A method includes providing a metallic first powder having a plurality of first particles with a first mean particle diameter. A second powder added to the first powder has a plurality of second particles with a second mean particle diameter less than the first mean particle diameter. Energy is applied to at least the second powder so as to selectively heat the second particles. The first powder is combined with the heated second powder to form a modified powder including modified powder particles. Modified powder particles have an interior portion containing an interior composition, and an outer surface portion with an outer composition different from the interior composition.

A dust core includes: a plurality of soft magnetic particles each composed of an iron-based alloy containing aluminum, each of a surface of the plurality of soft magnetic particles being coated with an aluminum nitride film; and an aluminum oxide film with which at least the aluminum nitride films located at a surface of the dust core are entirely coated.

A sintered polycrystalline body and a method of forming the sintered polycrystalline body are disclosed. The sintered polycrystalline body comprises a plurality of particles cubic boron nitride dispersed in a matrix. The matrix includes materials selected from compounds of any of titanium and aluminium. The polycrystalline body further comprises 0.1 to 5.0 volume % of lubricating chalcogenide particles dispersed in the matrix. The chalcogenide particles have a coefficient of friction of less than 0.1 with respect to a workpiece material. Preferably sulfide particles are used as lubricant. Preferably 30-70 vol.-% cBN is contained. Sintering takes place at 1100-1600 C. and 4-8 GPa.

The invention relates to method of making a molybdenum alloy which has a high titanium content and further comprises silicon and/or boron. The method comprises subjecting to pressureless sintering or sintering under pressure in an inert gas atmosphere a mixture of one or more powders (i) of an alloy of Mo and Ti and, optionally, one or more additional metals X and/or (i) powders of Mo and of TiN, and (ii) one or more powders comprising one or more powders of silicides of Mo and/or Ti and/or (iii) one or more powders of nitrides which comprise Si.sub.3N.sub.4 powder and/or BN powder.

A hierarchical composite wear component includes a reinforced part and a non-reinforced part, the reinforced part including a three-dimensionally interconnected network of periodically alternating millimetric ceramic-metal composite granules with millimetric interstices. The ceramic-metal composite granules have at least 52 vol % micrometric particles of titanium carbide embedded in a first metal matrix, the porosity of the ceramic-metal composite granules being lower than 5 vol %. The three-dimensionally interconnected network of ceramic-metal composite granules is embedded in a second metal matrix. The volume content of ceramic-metal composite granules in the reinforced part is 45 to 65 vol %. The composition of the first metal matrix is substantially different from the second metal matrix. The second metal matrix has the ferrous cast alloy present in the millimetric interstices of the reinforced part. The millimetric interstices additionally include at least 1 vol % of micrometric carbide particles.

A method of forming MAX phase structures having one or more apertures includes filing a green body having one or more apertures with an insert powder and sintering while applying a load to the insert filled green body to from the MAX phase structure.

A cBN sintered body including cBN and a binder phase, wherein a content ratio of the cBN is 80 to 94 volume %, a content ratio of the binder phase is 6 to 20 volume %, the binder phase contains a metal phase, a V compound, and an Al compound, the metal phase contains one or more selected from the group consisting of Ni, and a Ni-containing alloy and solid solution, the Ni-containing alloy and solid solution each contain Ni and one or more elements selected from the group consisting of Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, and Co, the V compound contains one or more selected from the group consisting of VN, VCN, and VC, the Al compound contains one or more selected from the group consisting of Al.sub.2O.sub.3, AlN, and AlB.sub.2, a maximum peak position 2 of a 200 plane of the metal phase is less than 51.60, and I.sub.1/(I.sub.1+I.sub.2) is 0.40 to 0.80, where I.sub.1 denotes an X-ray diffraction peak intensity of a 220 plane of the V compound, and I.sub.2 denotes an X-ray diffraction peak intensity of a 200 plane of the metal phase.

A powder metal composition comprising an aluminum (Al) powder metal, an aluminum-copper (AlCu) powder metal, a magnesium (Mg) powder metal, a tin (Sn) powder metal, an aluminum-silicon (AlSi) powder metal, and aluminum nitride (AlN) as a metal-matrix composite additive. In at least some forms, the aluminum (Al) powder metal includes a portion which is fine aluminum powder metal. This powder metal composition is compressible to form a green powder metal compact which may be sintered to form a sintered part which has a composition and properties approximating that of a 6061 aluminum alloy product.

A cubic boron nitride sintered material of the present disclosure includes 35 to 100 volume % of a cubic boron nitride grain and 0 to 65 volume % of a binder, wherein: a lattice constant of the cubic boron nitride grain is 3.6140 to 3.6161 , a silicon content in the cubic boron nitride grain is 0.02 mass % or less, and the binder material includes at least one selected from a group consisting of a compound and a solid solution of the compound, the compound consisting of at least one element selected from a group consisting of a group 4 element, a group 5 element, a group 6 element in the periodic table, aluminum, silicon, iron, cobalt and nickel, and at least one element selected from a group consisting of carbon, nitrogen, boron and oxygen.

A SmFeN-based rare earth magnet more resistant to demagnetization than ever before in an environment where an external magnetic field is applied, particularly at high temperatures, and a production method thereof are provided. The present disclosure presents a production method of a rare earth magnet, including preparing a coated magnetic powder, compression-molding the coated magnetic powder in a magnetic field to obtain a magnetic-field molded body, pressure-sintering the magnetic-field molded body to obtain a sintered body, and heat-treating the sintered body, and a rare earth magnet obtained by the method. D.sub.50 of the magnetic powder in the coated magnetic powder is 1.50 m or more and 3.00 m or less, the content ratio of the zinc component in the coated magnetic powder is 3 mass % or more and 15 mass % or less, and the heat treatment temperature is 350 C. or more and 410 C. or less.