Abstract: The present invention relates to a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains a graphite powder and a carbon black, and in which a mixing ratio of the graphite powder to the carbon black is in the range of 25 to 85 parts by weight to 75 to 15 parts by weight; and a mixed powder for powder metallurgy containing an iron-base powder and a carbon supply component, in which the carbon supply component contains, as a main component, a carbon black having a dibutyl phthalate absorption of 60 mL/100 g or less and a nitrogen absorption specific surface area of 50 m2/g or less. The mixed powder for powder metallurgy of the invention is less in the dust generation and segregation of the carbon supply component. Additionally, when the mixed powder for powder metallurgy of the invention is used, a green compact and a sintered body excellent in the mechanical property can be produced.

Abstract: The invention concerns a stainless steel powder comprising at least 10% chromium by weight. The powder further comprises vanadium in an amount of at least 4 times the amount of carbon and nitrogen. Preferably the steel powder comprises 10-30% chromium, 0.1-1% vanadium, 0.5-1.5% silicon, at least 0.1% carbon and at least 0.07% nitrogen. The invention also concerns a powder metallurgical composition containing said steel powder, a process for preparing and a compacted and sintered part made of said composition.

Abstract: An object of the present invention is to provide nitrogen-containing metallic powder at high productivity, which powder contains a metal such as niobium or tantalum containing nitrogen uniformly, and enables production of an anode electrode that has high specific capacitance and low leakage current and that exhibits excellent reliability for a prolonged period of time. There is provided nitrogen-containing metallic powder which is a solid solution containing 50-20,000 ppm nitrogen, in which the metal that constitutes the metallic powder is niobium or tantalum. The nitrogen-containing metallic powder is produced through the process in which while a metallic compound is reduced with a reducing agent, a nitrogen-containing gas is introduced into a reaction system to thereby form metal, and nitrogen is simultaneously incorporated into metal.

Abstract: A metallurgical composition is provided for making compacted parts, comprising: (a) at least about 80 percent by weight of an iron or iron-based powder; (b) up to about 20 percent by weight of at least one alloying powder; (c) from about 0.05 to about 2 percent by weight of a binding agent comprising a C14-C30 fatty alcohol; and (d) from about 0.001 to about 0.2 percent by weight of a flow agent.

Abstract: The subject invention reveals a process for making hardened powder metal parts which comprises compacting a powder metal composition into a green preformed metal part and subsequently sintering said green metal part to produce the powder metal part at an elevated temperature and subsequently cooling the sintered part at a rate which is sufficient to insure the formation of a substantial amount of martensite, wherein the powder metal composition is comprised of copper powder, a nickel powder and a base iron powder wherein said composition contains from about 1 weight percent to about 5 weight percent of the total sum of said copper powder and said nickel powder and wherein the ratio of the nickel powder to the copper powder is within the range of 1:1 to 9:1, and wherein the balance of said composition constitutes iron.

Abstract: In a hydrogen-containing tantalum powder of the present invention, a value obtained by dividing the hydrogen content (ppm) by the specific surface area (m2/g) is in the range of 10 to 100. This tantalum powder has a large specific surface area, and when the tantalum powder is used as an anode of a solid electrolyte capacitor, a solid electrolyte capacitor having a large capacitance and a low leakage current can be obtained.

Abstract: A process for treating particulate material containing heavy metal generated during a manufacturing process is disclosed. The process includes providing particulate material containing heavy metal within an enclosed area and mixing an additive of calcium silicate forming material with the particulate material in the enclosed area to create an additive-particulate material. The additive-particulate material can be passed into a waste collection device located downstream of the enclosed area. The calcium silicate forming material can be provided as particles with a particle size of minus 50 to plus 325 mesh. An additional aspect of the invention is an additive for use in such a process for treating metallic oxide impregnated dust, which has a particle size of plus 325 mesh and consists essentially of calcium silicate forming material.

Abstract: The invention relates to a process for producing capacitors based on niobium suboxide, and having an insulator layer of niobium pentoxide. Also described is a powder mixture suitable for production of capacitors. Pressed bodies produced from the powder mixture, and capacitors having specific properties are also disclosed.

Abstract: The present invention relates the manufacture of metal powders, non-oxidic ceramic powders and reduced metal oxide powders using an improved flame spray pyrolysis (“FSP”) process. The invention further relates to an apparatus specifically adapted to said process, to powders/naoncomposites obtained by said process and to the use of said powders/nanocompsites.

