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 MgZr, MgZnZr, MgAlZnMn, MgZnCuMn or MgW alloy, or a combination thereof, dispersed in the cellular nanomatrix.

An object of the invention is to provide an alloy article that exhibits even better mechanical properties than conventional high entropy alloy articles without sacrificing high corrosion resistance thereof. An alloy article according to the invention comprises matrix phase crystal grains being equiaxed crystals with an average crystal grain size of 150 m or less, the alloy article having a metallic composition including: Co, Cr, Fe, Ni and Ti, each within a range of 5 atomic % or more and 35 atomic % or less; Mo within a range of more than 0 atomic % and less than 8 atomic %; and a balance comprising inevitable impurities, wherein in the matrix phase crystal grains, ultrafine particles with an average particle size of 100 nm or less and oxide particles with an average particle size of 100 nm or less are dispersedly precipitated.

Disclosed is a method of manufacturing a metal matrix composite in which oxide nanoparticles are dispersed. Metal matrix composite powders in which oxide nanoparticles are dispersed are prepared. Gibbs free energy of the oxide nanoparticles is greater than that of an oxide of a metal matrix. A bulk processed material is manufactured from the composite powders through hot forming or a cast material is manufactured by inputting the composite powder into a molten base metal and then rapidly stirring a resultant mixture. The bulk processed material or the cast material is heat-treated so that atoms of the metal matrix and atoms of the oxide nanoparticles mutually diffuse. Oxygen atoms originating from the oxide nanoparticles are diffused and dispersed in the metal matrix.

Embodiments of a method for producing powder mixtures having uniform dispersion of ceramic particles within larger superalloy particles are provided, as are embodiments of superalloy powder mixtures. In one embodiment, the method includes producing an initial powder mixture comprising ceramic particles mixed with superalloy mother particles having an average diameter larger than the average diameter of the ceramic particles. The initial powder mixture is formed into a consumable solid body. At least a portion of the consumable solid body is gradually melted, while the consumable solid body is rotated at a rate of speed sufficient to cast-off a uniformly dispersed powder mixture in which the ceramic particles are embedded within the superalloy mother particles.

The invention relates to a method for producing a composite material consisting of a metal and ceramic alloy, comprising steps of: producing a mixture of metal powder and ceramic powder, the particle size of the metal powder being micrometric and the particle size of the ceramic powder being nanometric; and exposing said mixture to a focused energy source that selectively fuses part of a bed of said powder mixture.

A compressed powder body comprises metal particles and an interposed substance which is interposed between the metal particles. Each of the metal particles is made of FeSiAl-based soft magnetic alloy and has a flat shape when seen along a predetermined direction. The metal particles include one or more of the metal particles each of which is formed with one or more predetermined holes. Each of the predetermined holes passes through the metal particle in the predetermined direction. Each of the predetermined holes has a maximum width in a predetermined plane perpendicular to the predetermined direction the maximum width being equal to or larger than a thickness of the metal particle with the predetermined hole in the predetermined direction.

High quality silver-iron titanate nanoparticles are synthesized using an ilmenite source. The silver-iron titanate nanoparticles were characterized using various analytical techniques. As compared to prior art methods, the disclosed methods provide for the simple, cost-effective synthesis of relatively high-quality silver-iron titanate nanoparticles. The silver-iron titanate nanoparticles can be used in a variety of important agricultural, industrial, and hygienic uses, including in the important area of plant tissue culture explant sterilization.

A composition for forming an electrode includes a conductive powder, a glass frit, an organic binder, and a solvent. The organic binder includes a polymer including a structural unit represented by Chemical Formula 1 and a structural unit represented by Chemical Formula 2.

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In Chemical Formulae 1 and 2, each substituent of Chemical Formulae 1 and 2 is the same as in the detailed description.

The present invention relates to a powder mixture for iron-based powder metallurgy which is obtained by mixing an iron-based powder and at least one kind of powders selected from the group consisting of a CaAlSi-based composite oxide powder and a CaMgSi-based composite oxide powder, in which with a peak height of a main phase exhibiting the highest peak intensity by X-ray diffraction as 100, the composite oxide powder has a relative height of 40% or less, with respect to the main phase, of a peak height of a second phase having the second highest peak intensity.

A cermet material includes as mass percentages, at least: 50% to 90% of a metallic phase containing an alloy of copper (Cu) and nickel (Ni), and 10% to 50% of an oxide phase containing at least iron, nickel and oxygen with the following proportion by mass of Ni: 0.2%Ni17%. An electrode, preferably an anode, may include this cermet material.