Abstract: A method is disclosed for producing an energetic metastable nano-composite material. Under pre-selected milling conditions a mixture of powdered components are reactively milled. These components will spontaneously react at a known duration of the pre-selected milling conditions. The milling is stopped at a time at which the components have been compositionally homogenized to produce nanocomposite powder, but prior to said known duration, and thereby before the spontaneous reaction occurs. The milled powder is recovered as a highly reactive nanostructured composite for subsequent use by controllably initiating destabilization thereof.

Abstract: A method for pretreating a sintering material using as a material at least two types of iron ore containing coarse grains and fine powder, using a first granulator to make the fine powder stick to coarse grains forming core grains so as to produce S-type granules, and using a second granulator to granulate only fine powder or mainly fine powder to produce P-type granules, which method producing the S-type granules by adjusting an amount of fine powder supplied into said first granulator so that the average stuck thickness of fine powder to the core grains becomes 50 to 300 ?m and supplying the remaining fine powder not supplied to said first granulator to the second granulator.

Abstract: A method for preparing a nano-sized metal powder feedstock comprises the steps of preparing a nano-sized metal powder, mixing the metal powder with a solution of an organic binder in a solvent, and wet-milling the mixture so that aggregates of the metal powder are uniformly formed. Further disclosed is a method for producing a sintered body using the feedstock.

Abstract: A method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and rubbing the metal element to make nanoparticles. Another method for making nanoparticles includes the steps of dipping a metal element in a solution that contains metallic ions or ions with a metal, wherein the metal element has a lower electronegativity or redox potential than that of the metal in the ions, and applying sonic energy to at least one of the metal element and solution. A further method for making copper nanoparticles includes the step of adding ascorbic acid to a copper salt solution.

Abstract: A hydrogen storage system is described that can fabricated under ambient atmospheric conditions and humidity. The hydrogen storage system includes hydrogen-absorbing alloy particles, such as ABx-type alloys, for example LaNi4.7Al0.3, AB/A2B-type alloys, for example Mg2Ni, and AB2-type alloys, and group VIII transition metal particles, such as Pd, Pt, Ni, Ru, and/or Re, that are mechanically alloyed. The mechanically alloyed particles are stable and retain their hydrogen-absorbing efficiency even after prolonged exposure to air and water. Binders and solvent can be added to produce low-viscosity inks. The hydrogen storage system can be used with fuel cells that can be microfabricated and optionally be integrated with electronic devices.

Abstract: The invention relates to a method of producing granules made of high purity metal or metal alloy, in particular based on chromium, the method being characterized in that it comprises the steps consisting in: preparing a metal or a metal alloy having non-metallic inclusions essentially comprising oxides of the base metal; pelletizing the metal or the alloy with a reducing agent in order to form the pellets or tablets; treating the pellets or tablets in a vacuum in order to enable the reducing agent to react on the inclusions without substantial sublimation of the metal or the metals of the alloy; and eliminating a surface layer from the pellets or tablets. The invention is applicable to manufacturing mechanical parts out of superalloys.

Abstract: A method for preparing ultra-fine, submicron grain titanium or titanium-alloy articles (78) used for joining or assembling of detail components. Coarse-grained titanium or titanium-alloy materials (52) are severely mechanically deformed using cryogenic milling into an ultra-fine, submicron grain powder, degassed and consolidated under controlled pressure and temperature. The resulting fasteners, articles, or components manufactured from such material have improved material performance characteristics associated with this ultra-fine, submicron grain material structure.

Abstract: The present invention relates to a method for grain refining of steel. A grain refining alloy having a composition FeXY where X is one or more elements selected from the group consisting of Cr, Mn, Si, Ni, and Mo and where Y is one or more oxide and/or sulphide and or nitride and/or carbide forming elements selected from the group consisting of Ce, La, Nd, Pr, Ti, Al, Zr, Ca, Ba, Sr, Mg, C and N where X is between 0.001 and 99% by weight based on the weight of the alloy and where Y is between 0.001 and 50% by weight of the alloy, said alloy additionally containing between 0.001 and 2% by weight of oxygen and/or between 0.001 and 2% by weight of sulphur, said alloy containing at least 103 inclusion particles per mm3 consisting of oxides and/or sulphides and/or carbides and/or nitrides of one or more of the Y elements and/or one or more of the X elements Cr, Mn and Si in addition to Fe, said inclusion particles having a mean diameter of less than 10 ?m, is added to molten steel in an amount of between 0.

