Abstract: A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Al—Cu—Mg, Al—Mn, Al—Si, Al—Mg, Al—Mg—Si, Al—Zn, Al—Zn—Cu, Al—Zn—Mg, Al—Zn—Cr, Al—Zn—Zr, or Al—Sn—Li alloy, or a combination thereof, dispersed in the cellular nanomatrix.

Abstract: A powder metal compact is disclosed. The powder metal compact comprises a cellular nanomatrix comprising a metallic nanomatrix material. The powder metal compact also comprises a plurality of dispersed particles comprising a metallic particle core material dispersed in the cellular nanomatrix, the particle core material comprising a nanostructured material.

Abstract: A powder metal compact is disclosed. The powder metal compact includes a cellular nanomatrix comprising a nanomatrix material. The powder metal compact also includes a plurality of dispersed particles comprising a particle core material that comprises an Mg—Zr, Mg—Zn—Zr, Mg—Al—Zn—Mn, Mg—Zn—Cu—Mn or Mg—W alloy, or a combination thereof, dispersed in the cellular nanomatrix.

Abstract: Provided are a green compact from which a low-loss core can be formed, a method of manufacturing the green compact, and a core for a reactor using the green compact. Parts of outer circumferential surfaces of green compacts 41 and 42 are molded with an inner peripheral surface of a through hole 10hA of a die 10A, and the other parts are molded with an outer circumferential surface of a core rod 13A that is inserted and disposed in the through hole 10hA. A raw-material powder P, which is a coated soft magnetic powder, is fed into compacting spaces 31 and 32 and pressurized by using a lower punch 12 (first punch) and an upper punch 11 (second punch). Then, the green compacts 41 and 42 are removed from the compacting spaces 31 and 32 by moving the die 10A with respect to the green compacts 41 and 42 without moving the core rod 13A with respect to the green compacts 41 and 42.

Abstract: A powder metal compact is disclosed. The powder compact includes a substantially elongated cellular nanomatrix comprising a nanomatrix material. The powder compact also includes a plurality of substantially elongated dispersed particles comprising a particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the cellular nanomatrix. The powder compact further includes a bond layer extending throughout the cellular nanomatrix between the dispersed particles, wherein the cellular nanomatrix and the dispersed particles are substantially elongated in a predetermined direction.

Abstract: A downhole cutting tool includes a base including a first consolidated powder; and at least one cutting feature affixed to the base, the at least one cutting feature including a cutting material suspended in a second consolidated powder, wherein the base and the at least one cutting feature are both consolidated and bonded together simultaneously. Also included is a method of manufacturing a cutting tool.

Abstract: A system for making a material having domains with insulated boundaries is provided. The system includes a droplet spray subsystem configured to create molten alloy droplets and direct the molten alloy droplets to a surface, a gas subsystem configured to introduce one or more reactive gases to an area proximate in-flight droplets. The one or more reactive gases creates an insulation layer on the droplets in flight such that the droplets form a material having domains with insulated boundaries.

Abstract: A hard composite composition may comprise a binder and a polymodal blend of matrix powder. The polymodal blend of matrix powder may have at least one first local maxima at a particle size of about 0.5 nm to about 30 ?m, at least one second local maxima at a particle size of about 200 ?m to about 10 mm, and at least one local minima between a particle size of about 30 ?m to about 200 ?m that has a value that is less than the first local maxima.

Abstract: In one aspect, there are provided methods for producing porous metallic structures, wherein the methods involve the use of collagen fibrils on the nanometer scale as a “sacrificial” scaffold upon which metal particles are deposited. Also disclosed are structures comprising a porous metallic matrix having favorable strength, porosity, and density characteristics. Structures produced in accordance with the present disclosure are useful for, inter alia, the fabrication of devices such as filters, heat exchangers, sound absorbers, electrochemical cathodes, fuel cells, catalyst supports, fluid treatment units, lightweight structures and biomaterials.

