Abstract: The application discloses a coating material for fabricating rare earth magnets and a method using the coating material to prepare neodymium-iron-boron (NdFeB) magnets having high coercive force. The coating material includes alloy powder A and low-melting-point metal powder B. The alloy powder A is heavy rare earth element R powder, or rare earth-metal alloy (RM) powder, or rare earth-metal-hydrogen alloy (RMH) powder. The heavy rare earth elements are Dy and/or Tb, metal is Fe or Co, or an alloy of Fe and Co, and H is hydrogen element. The low-melting-point metal powder B is one or two of Zn, Al, and Ga. The preparation method includes the following steps: the coating material is mixed into a slurry, and the slurry is coated on the surface of NdFeB magnet, and then apply a two-stage diffusion heat treatment to the magnet, followed by an annealing process to obtain a high-coercivity NdFeB magnet.

Abstract: A method for producing copper metal from copper concentrates without generating waste by: (a) oxidizing copper concentrate; (b) cleaning and cooling the gases; (c) feeding to a reduction reactor; (d) cleaning the gases; (e) discharging hot powders and calcines into water; (f) performing magnetic separation; (g) thickening and filtering the magnetic fraction; (h) floating silica and inert materials; (i) thickening and filtering the silica and inert materials; (j) thickening and filtering the final concentrate containing the copper metal and noble metals; (k) smelting the final concentrate of copper and noble metals; and (l) recirculating ground smelt slag to a roasting reactor.

Abstract: This disclosure relates to a manufacture method of a bushing, a bushing and an excavator to alleviate the problems of insufficient lubricity and wear resistance of the bushing. The bushing includes an inner ring and an outer ring. The manufacture method of the bushing includes the following steps: grinding a first mixed powder containing Fe, Al, Ti, Cr and V, nitriding the ground first mixed powder to form a nitrogen-rich stable compound powder, and then carrying out molding by pressing and sintering the nitrogen-rich stable compound powder to form the outer ring; grinding a second mixed powder containing Fe and Mo, sulfurizing the ground second mixed powder to form a sulfurized powder containing FeS and MoS2, and carrying out molding by pressing the sulfurized powder to form the inner ring; and placing the inner ring in the outer ring and carrying out sintering to obtain the bushing.

Abstract: A micro-alloyed copper powder was produced using gas atomization reaction synthesis, with the alloy preferably comprising Cu-0.3Zr-0.15Ag wt. %. The novel copper alloy improves the manufacturability of copper in powder bed fusion manufacturing processes by minimizing or avoiding the prior art problems associated with oxidation of the copper precursor used in additive manufacturing. Advantageously, the provided copper alloy powder maintains the high electrical conductivity of copper while addressing the prior art oxidation issue.

Abstract: Disclosed is a metal particle that includes a basal phase that contains Sn, an Sn—Cu alloy and Sb; and an intermetallic compound crystal that contains Sn, Cu, Ni, Ge, Si and Ti, included in the basal phase, the metal particle has a chemical composition given by 0.7 to 15% by mass of Cu, 0.1 to 5% by mass of Ni, 0.1 to 14% by mass of Sb, 0.001 to 0.1% by mass of Ge, 0.001 to 0.1% by mass of Si, 0.001 to 0.1% by mass of Ti, and the balance of Sn; the basal phase has a chemical composition given by 85 to 99.9% by mass of Sn, 5% by mass or less of Cu, and 0.1 to 14% by mass of Sb; and, at least parts of the basal phase and the intermetallic compound crystal form an endotaxial joint.

Abstract: This hot-rolled steel sheet has a predetermined chemical composition, in a microstructure at a ¼ position of a sheet thickness in a sheet thickness direction from a surface, by area ratios, a primary phase is 95.00% to 98.00% of bainite, a secondary phase is 2.00% to 5.00% of tempered martensite, an average grain size of the secondary phase is 1.5 ?m or less, a pole density in a (110)<112> orientation is 3.0 or less, an average grain size of an iron-based carbide is 0.100 ?m or less, in a microstructure from the surface to a 1/16 position of the sheet thickness in the sheet thickness direction from the surface, a pole density in a (110)<1-11> orientation is 3.0 or less, and a tensile, strength TS is 980 MPa or more.