Abstract: The invention concerns a method for preparing a nanocomposite based on magnesium and another element or compound known to absorb hydrogen and hardly miscible when ground with magnesium or its hydride, such as vanadium, titanium or niobium. The method is characterised in that it consists in submitting magnesium or a compound based on magnesium known to absorb hydrogen to hydrogenation to obtain the corresponding hydride in powder form. Said resulting powder hydride is then mixed with the other element or compound or a hydride of said other element or compound and the resulting mixture is subjected to intense mechanical grinding until the corresponding nanocomposite is obtained in the form of a hydride. Finally, if necessary, the resulting nanocomposite is subjected to hydrogen desorption.

Abstract: Lead-free solder metal powder material including two or more metals capable of forming an intermetallic compound and having an unreacted phase and an amorphous phase. Further, a lead-free solder paste is prepared by mixing the powder material with a soldering flux. The powder material is preferably formed using a mechanical milling process.

Abstract: A niobium hydride or niobium hydride alloy is ground at a temperature of ?200 to 30° C. in the presence of a dispersion medium to obtain a niobium powder for capacitors, having a low oxygen content, the niobium powder for capacitors is granulated to obtain a niobium granulated product for capacitors, having an average particle size of 10 to 500 ?m, the niobium powder or granulated powder for capacitors is sintered to obtain a sintered body, and a capacitor is fabricated by forming a dielectric material on the surface of the sintered body and providing another part electrode on the dielectric material, whereby a capacitor having good LC characteristics and less dispersed in the LC characteristics is obtained.

Abstract: The invention concerns a silicon powder for making alkyl- or aryl-halogenosilanes, with particle-size distribution less than 350 ?m, and containing less than 3% and preferably less than 2% of particles having a size less than 5 ?m. Said powder enables to improve efficiency of synthesis reaction.

Abstract: The manufacture of pure, fine spherical powders has always been a problem for many materials, particularly for high-melting and highly reactive materials such as titanium, tantalum, vanadium and zirconium. The present invention provides a process and apparatus for producing such powders by rapidly heating course powders containing a gas or gases to near or above their melting point, whereby the contained gas erupts explosively to form many fine particles of the host material. The fine particles are typically, but not necessarily spheroidal, depending upon the process conditions at the time of eruption and immediately thereafter. Methods are described for producing, collecting, handling, storing and passivating said fine powders.

Abstract: The present invention relates to a method of producing W—Cu based composite powder, which is used in heat-sink materials for high-power integrated circuits, electric contact materials, etc, and to a method of producing a W—Cu based sintered alloy by using the composite powder. The method of producing tungsten-copper based composite powder includes first preparing composite oxide powder by dissolving ammonium metatungstate, [(NH4)6(H2W12O40).

Abstract: Disclosed is a method of forming a W—Cu composite powder having a Cu particle surrounded by tungsten by mixing and pulverizing tungsten oxide powder and copper oxide powder using turbular mixing or ball milling, reducing the Cu powder firstly at 200˜400° C. under a hydrogen atmosphere or a reducing gas environment including hydrogen, generating W nuclei on the reduced Cu powder at 500˜700° C., and growing the generated W nuclei at 750˜1080° C. as well as a use of the same for the use of powder injection molding.

Abstract: The invention relates to a process for the production of metallic and metal-ceramic composite components by powder injection molding of a system comprising a metal composite powder, a binder and optionally a ceramic component, where the metal composite powder used is mixed with a protecting liquid in an inert atmosphere before the mixing with the binder. The invention furthermore relates to molybdenum/copper and tungsten/copper composite powders which have a primary metal particle size of predominantly <2 ?m, an oxygen content of <0.8% by weight and optionally a ceramic component, to the use of these composite powders for the production of composite components by powder injection molding, and to a process for the preparation of composite powders in which oxides of molybdenum or tungsten and of copper are mixed, dry-ground and reduced using hydrogen at a temperature of from 800 to 1050° C., and a ceramic component is optionally admixed with the resultant metal composite powder.