Abstract: Hard particles for blending as a starting material in a sintered alloy contain 20 to 40 mass % of molybdenum, 0.5 to 1.0 mass % of carbon, 5 to 30 mass % of nickel, 1 to 10 mass % of manganese, 1 to 10 mass % of chromium, 5 to 30 mass % of cobalt, 0.05 to 2 mass % of yttrium, and the balance being inadvertent impurities and iron.

Abstract: A heat-resistant superalloy having chromium, aluminum, cobalt, titanium, and ruthenium added thereto as main components, and having a subcomponent(s) optionally added thereto, the remainder, excluding the main components and the subcomponent(s), comprising nickel and an impurity inevitably contained, wherein the amount of the chromium added is 2 to 25% by mass, the amount of the aluminum added is 0.2 to 7% by mass, the amount of the cobalt added is 19.5 to 55% by mass, the amount of the titanium added is [0.17×(% by mass for cobalt?23)+3] to [0.17×(% by mass for cobalt?20)+7] % by mass (with the proviso that the amount of the titanium added is 5.1% by mass or more), and the amount of the ruthenium added is 0.1 to 10% by mass.

Abstract: A semi-finished product is disclosed including fibrous materials, binders, 15 to 90% by volume metal fillers, and 0 to 15% by volume non-metal inorganic fillers. The total content of the fillers is not more than 90% by volume of the semi-finished product. The invention further relates to metal materials and processes for manufacturing the materials and semi-finished products and uses thereof.

Abstract: Iron-based metallurgical powders comprising vanadium are described, as well as compacted articles made thereof These articles have improved mechanical properties.

Abstract: A method of preparing tin (Sn) nanoparticles based on a bottom-up approach is provided. The method includes combining a first solution comprising Sn ions with a second solution comprising a reducing agent. After the combination, the Sn ions and the reducing agent undergo a reaction in which at least some of the Sn ions are reduced to Sn nanoparticles. The first solution comprises a tin salt dissolved in a solvent; the second solution comprises an alkali metal and naphthalene dissolved in a solvent; and the combined solution further comprises a capping agent that moderates a growth of aggregates of the Sn nanoparticles.

Abstract: A method of producing a reactive powder includes providing a bulk structure of reactive material comprising a first reactant and a second reactant, the bulk structure having a preselected average spacing between the first and the second reactants; and mechanically processing the bulk structure of reactive material to produce a plurality of particles from the bulk structure such that each of the plurality of particles comprises the first and second reactants having an average spacing that is substantially equal to the preselected average spacing of the bulk structure of reactive material. The first and second materials of the plurality of particles react with each other in an exothermic reaction upon being exposed to a threshold energy to initiate the exothermic reaction and remain substantially stable without reacting with each other prior to being exposed to the threshold energy.

Abstract: The invention relates to a method for producing a green compact, said green compact comprising at least two partial green compacts, each partial green compact being compacted and joined from at least one powdery material in one working cycle. Particularly, two, three, four or more than four partial green compacts can be compacted and joined in one working cycle.

Abstract: The present invention provides a powder magnetic core low in the loss and high in the saturation magnetic flux density and a method for manufacturing the same. More specifically, the present invention provides a powder magnetic core that comprises a soft magnetic metal powder having an average particle size (D50) of 0.5 to 5 ?m, a half width of diffraction peak in a <110> direction of ?-Fe as measured by X-ray powder diffraction of 0.2 to 5.0°, and an Fe content of 97.0% by mass or more, the core having an oxygen content of 2.0% by mass or more.

Abstract: Disclosed are pieces that are produced by sintering, which have well-differentiated surface finish areas including rough areas resulting from the sintering process, the roughness being determined by the size of grain used in sintering, and polished areas that have undergone a three-dimensional machining process. Also, dislosed is a method that, after obtaining a file containing a representation of the piece to be produced, comprises: selecting the parts to be raised; producing the piece by means of sintering; and subsequently subjecting the piece to automatic, semi-automatic or directed programming generation so that, by means of machining, the raised parts are reduced. Consequently, the resulting piece is economical in terms of costs and exhibits a very high degree of precision in the machined areas, a tolerance 9, and improved finish, texture and finishing in the sensitive areas of the piece.