Abstract: In an ultrafine metal powder slurry containing an organic solvent, a surfactant, and an ultrafine metal powder, the surfactant is oleoyl sarcosine, the content of the ultrafine metal powder in the ultrafine metal powder slurry is 70 to 95 percent by mass, and more than 0.05 to less than 2.0 parts by mass of the surfactant is contained relative to 100 parts by mass of the ultrafine metal powder. By the above slurry, reduction in labor and treatment time can be realized in a conductive paste forming process. In addition, since aggregation of particles of the ultrafine metal powder is prevented, an ultrafine metal powder slurry can be provided having superior dispersibility and dry film density.

Abstract: A thermal spraying powder contains 30 to 50% by mass of chromium carbide with the remainder being an alloy containing chromium, aluminum, yttrium, and at least one of cobalt and nickel. The thermal spraying powder has an average particle size of 20 to 60 ?m. The thermal spraying powder may contain 20% by mass or less of yttrium oxide in place of a part of the alloy. A thermal spray coating obtained by thermal spraying of the thermal spraying powder, particularly, a thermal spray coating obtained by high-velocity flame spraying of the thermal spraying powder is suitable for the purpose of a hearth roll.

Abstract: A conductive composition for coating a semiconductor wafer comprises conductive filler that has an average particle size of less than 2 microns and a maximum particle size of less than 10 microns, a first resin that has a softening point between 80-260° C., solvent, curing agent, and a second resin, wherein at room temperature the first resin is substantially soluble in the solvent.

Abstract: The present invention relates to an expansive cell composition for an electric rock destruction. The expansive cell composition is fabricated using metallic salt that is oxidation agent, metallic powder, and hydrocarbon compound. The composition is uniformly mixed at a certain composition ratio so that the composition is stably expanded by a high temperature heat and impact wave energy generated when a high current is fast discharged with respect to a metallic wire. A hybrid-oxidation and combustion reaction is obtained, in which a hybrid-oxidation and combustion reaction is performed, in which a flame oxidation reaction of metallic salt and metallic powder and a combustion oxidation reaction of a hydrocarbon compound by the flame oxidation reaction are mixed. The rocks are destructed by generating a vapor expansion force matching with a fracture ability class of rocks. Low noise and vibration are obtained when destructing rocks, and broken pieces of rocks do not fly away.

Abstract: Novel powders or particles are formed by associating them with relatively small proportions of hydrolysable liquid material. The resulting particle/liquid mass is placed in a mold and sintered under conditions of heat and pressure that enables at least some of the hydrolysable liquid to react within the sintered mass. The sintered mass displays a controllable range of properties such as increased density, increased tensile strength, and improved natural polish finish. The hydrolysable liquid may partially hydrolyze and/or react with the powders and particles, but the liquid is not completely (not 100%) reduced to an inorganic oxide prior to introduction to the mold and performance of the sintering process.

Abstract: The invention concerns a powder metal composition comprising an iron based powder and a lubricant and/or binder comprising at least one secondary amide of the general formula: R1—NH—CO—R2, wherein R1 and R2 are the same or different, straight or branched, saturated or unsaturated aliphatic hydrocarbon groups. The invention further concerns a method of making green bodies of the powder metal composition according to the invention, a method of producing a bonded iron-based powder composition, as well as the use of the at least one secondary amide as a lubricating and/or binding agent for iron based powders and the use as a die wall lubricant.

Abstract: A material mixture is produced having a cobalt-based alloy as the predominant component and an additional component of at least TiOx. The material mixture may be formed into a sputter target by hot pressing.

Abstract: The invention concerns a powder metallurgical composition comprising a major amount of an iron-based metal powder and a minor amount of carbon black. The amount of carbon black is between 0.001 and 0.2% by weight, preferably between 0.01 to 0.1% by weight.

Abstract: A method of making cemented carbide at which powders forming hard constituents and powders forming binder phase are wet milled together with a pressing agent is disclosed. The slurry is dried, preferably by spray drying, compacted into bodies of desired shape and sintered. A cemented carbide powder with a reduced compacting pressure at a predetermined weighing in of 18% shrinkage can be obtained by using from about 1 to about 3 wt-% pressing agent with the following composition: less than about 90 wt-% PEG and greater than about 10 wt-% of long chain C?20 fatty acids, their esters and salts, in particular, erucic acid and/or behenic acid. The invention also relates to a cemented carbide powder with low compaction pressure.