Abstract: A process for manufacturing alloy powder with dual consumable rotary electrodes arc melting is suitable for manufacturing pure and low-surface-area powder of metal, active metals and their alloys. In the process, rotary electrode and tungsten electrode adopted by conventional rotary electrode and arc process for manufacturing powder are respectively replaced with a rotary or anodic electrode containing a first metal and a feed or cathodic electrode containing a second metal. An inert gas is supplied into equipment for implementing the process to serve as a protective atmosphere and stabilize generated electric arc. The cathodic electrode melts under the high temperature of the arc at a cathodic spot, and droplets of the molten cathodic or second metal are sprayed toward the anodic electrode to mix with molten anodic or first metal and thrown-out by a centrifugal force of the rotary electrode to produce round-shaped alloy powder containing the first and the second metal.

Abstract: When a chromium-iron-based alloy, preferably a chromium-iron-based alloy having a chromium content of about 60 to about 95 mass % is subjected to heat treatment at about 500 to about 1,300° C., and subsequently to grinding treatment by use of an impact mill, grindability of the chromium-iron-based alloy is improved, and running cost can be reduced. In addition, the resultant powdery thermal spraying material exhibits stable fluidity during spray coating, and thus a uniform coating can be formed.

Abstract: Secondary agglomerates of magnetic metal particles for magnetic recording, have a sodium content of not more than 20 ppm and a calcium content of not more than 40 ppm, an average particle diameter of 300 to 800 &mgr;m and an upper limit of particle diameters of 2,000 &mgr;m, and comprise magnetic metal primary particles having an average major axis diameter of 0.05 to 0.25 &mgr;m.

Abstract: The invention relates to a process for producing a corrosion-resistant blasting agent (>60 HRC) with sharp edges based on an Fe—Cr—C alloy. A granulate consisting of an iron-chromium-carbon alloy is hardened in said process to >60 HRC by subjecting it to a heat treatment at above 900° Celsius under a reducing atmosphere. An oxide-free, hard material is obtained in this way that can be crushed into grains with sharp edges. The result is a blasting agent with excellent properties for the surface treatment of workpieces consisting of corrosion-resistant materials such as, for example stainless steel, nonferrous metals and natural stone.

Abstract: Methods for making hydrogen storage tanks may include disposing a substantially solid block of hydrogen-absorbing alloy within an activation vessel. Hydrogen gas may then be introduced into the activation vessel under conditions that will cause the hydrogen-absorbing alloy to absorb hydrogen and crack or break apart. Preferably, a substantially powdered hydrogen-absorbing alloy is formed thereby. Thereafter, the substantially powdered hydrogen-absorbing alloy can be transferred from the activation vessel to a hydrogen storage tank without substantially exposing the powered hydrogen-absorbing alloy to oxygen. The hydrogen-absorbing alloy is preferably ingot-shaped when introduced into the activation vessel. Further, the substantially powdered hydrogen-absorbing alloy is preferably produced by continuously breaking the ingot-shaped hydrogen-absorbing alloy within the activation vessel due to volume expansion caused by the hydrogen-absorbing alloy having absorbed hydrogen.

Abstract: Various aspects of the present invention provides a nanocrystalline powder suitable for storing hydrogen and a method of producing such a powder. One embodiment provides a nanocrystalline powder containing crystals of an aluminum alloy selected from the group consisting of NaAlx, LiAlx, and MgAl2x, wherein x is between 0.9 and 1.1, desirably 0.95-1.05, preferably about 1. The nanocrystalline powder also desirably includes an intercalated catalyst selected from the group consisting of C, Ti, Pt, Pd, V, Zr, and combinations of two or more of those materials.

Abstract: High strength aluminum alloy powders, extrusions, and forgings are provided in which the aluminum alloys exhibit high strength at atmospheric temperatures and maintain high strength and ductility at extremely low temperatures. The alloy is produced by blending about 89 atomic % to 99 atomic % aluminum, 1 atomic % to 11 atomic % of a secondary metal selected from the group consisting of magnesium, lithium, silicon, titanium, zirconium, and combinations thereof, and up to about 10 atomic % of a tertiary metal selected from the group consisting of Be, Ca, Sr, Ba, Ra, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, W, and combinations thereof. The alloy is produced by nanostructure material synthesis, such as cryomilling, in the absence of refractory dispersoids. The synthesized alloy is then canned, degassed, consolidated, extruded, and optionally forged into a solid metallic component. Grain size within the alloy is less than 0.5 &mgr;m, and alloys with grain size less than 0.