Abstract: A power transmission part is made of a sintered material obtained by press molding and firing granulated powder obtained by granulating raw material powder having iron as a main component. The sintered material can thereby be increased in density by a powder press sintering method. A power transmission part of high strength and high rigidity can thereby be obtained.

Abstract: A method for producing a thin-walled structural component from a casting material. The casting material is supplied as a powder, and the powder is deposited on a support (1) by a kinetic cold gas spraying process so as to form the structural component (11, 11?). A structural component which is made of a casting material and in which the structure is formed from a plurality of particles (17) that are interlinked and deformed using a cold gas spraying process.

Abstract: The present invention is directed to a method of manufacture of metal or alloy powders that uses liquid phase reduction of a metal halide, or a mixture of metal halides, to produce a metal particle coated in salts produced as a reaction byproduct. The reaction conditions can be chosen to select a range of metal particle sizes, and the salt coating prevents oxidation (or reaction with other atmospheric gases) and permits a range of applications hitherto difficult to achieve using metal powders.

Abstract: The present invention relates to a method for manufacturing a sintered ferromolybdenum alloy, in which a mixed powder of a mill scale (a mixture of Fe, FeO and Fe2O3) as a ferrous raw material discharged from a hot rolling and forging process of the steel-making process and a molybdenum oxide powder as a molybdenum raw material is primarily reduced with a hydrogen gas at low temperature, and then is secondarily reduced with the hydrogen gas at high temperature and simultaneously is cooled in a hydrogen atmosphere to thereby obtain a ferromolybdenum alloy in the form of a powder, and subsequently the obtained ferromolybdenum alloy powder is mixed with wax (Kenolube P11) and the wax-containing mixture is compacted or pressure-molded, after which the molded product is heat-treated in a hydrogen gas atmosphere and then is cooled, thereby manufacturing a sintered ferromolybdenum alloy, and a sintered product manufactured by said method.

Abstract: A method for producing a metal article according to one embodiment may include: Providing a supply of a sodium/molybdenum composite metal powder; compacting the sodium/molybdenum composite metal powder under sufficient pressure to form a preformed article; placing the preformed article in a sealed container; raising the temperature of the sealed container to a temperature that is lower than a sintering temperature of molybdenum; and subjecting the sealed container to an isostatic pressure for a time sufficient to increase the density of the article to at least about 90% of theoretical density.

Abstract: An ultrasonic welding tool fabricated of powder metal material includes a body and a welding tip extending axially from the body to a working end. The powder metal material can be ferrous-based and admixed with additives, such as alumina, carbide, ferro-molybdenum, ferro-nickel, chrome or tribaloy. An exposed surface of the welding tip can comprise Fe3O4 oxides. The tool is compacted to the desired shape and sintered. The body can include a different second material compacted separately from the welding tip and then joined to the tip and sintered.

Abstract: A powder metal component is made of compacted and sintered powder metal particles such as chromium-containing ferrous-based metal and is porous. Following sintering, the pores are impregnated with relatively smaller particles of ceria and/or yttria. The component is then heat treated and the presence of the impregnated ceria and/or yttria serve as nucleation sites for the formation of desirable oxides, such as chromium oxide, on the surface. The impregnated particles that lie below the protective oxide layer remain available throughout the life of the component in the event the original oxide layer becomes worn or damaged, wherein a renewed protective oxide is formed in such regions due to the presence of the impregnated particles.

Abstract: A hydridable alloy of formula R1-x-yMgxMyNis-aBa wherein R is selected from the group consisting in rare earths, yttrium and a mixture thereof; M represents Zr and/or Ti; B is selected from the group consisting in Mn, Al, Co, Fe and a mixture thereof; 0.1<x<0.4; 0?y<0.1; 3<s<4.5 and 0?a<1; at least 5% of the volume of which consists of a stack of sequences of a pattern of the A2B4 type and of n patterns of the CaCu5 type randomly distributed along one direction, n being an integer comprised between 1 and 10 and representing the number of patterns of the CaCu5 type per pattern of the A2B4 type. A method for making a hydridable alloy comprising steps for compression and applying a current through a mixture comprising Mg2Ni and a compound comprising nickel and one or several elements selected from the group consisting in rare earths and yttrium.