Abstract: A powder metallurgical composition for making compacted parts is provided. Such composition comprises iron or an iron based powder, and a binder comprising a drying oil and a drying agent. In a preferred embodiment graphite also is present.

Abstract: Mo of 0.05 to 1.0% by mass is adhered to the surfaces of an iron-based powder containing Mn of 0.5% by mass or less and Mo of 0.2 to 1.5% by mass as prealloyed elements by diffusion bonding, whereby an alloy steel powder is formed. Furthermore, a Ni powder of 0.2 to 5% by mass and/or a Cu powder of 0.2 to 3% by mass are added to the alloy steel powder, whereby a mixed powder for powder metallurgy is formed. The mixed powder for powder metallurgy according to the present invention enables production of sintered bodies having high density as well as superior tensile strength and rotating bending fatigue strength.

Abstract: A method of producing an assembled object from a plurality of layers is provided. The method comprises generating a layer of a sintered mass of a sinterable powder on a surface and transferring the layer to an object to be assembled. The sinterable powder may be applied to a surface and at least part of the sinterable powder is fused with a radiant energy source to form a layer of sintered powder. The layer of sintered powder is then transferred to the object to be assembled, the object comprising a plurality of layers of sintered powder fused together. A sinterable powder composition is also provided. The sintered powder comprises at least one thermoplastic polymer and a light absorber. Other materials such as fillers, additives, and flow agents may also be added to the composition. An object comprised of a plurality of layers wherein each layer is a sintered mass of a sinterable powder and each layer is fused at least in part to another layer is provided.

Abstract: An improved sintered material and product. A nanometer size reinforcement powder is mixed with a micron size titanium or titanium alloy powder. After the reinforcement powder is generally uniformly dispersed, the powder mixture is compacted and sintered, causing the nano reinforcement to react with the titanium or titanium alloy, producing a composite material containing nano and micron size precipitates that are uniformly distributed throughout the material.

Abstract: Particulate lubricants are disclosed which comprise discrete particles of a fatty monoamide, especially oleamide and discrete particles of at least one other powder metallurgy lubricant, which provide a synergistic free-flowing composition; there are also provided novel compositions of matter for forming sintered metal components comprising a mixture of sinterable powdered metal and the particulate lubricants.

Abstract: This invention relates to a composition of matter comprising associated predominantly silver nanoparticles, and a method of making the nanoparticles. It further relates to articles comprising the nanoparticles.

Abstract: Multiphase polymeric binders for binder assisted forming of sinterable powder bodies are formulated to demonstrate improved rheological properties in the form of newtonion or near newtonion flow behavior thereby reducing dependence of binder viscosity on shear by tailoring the molecular weight and molecular weight distribution of the polymeric binder phases and the resulting polymer admixtures of the invention demonstrate shear rate independent behavior. Reduction of interfacial tension between binder phases by introduction of at least one macromolecule with separate segments selected to be compatible with the individual phases of the binder further increases processing performance as does use of polymer macromolecules having attributes that allow them to act as surface active materials at the interface of the sinterable powder and the multiphase binder composition. Predispersion of the surface active materials in the powder is facilitated by emulsification thereof in water prior to admixture with the powder.

Abstract: Copper metal powders, methods for producing copper metal powders and products incorporating the powders. The copper metal powders have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the metal particles in a continuous manner.

Abstract: An iron-based mixed powder for powder metallurgy having improved machinability, without degrading the mechanical property of a sintered body made by compacting the iron-based mixed power. The iron-based mixed powder comprises a mixture of an iron-based powder, a powder for an alloy, a powder for machinability improvement, and a lubricant. The powder for machinability improvement comprises a manganese sulfide powder, and at least one selected from the group consisting of a calcium phosphate powder and a hydroxy apatite powder. Alternatively the powder for machinability improvement has an average particle diameter of 1 to 60 micrometers and comprise manganese sulfide powder and calcium fluoride powder.

Abstract: The present invention concerns a powder metal composition for producing powder metal components comprising a Co-based pre-alloyed powder, with irregularly shaped particles comprising at least 15% by weight Cr and less than 0.3% by weight C, admixed with graphite. The invention also concerns a method for producing PM components by pressing of articles to shape from the powder metal composition according to the invention and sintering them.

