The present invention provides a high thermal conductivity iron-copper (FeCu) alloy and a method of manufacturing the same. The present invention provides an iron-copper alloy containing 55 to 95 atomic % of iron and 5 to 45 atomic % of copper. The present invention also provides an iron-copper alloy manufacturing method including a first step of preparing a melting furnace; a second step of adding iron and copper to the melting furnace and performing dissolution and molten metal formation so as to contain 55 to 95 atomic % of iron and 5 to 45 atomic % of copper based on the weight of the iron-copper alloy; a third step of stabilizing the molten metal; and a fourth step of pouring the stabilized molten metal into a casting mold and performing casting. The present invention provides an iron-copper alloy that is an iron-based alloy containing iron as a main component and having high thermal conductivity and mechanical properties along with, for example, an electromagnetic-wave shielding property and a soft magnetic property, which can be widely used for metal parts and electronic parts and machine parts.

The present specification relates to a method for fabricating metal nanoparticles.

The present disclosure is directed at methods of preparing rare earth-based permanent magnets having improved coercivity and remanence, the method comprising one or more steps comprising: (a) homogenizing a first population of particles of a first GBM alloy with a second population of particles of a second core alloy to form a composite alloy preform, the first GBM alloy being substantially represented by the formula: AC.sub.bR.sub.xCo.sub.yCu.sub.dM.sub.z, the second core alloy being substantially represented by the formula G.sub.2Fe.sub.14B, where AC, R, M, G, b, x, y, and z are defined; (b) heating the composite alloy preform particles to form a population of mixed alloy particles; (c) compressing the mixed alloy particles, under a magnetic field of a suitable strength to align the magnetic particles with a common direction of magnetization and inert atmosphere, to form a green body; (d) sintering the green body; and (e) annealing the sintered body. Particular embodiments include magnets comprising neodymium-iron-boron core alloys, including Nd.sub.2Fe.sub.14B.

The present disclosure is directed at methods of preparing rare earth-based permanent magnets having improved coercivity and remanence, the method comprising one or more steps comprising: (a) homogenizing a first population of particles of a first GBM alloy with a second population of particles of a second core alloy to form a composite alloy preform, the first GBM alloy being substantially represented by the formula: AC.sub.bR.sub.xCo.sub.yCu.sub.dM.sub.z, the second core alloy being substantially represented by the formula G.sub.2Fe.sub.14B, where AC, R, M, G, b, x, y, and z are defined; (b) heating the composite alloy preform particles to form a population of mixed alloy particles; (c) compressing the mixed alloy particles, under a magnetic field of a suitable strength to align the magnetic particles with a common direction of magnetization and inert atmosphere, to form a green body; (d) sintering the green body; and (e) annealing the sintered body. Particular embodiments include magnets comprising neodymium-iron-boron core alloys, including Nd.sub.2Fe.sub.14B.

A method may include coating a substrate with a solution, where the solution includes one or more metal salts and a first solvent. The one or more metal salts may be configured to dissolve in the first solvent. The method may further include adding a second solvent to the coated substrate until one or more metal salt crystals precipitate over a surface of substrate. The second solvent may include an antisolvent where the one or more metal salts of the solution are insoluble in the second solvent. The method may further include performing a microwave heating process to apply microwave heat to the substrate while the second solvent is present to induce thermal decomposition of the one or more metal salts until one or more metal nanostructures are formed on the surface of the substrate.

A method may include coating a substrate with a solution, where the solution includes one or more metal salts and a first solvent. The one or more metal salts may be configured to dissolve in the first solvent. The method may further include adding a second solvent to the coated substrate until one or more metal salt crystals precipitate over a surface of substrate. The second solvent may include an antisolvent where the one or more metal salts of the solution are insoluble in the second solvent. The method may further include performing a microwave heating process to apply microwave heat to the substrate while the second solvent is present to induce thermal decomposition of the one or more metal salts until one or more metal nanostructures are formed on the surface of the substrate.

A thermal two-step process for producing ferronickel (FeNi) alloy particles from a nickel-containing sulfide material is provided. The process comprises heating a solid mixture comprising a nickel-containing sulfide material and an iron-containing material in agglomerated form, in an inert or reducing atmosphere to a heating temperature at which the solid mixture is partially molten and obtaining a hot mixture comprising a nickel-containing liquid phase, gangue, and FeNi alloy particles, and then controlled cooling of the hot mixture to increase the particle size and Ni content of said FeNi alloy particles and obtaining a processed material comprising said FeNi alloy particles having an increased particle size and an increased Ni content. Finally, the FeNi alloy particles are separated from the processed material. There is also provided FeNi alloy particles obtained from the process.

A thermal two-step process for producing ferronickel (FeNi) alloy particles from a nickel-containing sulfide material is provided. The process comprises heating a solid mixture comprising a nickel-containing sulfide material and an iron-containing material in agglomerated form, in an inert or reducing atmosphere to a heating temperature at which the solid mixture is partially molten and obtaining a hot mixture comprising a nickel-containing liquid phase, gangue, and FeNi alloy particles, and then controlled cooling of the hot mixture to increase the particle size and Ni content of said FeNi alloy particles and obtaining a processed material comprising said FeNi alloy particles having an increased particle size and an increased Ni content. Finally, the FeNi alloy particles are separated from the processed material. There is also provided FeNi alloy particles obtained from the process.

A method and system for recovering a high yield of low carbon ferrochrome from chromite and low carbon ferrochrome produced by the method. A stoichiometric mixture of feed materials including scrap aluminum granules, lime, silica sand, and chromite ore are provided into a plasma arc furnace. The scrap aluminum granules are produced from used aluminum beverage containers. The feed materials are heated, whereupon the aluminum in the aluminum granules produces an exothermic reaction reducing the chromium oxide and iron oxide in the chromite to produce molten low carbon ferrochrome with molten slag floating thereon. The molten low carbon ferrochrome is extracted, solidified and granulated into granules of low carbon ferrochrome. The molten slag is extracted, solidified and granulated into granules of slag.

An ejector of liquid material to form spherical particles includes a crucible for retaining liquid material, an orifice area defining at least one orifice, and an actuator responsive to a voltage signal for causing material to be ejected from the crucible through the orifice. A method comprises applying a voltage signal of a first type and a second type to the actuator, causing a material droplet of a first size and a second size to be ejected through the orifice. Alternately or in addition, the orifice area defines a first orifice having a first diameter and a second orifice having a second diameter different from the first diameter, whereby a signal causes a material droplet of a first size to be ejected through the first orifice and a material droplet of a second size to be ejected through the second orifice.