Abstract: Disclosed herein is a sintered composition comprising iron; about 0.05 to about 1 wt % molybdenum; about 3 to about 4.5 wt % silicon; about 0.05 to about 0.5 wt % chromium; about 0.011 to about 0.015 wt % magnesium; all weight percents being based on the total weight of the composition; the composition being devoid of carbon except for trace amounts; and wherein the composition is sintered. Disclosed herein too is a method comprising blending a powdered composition that comprises iron; about 0.05 to about 1 wt % molybdenum; about 3 to about 4.5 wt % silicon; about 0.05 to about 0.5 wt % chromium; about 0.011 to about 0.015 wt % magnesium; all weight percents being based on the total weight of the composition; the composition being devoid of carbon except for trace amounts; compacting and sintering the composition.

Abstract: The disclosed method provides a way to fabricate a powder metal compact implementing a top fill through one or more of the upper tool members. The top fill step allows for pre-compaction chamber, defined at least in part by at least one of the upper tool members, to be filled with a powder metal after the upper tool member is initially lowered, but before compaction of the powder metal. The manner in which the pre-compaction chamber is filled allows for the formation of complex geometries in powder metal compacts that are not obtainable using conventional lower tool powder transfer motions and further minimizes or avoids unacceptable variations in powder fill to final part ratios across the powder metal compact.

Abstract: A method for producing a rare earth magnet material which allows efficient Dy or the like diffusion into an inside thereof. This method includes a preparation step of preparing a powder mixture of magnet powder including one or more rare earth elements including neodymium, boron, and the remainder being iron; and neodymium fluoride powder; a heating step of heating a compact of the powder mixture and causing oxygen around magnet powder particles to react with the fluoride powder, thereby obtaining a lump rare earth magnet material in which neodymium oxyfluoride is wholly distributed. The fluoride powder traps oxygen enclosed in the powder mixture and fixes the oxygen as stable NdOF. When Dy is diffused into this rare earth magnet material, Dy smoothly enters into its inside without being oxidized at grain boundaries. Consequently, coercivity of the entire rare earth magnet material can be efficiently increased without wasting scarce Dy.

Abstract: A bulk nanocomposite thermoelectric material including: a plurality of grains of a thermoelectric material; and a metal nanolayer on a boundary of the plurality of grains, wherein the metal nanolayer is crystalline, and a glass transition temperature and a crystallization temperature of the nanometal are lower than a melting point of the thermoelectric material.

Abstract: A method for manufacturing a shaped body, comprising creating a mixture of a metal powder and binding agent, compacting the mixture to form a green compact, heating the green compact to a debinding start temperature T1, debinding the green compact by controlled heating of the green compact from start temperature T1 to end temperature T2 at a heat-up rate R1, presintering the debindered green compact to the presinter end temperature TVS at a heat-up rate RHVS, cooling the green compact from the presinter end temperature TVS at a cool-down rate RKVS, whereby at least the heat-up rate RHVS, the presinter end temperature TVS, and the cool-down rate RKVS are tuned relative to each other in such a way that the presintered green compact forming a blank has a surface porosity of 16% to 22% after presintering, and machining and sintering of the blank to form the shaped body.

Abstract: An iron-based sintered sliding member that contains no free cementite in its structure and is excellent in tribological property such as friction and wear, and a method of manufacturing that iron-based sintered sliding member are provided. To iron powder as a main component, 3-20 mass % alloy powder, which comprises 4-6 mass % manganese, 3-5 mass % iron, and copper as a remaining component, and 1-5 mass % carbon powder are blended, and mixed to obtain powder mixture. Then, the powder mixture is filled in a mold and compacted to make a green compact of a desired shape. This green compact is sintered at a temperature of 1000-1100 degrees Celsius for 60 minutes in a heating furnace whose inside is adjusted to be a neutral or reducing atmosphere.