Abstract: Metallurgical powder compositions are provided that include calcium aluminate additives, i.e., calcium aluminate or calcium aluminate containing powders, to enhance the machinability and durability of compacted and sintered parts made therefrom. The compositions generally contain a metal-based powder, such as for example, an iron-based or nickel-based powder, that constitutes the major portion of the composition. Calcium aluminate additives are combined with the metal based powder by, for example, admixing or bonding. Optionally, common alloying powders, lubricants, binding agents, and other powder metallurgy additives can be combined with the metallurgical powder composition. The metallurgical powder composition is used by compacting it in a die cavity to produce a “green” compact that may then be sintered, preferably at relatively high temperatures.

Abstract: The invention relates to an iron based material for coating of surfaces which comprises a binding phase in the form of a corrosion dense alloy which contains at least 50% Fe, 12-30% Cr, maximally 5% Mn, 0-40% Ni, preferably 6-20% Ni and 0-7% Mo and 0-1% N and 6-20% Si, all stated as weight percent, which addition of Si lowers the liquidus temperature, that is the temperature at which the binding phase is completely melted. The invention also aims at products of metal coated with the iron based material mentioned above.

Abstract: A thermal spray powder includes cermet particles. Each cermet particle includes tungsten carbide particles having a mean primary particle size of 3 to 9 ?m and metal particles or ceramic particles containing chrome. The mean particle size of the cermet particles is preferably from 2 to 50 ?m and the compression strength of each cermet particle is preferably from 400 to 900 MPa. Such a thermal spray powder enables the formation of a thermal sprayed coating which has both excellent cavitation erosion resistance and slurry erosion resistance.

Abstract: The present invention provides a lubricant system in the pressing of powders to form a part. The lubricant system is a solid at ambient conditions. However, upon application of pressure during the pressing of the metal parts, the lubricant system forms a liquid phase along the walls of cavity in which the powder is being pressed. The lubricant system may also be used in connection with a polar powder thereby providing certain beneficial results.

Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch particles smaller than the average metal particle, and optionally, micronized cellulose fibers in so small an amount that the modified lubricant is present in an amount less than 2% by weight of the mixture. The Hall apparent density and the Hall flow rate of a powder metal mixture made with the modified lubricant of starch or (starch+fibers) remains within the ranges deemed desirable for production of compacted powder metal parts. Using the modified lubricant in lieu of the conventional lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.

Abstract: A three-dimensional object of a desired shape is made by irradiating an optical beam on a metal powder layer to form a sintered layer and by laminating such sintered layer one above another. A metal powder composition for use in making such a three-dimensional object includes an iron-based powder material, a nickel and/or nickel alloy powder material, a copper and/or copper alloy powder material, and a graphite powder material. The graphite powder material acts to enhance the wettability during melting and to reduce microcracks during solidification.

Abstract: The invention concerns an improved segregation-resistant and dust-resistant metallurgical composition for making compacted parts, comprising at least about 80 percent by weight of an iron or iron-based powder; at least one alloying powder; and (c) about 0.05 to about 2 percent by weight of a binding/lubricating combination of polyethylene wax and ethylene bis-stearamide, the polyethylene wax having a weight average molecular weight below about 1000 and a melting point below that of ethylene bis-stearamide, and being present in amount between 10 and 90% by weight of the binding/lubricating combination.

Abstract: The present invention concerns a metal powder composition for the powder metal industry, wherein the metal powder is selected from the group consisting of an atomized iron-based powder or a sponge iron powder, and a lubricant composition comprising glyceryl stearate.

Abstract: A semiconductor device (10) includes a heat source (12), a heat-dissipating component (13) for dissipating heat generated by the heat source, and thermal interface material (14) filled in spaces formed between the heat source and the heat-dissipating component. The thermal interface material includes 100 parts by weight of alkenyl groups-containing organopolysiloxane, and Si—H groups-containing compound selected from the group consisting of organo-hydrogenpolysiloxane and polyorganohydrogensiloxane, and 800 to 1200 parts by weight of fillers consisting of aluminum powder having a mean particle size of 0.1 to 1 um and zinc oxide powder having a mean particle size of 1 to 5 um in a weight ratio of from 1/1 to 10/1 .

Abstract: The invention concerns a powder composition including an iron or iron based powder and a lubricating amount of an alkylalkoxy or polyetheralkoxy silane, wherein the alkyl or polyether group has between 8 and 30 carbon atoms and the alkoxi group includes 1-3 carbon atoms.