Abstract: The invention disclosed a method for recycling rare earth elements from waste light-emitting electronic components by pyrolysis and alkaline melting-acid leaching. Based on the pyrolysis properties of the organic polymer, through catalytic pyrolysis of the organic polymer material in electronic components and convert the carbon in the residue into water gas, realize high-efficient dismantling of waste electronic component packaging materials. The traditional problems that the compositions of waste light-emitting electronic components are difficult to disassemble are solved, the generated pyrolysis gas and water gas can continuously supply energy for the pyrolysis system and recover the heat in the flue gas to save energy.

Abstract: Hydrogen storage materials being inexpensive and having hydrogen absorption (storage) and desorption properties suitable for hydrogen storage are provided. The hydrogen storage materials have alloys with an elemental composition of Formula (1), a hydrogen storage container containing the hydrogen storage material, and a hydrogen supply apparatus including the hydrogen storage container: LaaCebSmcNidMe ??(1) wherein M is Mn or both of Mn and Co, a satisfies 0.60?a?0.90, b satisfies 0?b?0.30, c satisfies 0.05?c?0.25, d satisfies 4.75?d?5.20, e satisfies 0.05?e?0.40, a+b+c=1, and d+e satisfies 5.10?d+e?5.35.

Abstract: An injection molding powder includes a metal powder, and a film with which a particle surface of the metal powder is coated and which contains a fluorine compound, in which a contact angle of hexadecane measured at 25° C. by a ?/2 method is 60° or more and 110° or less in a state in which the injection molding powder is laid in layers.

Abstract: A method for preparing a rare earth aluminum alloy powder applicable for additive manufacturing includes: heating and melting aluminum ingots into an aluminum melt; adding required alloy elements to the aluminum melt to obtain an alloy melt in which the alloy elements are present in the following preset percentages by weight: 1.00% to 10.00% of Ce, 0.05% to 8.00% of Mg, 0.10% to 7.50% of Y, 0.10% to 2.50% of Zr, less than 0.1% of impurities, and the balance aluminum; leading out the alloy melt through a fluid guiding pipe, and impacting the alloy melt with a high-pressure gas flow so that the alloy melt is atomized into fine droplets under an action of surface tension, and solidified into spherical alloy powder; and collecting the spherical alloy powder in a vacuum collector, and screening and drying the spherical alloy powder to obtain the rare earth aluminum alloy powder.

Abstract: The present application relates to an alloy powder composition, a method for manufacturing a molding from the alloy powder composition, a molding obtained from the method, and an inductor comprising the molding. The alloy powder composition comprises an Fe-based amorphous alloy powder and an Fe-based crystalline alloy powder; wherein the Fe-based amorphous alloy powder has a volume resistivity of equal to or less than 1×106 ?·cm when subjected to a force of 20 kN and the Fe-based crystalline alloy powder has a volume resistivity of equal to or greater than 1×106 ?·cm when subjected to a force of 20 kN; and wherein the Fe-based amorphous alloy powder comprises Fe, Co, Cr, C, P, and Si.

Abstract: Provided is a hot rolled steel sheet having a predetermined chemical composition and a microstructure comprising, by area ratio, pearlite: 90 to 100% and pro-eutectoid ferrite: 0 to 10%, wherein the pearlite has an average lamellar spacing of 0.08 to 0.30 ?m, and the percentage of cementite in the pearlite having a major axis length of more than 0.3 ?m and an aspect ratio of less than 3.0 is less than 15%.

Abstract: An additively manufactured body including a Ni—Cr—Mo based alloy that is excellent in mechanical properties. An additively manufactured body of the present invention is a member including a Ni-based alloy that includes Ni at the largest content by a mass ratio, and Cr and Mo at second largest contents by a mass ratio; and includes segregation of Mo in at least a part of a crystal grain(s). This crystal grain(s) has columnar cell structures (CL), and preferably the segregation of Mo exists between adjacent cell structures. A tensile strength of 850 MPa or higher and an elongation of 50% or higher can be obtained.