Abstract: To produce a hydrogen absorbing alloy powder, a starting powder and a plurality of balls are thrown into a container of a ball mill, and then, the inside of the container is maintained in a hydrogen atmosphere to conduct a mechanical alloying.

Abstract: The invention relates to sintered particles for use in wear applications and to a process for producing the sintered particles. The particles are of substantially spheroidal shape, have a grain size of 20 to 180 &mgr;m and have a predominantly closed porosity or are free of pores. The process for producing such particles starts from a powder material with a partially porous internal structure, which is introduced into a furnace and sintered at a temperature at which the material of the metallic binder adopts a pasty state while applying pressure to reduce the pore content of the starting material.

Abstract: To produce a hydrogen absorbing alloy powder which is an aggregate of alloy particles each including a metal matrix and added-components, an aggregate of metal matrix particles and an aggregate of added-component particles are used, and mechanical alloying is carried out. In this case, the relationship between the particle size D of the metal matrix particles and the particle size d of the added-component particles is set at d≦D/6. Thus, the milling time can be shortened remarkably.

Abstract: Disclosed is a method of forming a W—Cu composite powder having a Cu particle surrounded by tungsten by mixing and pulverizing tungsten oxide powder and copper oxide powder using turbular mixing or ball milling, reducing the Cu powder firstly at 200˜400° C. under a hydrogen atmosphere or a reducing gas environment including hydrogen, generating W nuclei on the reduced Cu powder at 500˜700° C., and growing the generated W nuclei at 750˜1080° C. as well as a use of the same for the use of powder injection molding.

Abstract: The invention relates to a method for producing rust-resistant, angular shot-blasting abrasives (>60 HRC) based on a Fe—Cr—C alloy. According to said method, a granulate consisting of an iron-chrome-carbon alloy is tempered to >60 HRC by subjecting it to a thermal treatment of greater than 900° Celsius in a reduced atmosphere. A stainless, hard material which can be reduced to angular granules is thus produced. This results in shot-blasting abrasives with excellent characteristics for treating the surface of workpieces consisting of stainless material, e.g. stainless steel, non-ferrous metal and natural stone.

Abstract: The present invention relates to a method of producing W—Cu based composite powder, which is used in heat-sink materials for high-power integrated circuits, electric contact materials, etc, and to a method of producing a W—Cu based sintered alloy by using the composite powder. The method of producing tungsten-copper based composite powder includes first preparing composite oxide powder by dissolving ammonium metatungstate, [(NH4)6(H2W12O40).

Abstract: Metal powder Ta and/or Nb, with or without one or metals from the group Ta, Nb, Ti, Mo, W, V, Zr and Hf, is made in a fine powder form by reduction of metal oxide by contact with a gaseous reducing agent, preferably an alkaline earth metal, to near complete reduction, leaching, further deoxidation and agglomeration, the powder so produced being sinterable to capacitor anode form and processable to other usages.

Abstract: Methods for producing medium-density articles from recovered high-density tungsten alloy (WHA) material, and especially from recovered WHA scrap. In one embodiment of the invention, the method includes forming a medium-density alloy from WHA material and one or more medium- to low-density metals or metal alloys. In another embodiment, medium-density grinding media, such as formed from the above method, is used to mill WHA scrap and one or more matrix metals into particulate that may be pressed and, in some embodiments, sintered to form medium-density articles therefrom.

Abstract: The present invention relates to a process for preparing a powdered tungsten-aluminum alloy, in which the powdered tungsten and aluminum as starting materials is mechanical alloyed at normal temperature to provide the tungsten-aluminum alloy. The process of this present invention is simple and easy and the device used is simple to handle. The process is carried out at room temperature, and is suitable for preparing an alloy of metals wherein there is large disparity between melting points and densities of the metals, which alloy could not be prepared by the known smelting process.

Abstract: A method for making a hydrided hydrogen storage alloy powder from component material. In the present method a material is worked at the same time it is hydrided. Working preferably involves comminution of the material.

Abstract: A method of producing high purity, low oxygen content titanium powder utilizes a hydrided titanium powder crushed to desired percentage of particles of not more than a desired size. These hydrided particles are dehydrided by a slow heating process under partial vacuum to draw the hydrogen out of the particles with a minimum of sintering of the particles. The hydrided particles may be initially heated relatively rapidly, over a period of between about two hours and six hours to a temperature of between about 450° C. and 500° C. and then slowly over a period of four to five days to a temperature of between 650° C. and 700° C., all under a partial vacuum, until the hydrogen content of the powder reaches a desired value. The now dehydrided titanium powder is cooled, again crushed if and as necessary to break up any sintered particles, screened, and packaged. The method of the invention minimizes the sintering of the particles during the dehydriding process.

