to tantalum powders poor in alkali and fluorine having a primary particle size of between 150 and 300 nm and a secondary particle size, defined by sintering of the primary particles, of more than 5 $g(m)m. By sinter...
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WO/1998/037248A1 |
The invention relates a tantalum powder free of alkali and fluorine, which for a relatively small primary particle size has comparatively large secondary particles and is suitable for producing capacitors with a specific charge of betwee...
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WO/1998/035806A1 |
A powder feed system for delivering a quantity of particulate material to a die cavity (5) of a powder press is provided. The powder feed delivery system includes a receptacle (13) for receiving and delivering particulate material to the...
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WO/1998/032885A1 |
The invention concerns leached nanocrystalline materials having a large specific surface area particularly useful for storing hydrogen or for making electrodes for catalysis or electrocatalysis, such as those used in fuel cells. These ma...
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WO/1998/024584A1 |
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separated, e.g., rod (3) and cap (5), forgings and coining or forging them together pr...
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WO/1998/022633A1 |
The present invention pertains to a high-temperature aluminium material intended for use in the production of internal combustion engine pistons and obtained by mechanically alloying aluminium powders and one or more aluminium alloy addi...
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WO/1998/019812A1 |
A method for making multi-channel structures suitable for use as filters, catalyst carriers or the like. A composite rod (11) comprising an outer shell (12) and an inner core (13) is formed of respective mixtures of powders. The mixture ...
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WO/1998/018587A2 |
A continuous extrusion process and device are disclosed for rods (24) made of a plastic raw material and provided with at least one inner channel (22) which at least in part is spiral-shaped. The raw material may be a powder-metallurgica...
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WO/1998/016339A1 |
The present invention concerns a method of producing powder-metallurgical compacted components, which during subsequent processing are split into individual parts mating in pairs, sintered and optionally heat-treated and remated. Accordi...
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WO/1998/016338A1 |
A sintered powder metal part is surface densified by surface heating followed by repressing. Surface heating is preferably done to a temperature which is just below the critical temperature where the steel alloy material of the part tran...
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WO/1998/010642A1 |
This invention provides a method of providing a barrier coating over the surfaces of a plurality of sinkers (10) each having a line passageway (21) therethrough, and to sinkers (10) having a barrier coating (25, 27) over the exposed surf...
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WO/1998/004756A1 |
A sliding material which is used for bearings, washers and other parts of automobiles, industrial machines, agricultural machines and the like, possesses an excellent abrasion resistance, and is useful under sever boundary lubricating co...
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WO/1997/047418A1 |
The present invention concerns compacted and optionally presintered bodies, which are prepared from metal powders and which have densified surfaces, obtained by shot peening or rolling.
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WO/1997/047445A1 |
A pressurized feed shoe (10) for delivering particulate materials to fill a die cavity (26) is provided. The feed shoe (10) includes a feed shoe body (11) comprising a vessel for receiving a quantity of particulate material. The feed sho...
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WO/1997/045219A1 |
A powder metal gear wheel having a core density of at least 7.3 g/cc, and in one embodiment 7.4 to 7.6 g/cc and a hardened carburized surface. A method of manufacturing transmission gears comprises, sintering a powder metal blank to prod...
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WO/1997/044292A1 |
The invention concerns a method of stabilizing a foamed starting suspension material which contains the following constituents: a) inorganic sintering material; b) a propellant source; c) an agent which forms a ring structure when the pH...
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WO/1997/043560A1 |
A friction member produced by mixing metal binder powders, at least one lubricant and fillers in the form of hard particles, then shaping and sintering the mixture. Powders with a particle size no greater than 250 microns are used at lea...
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WO/1997/043067A1 |
A multiply-acting powder metal press is disclosed for making green form double helical gear compacts. The press has inner and outer lower punches, and an upper, outer punch. The upper and lower outer punches have left hand and right hand...
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WO/1997/042424A1 |
A bearing cap (10, 110, 210, 310, 410, 510) made from sintered powder metal has integrally formed tapered bosses (40, 140, 240, 340, 440, 540) surrounding its bolt holes (26, 126, 226, 326, 426, 526) which extend into counterbores (L) in...
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WO/1997/040777A2 |
A method for making dies or molds from powdered metals is disclosed. The method includes the steps of: providing a pattern of a desired shape to define the mold or die cavity configuration (4); providing a canister (10); placing the patt...
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WO/1997/038771A1 |
This invention relates to a process for making shaped copper articles directly from a copper-bearing material wherein a copper bearing material (10) is contacted with an effective amount of an aqueous leaching solution (40) to form a cop...
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WO/1997/034720A1 |
The invention relates to composite materials substantially comprising: a cermet material with a binding metal phase of 3 to 30 mass %, with a rest formed from at least one carbonitride phase; or a hard metal with at least one hard materi...
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WO/1997/030808A1 |
The invention concerns a material for the powder-metallurgical production from a powder mixture containing at least approximately 50 wt.% copper in particular of valve seat rings or valve guides with high resistance to wear and corrosion...
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WO/1997/029885A1 |
According to the present invention there is provided a method of making a cutting insert with a hole for clamping to a tool holder wherein a superhard abrasive material is sintered and simultaneously bonded to a sintered cemented carbide...
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WO/1997/029884A1 |
A high pressure/high temperature process is disclosed for making polycrystalline diamond or CBN compacts having chip control surfaces formed thereon. Making these chip control surfaces is accomplished by pre-forming the indentations or r...