Abstract: Disclosed are an anisotropic nanocrystalline rare earth permanent magnet and a preparation method thereof. The rare earth permanent magnet includes an RE-Fe—B matrix phase and a second phase, wherein the RE-Fe—B matrix phase includes main phase RE2Fe14B flaky nanocrystallines regularly arranged and an RE-rich phase around main phase grains, the main phase RE2Fe14B flaky nanocrystallines having an average grain size in a length direction of 70 nm to 800 nm and an average grain size in a thickness direction of 30 nm to 200 nm; and the second phase includes at least one selected from the group consisting of an M-Cu phase and an M-Cu—O phase, M being at least one selected from the group consisting of Ca and Mg.

Abstract: A dust core including soft magnetic metal particles and a grain boundary phase, wherein the grain boundary phase includes Si and Ti.

Abstract: Intended is to improve the corrosion resistance of an overlay used in a nuclear power plant, and to reduce dissolution of cobalt from an overlay. The corrosion and wear resistant overlay 7 is formed along a surface of a base 2 by laser lamination modeling, and is configured from a plurality of metal layers 1a, 1b, 1c, and 1d of a Co-base alloy. The thickness of carbide eutectics that precipitate in the metal layers 1a, 1b, 1c, and 1d is the largest in the metal layer 1a closest to the base 2, and is gradually smaller in the metal layers 1b, 1c, and 1d farther away from the base 2. The intensity of the laser beam applied to form layers by laser lamination modeling is adjusted so that the carbide eutectics that precipitate in at least the outermost metal layer 1d have a controlled size of 10 ?m or less.

Abstract: The present disclosure relates to the technical field of powder metallurgy, especially to a coarse grain cemented carbide and a preparation method thereof. Pseudo particles in coarse grain tungsten carbide are removed by pretreating process. Broken of the coarse grain tungsten carbide in traditional wet milling is avoid by solid-liquid stirring, spay granulating and surface covering, which also guarantee the uniform distribution of PEG and cobalt salt. Transformation from cobalt salt to cobalt is safely and effectively guaranteed by performing two sintering stages with different atmosphere and temperature to obtain a WC—Co mixture material. By performing spark plasma sintering process, the precipitation of nano fine grain tungsten carbide guarantees regrowth of defect occurred in pretreating process. The coarse grain cemented carbide with the average grain size of WC above 10 ?m, the uniform cobalt phase distribution and be bending strength not less than 2200 MPa is prepared.

Abstract: A non-oriented electrical steel sheet having a high magnetic flux density and a low iron loss at a high frequency is produced by subjecting a slab containing, in mass %, C: not more than 0.0050%, Si: 2.8 to 6.5%, Mn: 0.05 to 2.0%, P: not more than 0.10%, S: not more than 0.0050%, Al: 0.3 to 2.0%, N: not more than 0.0050% and Zn: 0.0005 to 0.0050% to a hot rolling, a hot-band annealing, a cold rolling and a finish annealing, a dew point in the hot-band annealing is set to 0 to 70° C. and an atmosphere of the finish annealing has a nitrogen content of not more than 30 vol % and a dew point of not higher than ?20° C., and a ratio of the amount of nitrogen present as AlN in an entire sheet thickness to the amount of nitrogen present as AlN in a layer from one-side surface of steel sheet to a depth of 1/20 of sheet thickness is made to not less than 5.0.

Abstract: The disclosure describes assemblies, systems, and techniques for reinforcing complex geometries of pressure vessels using a pre-sintered preform (PSP) braze material that includes a low-melt powder and a high-melt powder. An example component includes a substrate comprising at least a portion of a pressure vessel. The substrate defines a contoured exterior surface of the pressure vessel. The component includes a pre-sintered preform (PSP) reinforcement formed on the surface of the substrate by brazing, wherein the PSP reinforcement comprises a low-melt powder and a high-melt powder.

Abstract: Provided is a coated body including a base member coated with an iron-based amorphous alloy powder capable of maintaining an amorphous structure even after a coating process, such that the durability, surface hardness, and friction of the base member may be improved. The coated body includes the base member and a coating layer which is formed of an iron-based amorphous alloy and provided on a surface of the base member.