Abstract: In a process of producing nanocrystalline metal hydrides, an elemental metal hydride of a first kind is subjected to a mechanical milling process with at least one elemental metal or at least one additional metal hydride to produce an alloy hydride.

Abstract: The invention concerns a process for producing low oxygen, essentially carbon free stainless steel powder, which comprises the steps of preparing molten steel which in addition to iron contains carbon and at least 10% of chromium, adjusting the carbon content of the melt to a value which is decided by the expected oxygen content after water atomising; water-atomising the melt and annealing the as-atomised powder at a temperature of at least 1120° C. in a reducing atmosphere containing controlled amounts of water. The invention also concerns a water-atomised powder including 10% by weight of chromium and having a carbon content between 0.2 and 0.7, preferably between 0.4 and 0.6% by weight and an oxygen/carbon ratio of about 1 to 3 and at most 0.5% of impurities, as well as the annealed powder obtained according to the process.

Abstract: Feed material for use in producing a thixotropic alloy comprising pellets in the form of a solid cylinder having a length to diameter ratio in the range of from 1:1 to 2:1 and a maximum length of 0.250 inch.

Abstract: A power of an alloy of Ni and Mg, La, Be or Li, consisting of crystallites having a grain size lower than 100 nm and a crystalline structure allowing hydrogen absorption. This powder which is preferably obtained by mechanical grinding, may consist of cristallites of Mg2Ni, LaNi5 or of Ni-based alloys of Be or Li having a grain size lower than 100 nm. The powder may also consist of cristallites of formula Mg2−xNi1+x, x ranging from −0.3 to +0.3, which have a grain size lower than 100 nm, and preferably lower than 30 nm. This crystalline powder is particularly useful for storing and transporting hydrogen. Indeed, it has been discovered that such Ni-based nanocrystalline powder requires no or only one single activation treatment at low temperature to absorb hydrogen. It has also been discovered that the kinetic of absorption and diffusion of hydrogen within the powder is much faster. This can be explained by the presence of a large number of grain boundaries.

Abstract: A hydrogen storage composition has a hydrogenated state and a dehydrogenated state; the hydrogenated state comprises a hydrided composition of lithium and an element M which forms a hydride, for example Be or Mg, an element E which forms a compound or solid solution with lithium, e.g. C, B or Zn, or a mixture thereof; there are thus provided reversible Li-based hydrides of high hydrogen capacity.

Abstract: The present invention relates to a method of making a cemented carbide with submicron WC grain size with a powder metallurgical technique including milling, pressing and sintering. The method includes milling all components except WC for about three hours, then adding the WC powder and milling for about ten additional hours. In this way a cemented carbide powder with acceptable low compacting pressure is obtained.

Abstract: Ductile, high-density, non-toxic W—Ni—Mn—Fe alloy compositions and methods of manufacture by which they may be converted to shot (for use in shotshells) and other useful products traditionally made of lead alloys are presented. Product of the present invention is softer than gun barrel steels and may be hand-loaded (and recycled/reloaded) into shotshells using conventional powders, primers, casings and wads. If desired for game law enforcement, shot of the present invention may be formulated to be ferromagnetic while retaining all other desirable attributes.

Abstract: Titanium based metal matrix composites reinforced with ceramic particulate are well known, based on a blend of titanium alloy powders with ceramic powders, e.g., aluminum oxide powders, utilizing a low energy ball milling process, followed by cold compacting and sintering to produce an appropriate composite. This prior art process is disadvantaged from the point of view that there are virtually no particles in the blend below the micrometer size range, which lack has a deleterious effect on the subsequent processing of the composite. This problem has been overcome by utilizing dry high energy intensive milling in the process, which has the effect of providing the necessary number of small particles below the micrometer size range as well as enhancing the reactivity of different particles with one another.

Abstract: A set of processes for preparing metal powders, including metal alloy powders, by ambient temperature reduction of a reducible metal compound by a reactive metal or metal hydride through mechanochemical processing. The reduction process includes milling reactants to induce and complete the reduction reaction. The preferred reducing agents include magnesium and calcium hydride powders. A process of pre-milling magnesium as a reducing agent to increase the activity of the magnesium has been established as one part of the invention.