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WO/1997/028909A1 |
A technique for removing loose powder from the interior surfaces of ceramic molds made using layer manufacturing processes, such as three-dimensional printing processes. The interior of a mold is filled with water which is boiled and the...
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WO/1997/022819A1 |
A unitary powder metal gear or sprocket (10) has a teeth region (16) which extends 2-5 mm below the tooth root diameter and a body region (14) radially inside of the teeth region (16). The teeth region (16) is pressed to a higher density...
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WO/1997/016274A1 |
Processes for providing enhanced thermal properties of tooling, particularly metal and metal/ceramic molds (8), made by solid free form fabrication techniques, such as the three-dimensional printing process, and the tooling made by these...
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WO/1997/012710A1 |
The object of the invention is to improve a method of producing large annular workpieces, in particular annular bands for wear-resistant pressure rollers, by means of a hot-isostatic pressing process such that even larger annular workpie...
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WO/1997/009161A1 |
With reference to the figure, an elongate hot-pressed insert (1) is of generally undulate W-shape in transverse cross section. Pairs of identical inserts are clamped together in use so as to define overlapping parallel bores (2, 3) for t...
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WO/1997/008358A1 |
The invention relates to a process for manufacturing a pore free powder metallurgical alloy article starting with a minor portion of Sn powder and a major portion of In2O3 powder and comprising the steps of: substantially uniformly distr...
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WO/1997/005980A1 |
A self-lubricating sintered sliding material exhibiting extremely superior anti-seizure properties and wear-resistance properties even under an uneven or high load and a method for manufacturing the same material. The self-lubricating si...
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WO/1997/005082A1 |
The invention relates to the field of structural ceramics and concerns the production of ceramic or powdered metal components, e.g. drills, screws, etc. The purpose of the invention is to provide an economical process for making a highly...
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WO/1997/001408A1 |
When producing a sinterable ceramic or metallic body (15), a tool is used which can be assembled from two or more tool parts (19, 24). A moulding space (F) corresponds to the shape of the body. One tool part (24) is produced using a wet ...
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WO/1996/040469A1 |
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separate, e.g., rod (3, 3') and cap (5, 5') forgings and coining or forging them toget...
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WO/1996/034991A1 |
This invention relates to an aluminium powder blend which can be used for the manufacture of sintered components. The powder is based on the precipitation hardenable 7000 series Al-Zn-Mg-Cu alloys with trace additions of lead or tin. The...
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WO/1996/033832A1 |
A process is disclosed for forming a pressed metal part in which a preform (122) is inserted into a pressed metal mold. The mold is then filled with powdered metal. The powdered metal and preform are compacted to create a compacted metal...
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WO/1996/022170A2 |
A method of constructing a fully dense metal part or a metal mold half for mating with another mold half to form a mold for casting multiple parts. Steps include placing a pattern in a tubular mold base, casting a ceramic member onto cri...
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WO/1996/021958A2 |
The proposed non-vaporising getter contains the following components: vanadium (V) - 20-35 wt.%; calcium (Ca) - 0.1-0.5 wt.%; and titanium (Ti) - the rest. The getter has a porosity of 25-65 % of its total volume. In order to obtain the ...
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WO/1996/020057A1 |
Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions exhibiting at least one property that differs are discussed. Preferably...
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WO/1996/019308A1 |
A process for production of a moulded ceramic and/or metallic body from a ductile material comprising one or more ceramic and/or metallic components, which material is fed into the pre-heated mould cavity (1) of a moulding tool. The moul...
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WO/1996/014973A1 |
A mold useful for injection molding, comprising: a porous network of metal and oxidized metal and a cured epoxy resin dispersed in the porous network. The mold can be prepared by a process comprising the sequential steps of (a) forming a...
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WO/1996/004087A1 |
A device for producing compacts having main cylindrical elements and helically-shaped secondary elements from a powdery material, in particular a metal powder, has a female mould (1), at least one upper punch (2) mounted to rotate around...
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WO/1995/035177A1 |
An improved battery plate (40) and a method of making for an electric storage battery (10). The battery plate comprises a plurality of metallic fibers (50, 52) of a single or plural diameters (d, D) randomly oriented and sintered to prov...
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WO/1995/032819A1 |
The invention relates to a method of manufacturing wire from a high alloy material in which thin-walled tubes of a ductile carbon steel filled with a powder of the high alloy material are placed in a can and powdered filler material is i...
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WO/1995/032048A1 |
A porous metal filter possessing enhanced anticorrosive properties is provided including sintered metal particles composed of an alloy composition of iron aluminide having a range in concentration corresponding to Fe3Al to FeAl phases an...
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WO/1995/030633A1 |
A gas generating substance is added to an aqueous dispersion containing refractory particles and a polymerisable monomer and the pressure and/or temperature are adjusted so that the substance generates the gas before the polymerisation g...
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WO/1995/027871A1 |
The invention relates to a metal fiber membrane (1) for gas burners comprising a sintered metal fiber web with a pattern of a number of consecutive quadrangular porous zones (2) with each a width D, a length L and a surface of at least 1...
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WO/1995/024286A1 |
A nozzle (4) for a fuel valve (1) for an internal combustion engine is manufactured by exposing an isotropic finely grained powder in a form having substantially the desired external nozzle shape to a pressure of at least 800 bar and a t...
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