Abstract: It is described a manganese pellet production from non-calcinated manganese ore, comprising the following phases: (a) ore size preparation through ore classification by function of particle size, smaller or equal to 1 mm particles being maintained from the ore particle fraction process so as to have a smaller or equal to 1 mm size, as well as the comminution of these particles; (b) flux addition; (c) agglomerant addition; (d) pelletizing resulting in crude pellets; and (e) thermal processing through crude pellet drying, pre-heating and heating.

Abstract: This method for producing porous sintered aluminum includes: mixing aluminum powder with a sintering aid powder containing titanium to obtain a raw aluminum mixed powder; mixing the raw aluminum mixed powder with a water-soluble resin binder, water, and a plasticizer containing at least one selected from polyhydric alcohols, ethers, and esters to obtain a viscous composition; drying the viscous composition in a state where air bubbles are mixed therein to obtain a formed object prior to sintering; and heating the formed object prior to sintering in a non-oxidizing atmosphere, wherein when a temperature at which the raw aluminum mixed powder starts to melt is expressed as Tm (° C.), a temperature T (° C.) of the heating fulfills Tm?10 (° C.)?T?685 (° C.).

Abstract: Disclosed herein is a composite material comprising a metal and nanoparticles, in particular carbon nano tubes as well as a method of producing the same. A metal powder and the nanoparticles are processed by mechanical alloying, such as to form a composite comprising metal crystallites having an average size in the range of 1-100 nm, preferably 10 to 100 nm or in a range of more than 100 nm and up to 200 nm at least partly separated from each other by said nanoparticles.

Abstract: The use of powder metal components in a variator is disclosed. Traction fluid of various sorts may be used in the variators, not just high performance synthetics or application specific lubricants.

Abstract: The reinforced particulate aluminum metal matrix composite for brakes is used to form a brake component, such as a brake rotor, a brake coupler or the like. The composite is formed from an aluminum metal matrix reinforced with ceramic particulates. The ceramic particulates have a particulate diameter between about 0.1 and 1.0 micrometers and form greater than about 10% by volume of the reinforced particulate aluminum metal matrix composite.

Abstract: A production method for a sintered member includes preparing a raw powder, compacting the raw powder into a green compact having pores at the surface thereof, and sintering the green compact into a sintered compact. The production method also includes sealing the pores exposed at the surface of the sintered compact by at least one of plastically deforming and melting the surface of the sintered compact. The production method further includes forging the sintered compact by using a lubricant after the sealing.

Abstract: A process including: (a) forming a powder blend by mixing titanium powders, (b) consolidating the powder blend by compacting to provide a green compact, (c) heating the green compact thereby releasing absorbed water from the titanium powder, (d) forming ?-phase titanium and releasing atomic hydrogen from the hydrogenated titanium by heating the green compact in an atmosphere of hydrogen emitted by the hydrogenated titanium, (e) reducing surface oxides on particles of the titanium powder with atomic hydrogen released by heating of the green compact, (f) diffusion-controlled chemical homogenizing of the green compact and densification of the green compact by heating followed by holding resulting in complete or partial dehydrogenation to form a cleaned and refined compact, (g) heating the cleaned and refined green compact in vacuum thereby sintering titanium to form a sintered dense compact, and (h) cooling the sintered dense compact to form a sintered near-net shaped article.

Abstract: An R-T-B system sintered magnet is provided which achieves both a high residual magnetic flux density and a high coercive force. The R-T-B system sintered magnet comprises main-phase grains 1 each having a core-shell structure comprising an inner shell part 2 and an outer shell part 3 surrounding the inner shell part 2, wherein the concentration of the heavy rare earth element in the inner shell part 2 is lower by 10% or more than the concentration of the heavy rare earth element in the periphery of the outer shell part 3, and (L/r)ave falls within a range from 0.03 to 0.40 in the main-phase grains 1 each comprising the inner shell part 2 and the outer shell part 3, wherein L represents the shortest distance from the periphery of the main phase grain 1 to the inner shell part 2, r represents the equivalent diameter of the main phase grain 1, and (L/r)ave represents the average value of L/r for the main-phase grains 1 present in the sintered body and having the core-shell structure.