Abstract: A superfine material made by incorporation of an inorganic polymer precursor of a grain growth inhibitor into intermediates useful for the production of superfine materials. The precursor/nanostructured material composite is optionally heat treated at a temperature below the grain growth temperature of the superfine material in order to more effectively disperse the precursor. The composites are then heat treated at a temperature effective to decompose the precursor and to form superfine materials having grain growth inhibitors uniformly distributed at the grain boundaries. Synthesis of the inorganic polymer solution comprises forming an inorganic polymer from a solution of metal salts, filtering the polymer, and drying. Alloying additives as well as grain growth inhibitors may be incorporated into the superfine materials.

Abstract: Provided is metallic powder for powder metallurgy having iron as its principal component and containing indium soap, or metallic powder for powder metallurgy further comprising at least one type selected among bismuth soap, nickel soap, cobalt soap, copper soap, manganese soap and aluminum soap in such indium soap. Thereby obtained is metallic powder for powder metallurgy capable of easily improving the rustproof effect without having to hardly change the conventional process.

Abstract: A niobium powder for capacitors, which contains niobium monoxide crystal or hexaniobium monoxide crystal; a sintered body thereof; and a capacitor fabricated from the sintered body as one part electrode, a dielectric material formed on the surface of the sintered body, and another part electrode provided on the dielectric material.

Abstract: A niobium or tantalum powder of the present invention comprises aggregates in which primary particles of niobium or tantalum are aggregated, and have a pore distribution having a peak in the range from 1 to 20 ?m as measured by mercury porosimetry. That is, the niobium or tantalum powder of the present invention comprises aggregates having large pores, which connect with vacancies between the primary particles and facilitate the permeation of an electrolyte over the entirety of the inside of each aggregate. Accordingly, a solid electrolytic capacitor comprising an anode electrode made of the niobium or tantalum powder has high capacity and also a low ESR.

Abstract: The present invention provides a composition for use in pressed powder metallurgy. The composition includes a plurality of substantially dry, discrete agglomerates, a portion of which include a first metal particle adhered to a second metal particle by a binder that includes a polysaccharide. The composition can be used to form green compacts that exhibit excellent green strength and high density. The present invention also provides a process for the preparation of the composition, a method of forming a metal part using the composition and metal parts formed according to the method.

Abstract: A basket has a lattice-like section for accommodating individual used nuclear fuel in predetermined positions in a cask. The basket is made from aluminum composite material having good neutron absorption ability, excellent mechanical property and workability. The aluminum composite material is made by having, in an Al or Al alloy base phase, B or B compound with a neutron absorption ability and an additive element, e.g. Zr or Ti, for giving a high strength property, and subjecting to a sintering under pressure.

Abstract: A composition for use with alloys including extra-fine nickel powder dispersed with a hydrophobic inorganic dispersant which is preferably high-purity silica treated with hexamethyldisilazane (fumed silica). The composition breaks and prevents the agglomeration of the nickel powder, thereby preventing weaknesses in alloys, like steel for example, formed with the nickel powder. A method for making an alloy with the composition includes mixing the nickel powder with other metals and/or nonmetals and the hydrophobic fumed silica to form an alloy blend, pressing the alloy blend, and sintering the alloy blend.

Abstract: An object of the present invention is to provide a low-alloyed steel powder for sintering that can yield a sintered compact with high density and uniform characteristics, and to provide a sintered compact having such characteristics. The present invention is a raw powder for sintering, comprising Fe as its primary component and also comprising 0.8 wt % or less of C, 0.05 to 1.0 wt % of Si, 1.0 wt % or less of Mn, and 1.0 to 10.0 wt % or less of Ni, wherein the mean grain size of the raw powder for sintering is 8.5 ?m or less; and is also a granulated powder for sintering obtained by granulating the raw powder for sintering by means of a binder.

Abstract: A powder material for forming an abradable coating, the material comprising a metal powder based for the most part on aluminum and containing manganese or calcium. The material is applicable to seals of a turbomachine.

Abstract: Metallurgical powder compositions of the present invention include an iron based powder combined with a master alloy powder, as a mechanical property enhancing powder. The addition of master alloy powders has been found to enhance the mechanical properties of the final, sintered, compacted parts made from metallurgical powder compositions, especially at low sintering temperatures. Metallurgical powder compositions include at least about 80 weight percent of an iron-based metallurgical powder and from about 0.10 to about 20 weight percent of a master alloy powder. Master alloy powders include iron and from about 1.0 to about 40 weight percent chromium, and from about 1.0 to about 35 weight percent silicon, based on the weight of the master alloy powder.

Abstract: A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with micronized cellulose fibers in an amount less than 2% by weight of the mixture. The addition of fibers with the lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.

Abstract: Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature, such as not greater than about 400° C.