Abstract: A new, cost effective process for the production of ultrafine particles which is based on mechanically activated chemical reaction of a metal compound with a suitable reagent. The process involves subjecting a mixture of a metal compound and a suitable reagent to mechanical activation to increase the chemical reactivity of the reactants and/or reaction kinetics such that a chemical reaction can occur which produces a solid nano-phase substance. Concomitantly, a by-product phase is also formed. This by-product phase is removed so that the solid nano-phase substance is left behind in the form of ultrafine particles. During mechanical activation a composite structure is formed which consists of an intimate mixture of nano-sized grains of the nano-phase substance and the reaction by-product phase.

Abstract: The present invention relates to a method and apparatus of manufacturing nickel-metal-hydride alloy powder material. The furnace charge of nickel-metal-hydride alloy is melted in vacuum or argon atmosphere in this invention. After melting, the molten alloy is gas atomized to fine spherical powder or centrifugal atomized to flaky shape. Then the powders are fed into a hydrogen heat treatment chamber for hydrogen heat treatment and pulverization. This invention integrates the melting, pulverizing and hydrogen treatment of nickel-metal hydride alloy powder into a whole step. It can charge and pulverize continuously and is suitable for the large-scale industrialized production of homogeneous composition and least segregation nickel-metal hydride alloy powder.

Abstract: Titanium hydride powder with a maximum particle diameter of substantially 150 &mgr;m or less, the powder with particle diameters of 10 &mgr;m or less being 8% or less by weight, which is produced via step for embrittling a titanium and titanium alloy by hydrogenation, and titanium powder with a maximum particle diameter of which is 150 &mgr;m or less, the powder with particle diameters of 10 &mgr;m or less being 5% or less by weight. In the powder the oxygen content and the chlorine content are reduced, and the flowability and compactibility are excellent. This powder is particularly suitable for a raw material to produce a sintered titanium or titanium alloy product by the powder metallurgy.

Abstract: The invention concerns metal powder granulates comprising one or a plurality of the metals Co, Cu, Ni, W and Mo. The invention further concerns a method for the production of these granulates and the use thereof. The production method is characterized in that a metal compound comprising one or a plurality of the groups comprising oxides, hydroxides, carbonates, hydrogenocarbonates, oxalates, acetates, formiates with binder and optionally in addition between 40 and 80% solvent, relative to the solids content, is granulated as the starting component, and the granulates are thermally reduced in a hydrogen-containing gaseous atmosphere to form the metal powder granulates, the binder and the solvent, if used, being removed completely.

Abstract: A sintered friction material includes a copper alloy base and hard particles. The copper alloy base includes copper and at least one of, and preferably both, Zn and Ni within a total range of 5 to 40 wt % of the copper alloy base. The hard particles are uniformly dispersed in a matrix formed by the original composite copper alloy powder constituting the base, in a content amount j within a range of 10 to 30 wt % of the friction material.

Abstract: Austenitic stainless steels and nickel-base alloys containing, by wt. %, 0.1 to 3.0% V, 0.01 to 0.08% C, 0.01 to 0.5% N, 0.05% max. each of Al and Ti, and 0.005 to 0.10% O, are strengthened and ductility retained by atomization of a metal melt under cover of an inert gas with added oxygen to form approximately 8 nanometer-size hollow oxides within the alloy grains and, when the alloy is aged, strengthened by precipitation of carbides and nitrides nucleated by the hollow oxides. Added strengthening is achieved by nitrogen solid solution strengthening and by the effect of solid oxides precipitated along and pinning grain boundaries to provide temperature-stabilization and refinement of the alloy grains.

Abstract: A the magnetically anisotropic magnetic powder having an average particle size of 1—1000 &mgr;m and made from a magnetically anisotropic R-TM-B-Ga or R-TM-B-Ga-M alloy having an average crystal grain size of 0.01-0.5 &mgr;m, wherein R represents one or more rare earth elements including Y, TM represents Fe which may be partially substituted by Co, B boron, Ga gallium, and M one or more elements selected from the group consisting of Nb, W, V, Ta, Mo, Si, Al, Zr, Hf, P, C and Zn. This is useful for anisotropic resin-bonded magnet with high magnetic properties.