Abstract: A powder metal composite is disclosed. The powder metal composite includes a substantially-continuous, cellular nanomatrix comprising a nanomatrix material. The composite also includes a plurality of dispersed first particles each comprising a first particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the nanomatrix; a plurality of dispersed second particles intermixed with the dispersed first particles, each comprising a second particle core material that comprises a carbon nanoparticle; and a solid-state bond layer extending throughout the nanomatrix between the dispersed first and second particles. The nanomatrix powder metal composites are uniquely lightweight, high-strength materials that also provide uniquely selectable and controllable corrosion properties, including very rapid corrosion rates, useful for making a wide variety of degradable or disposable articles, including various downhole tools and components.

Abstract: Composite RE-TM permanent magnets fabricated by using powders and nanoflakes produced by surfactant-assisted, wet, high energy, ball milling, with or without prior dry, high energy, ball milling; where RE represents rare earth elements and TM represents transition metals and where the powders include Fe nanoparticles, Fe—Co nanoparticles, B2O3, mica, MoS2, CaF2 powders and combinations thereof.

Abstract: A metal article formed by compacting a sodium/molybdenum composite metal powder under sufficient pressure to form a preformed article; placing the preformed article in a sealed container; raising the temperature of the sealed container to a temperature that is lower than a sintering temperature of molybdenum; and subjecting the sealed container to an isostatic pressure for a time sufficient to increase the density of the metal article to at least about 90% of theoretical density.

Abstract: A method for producing a composite metal powder according to one embodiment of the invention may comprise: Providing a supply of molybdenum metal powder; providing a supply of a potassium compound; combining the molybdenum metal powder and the potassium compound with a liquid to form a slurry; feeding the slurry into a stream of hot gas; and recovering the composite metal powder.

Abstract: A sintered structure and method for forming it are disclosed. The method includes obtaining core-shell particles having a core material and a shell material, forming the particles into a powder compact, and annealing the powder compact at an annealing temperature. The shell material is a metal that diffuses faster than the core material at the annealing temperature and diffuses to the contacts between the core-shell particles during annealing to form sintered interfaces between the core-shell particles. The sintered structure can have discontinuous regions of shell material between the sintered interfaces. The core material can be a metal, semiconductor or ceramic. The core material can be copper and the shell material can be silver. The sintered interfaces can be almost purely shell material. The annealing temperature can be significantly lower than the temperature needed to form interfaces between particles of the core material without the shell material.

Abstract: There is disclosed a compound for powder metallurgy including a binder composition for powder metallurgy and a metal powder. The binder composition for powder metallurgy includes a hydrocarbon-based resin and wax, wherein the content of oxygen is 20 mass % or less. The content of the hydrocarbon-based resin in the compound for powder metallurgy is 1 to 2 times the content of the wax, by mass ratio. It is preferable that the binder composition further includes a copolymer formed through a copolymerization of a first monomer including a cyclic ether group with a second monomer.

Abstract: A method for producing an NdFeBCu magnet includes supplying an alloy melt having a composition that is represented by the general formula NdyFe100-x-y-zBzCuX, where x is between 1 and 3 inclusive, y is larger than 12 and at most 24, and z is larger than 6 and at most 12, onto a cooled roll to obtain a quenched ribbon as a ribbon shaped magnetic material.

Abstract: A sintered metal bearing is obtained by compression-molding of a raw-material powder containing at least a Cu powder, an SUS powder, and a pure Fe powder and thereafter sintering a compression-molded body at a predetermined temperature.

Abstract: A particle generator is able to generate pure particles for solid or liquid materials with melting points over several hundred degrees Celsius. The material is heated to generate the vapor in a small chamber. Heated nitrogen or some inert gas is used as the carry gas to bring the mixture into a dilution system. As the super saturation ratio of the material is large enough and over a critical value, particles are formed in the dilution system by homogenous nucleation, and grown in the same dilution system as well. The different size distributions and concentrations of the particles can be obtained by varying dilution parameters, such as residence time and dilution ratio.

Abstract: Iron-based powder metallurgical compositions including both iron-copper prealloy and copper powder are described. These compositions, when compacted and sintered, result in compacts having good dimensional consistency.