An apparatus and method for manufacturing solid particles based on inert gas evaporation. The method includes forming a continuous gaseous feed flow, and injecting the continuous gaseous feed flow through an inlet into a free-space region of a reactor chamber in the form of a feed jet flow, and forming at least one continuous jet flow of a cooling fluid and injecting the at least one jet flow of cooling fluid into the reaction chamber. The feed jet flow is made by passing the feed flow at a pressure above the reactor chamber pressure in the range from 0.01.Math.10.sup.5 to 20.Math.10.sup.5 Pa through an injection nozzle. The jet flow of cooling fluid is made by passing the cooling fluid through an injection nozzle which directs the jet flow of cooling fluid such that it intersects the feed jet flow with an intersection angle between 30 and 150°.

Composite compositions comprising metal nanoparticles and/or microparticles and a binder are provided. Composites are tunable to achieved specific desired characteristics, such as sintering temperature, melting temperature, print resolution, and surface binding capabilities. Preferably, the metal particles may be produced using plasma-based technology. The composites are spreadable or printable and are especially useful in the field of electronics. The composites are capable of being used to form highly conductive wires or traces in electronic components. Preferably, the resulting metal structure has a low level of metal oxidation. The disclosure also includes methods for producing composite materials.

Composite compositions comprising metal nanoparticles and/or microparticles and a binder are provided. Composites are tunable to achieved specific desired characteristics, such as sintering temperature, melting temperature, print resolution, and surface binding capabilities. Preferably, the metal particles may be produced using plasma-based technology. The composites are spreadable or printable and are especially useful in the field of electronics. The composites are capable of being used to form highly conductive wires or traces in electronic components. Preferably, the resulting metal structure has a low level of metal oxidation. The disclosure also includes methods for producing composite materials.

An object of the present invention to provide copper fine particles which can be sintered at a lower temperature than that of the conventional copper fine particles without causing a cost increase, a decrease in productivity, a method for producing the copper fine particles, and a sintered body, and the present invention provides copper fine particles having a coating film containing cuprous oxide and copper carbonate on the surface thereof.

An object of the present invention to provide copper fine particles which can be sintered at a lower temperature than that of the conventional copper fine particles without causing a cost increase, a decrease in productivity, a method for producing the copper fine particles, and a sintered body, and the present invention provides copper fine particles having a coating film containing cuprous oxide and copper carbonate on the surface thereof.

The present disclosure generally relates to metallic powders for use in multilayer ceramic capacitors, to multilayer ceramic capacitors containing same and to methods of manufacturing such powders and capacitors. The disclosure addresses the problem of having better controlled smaller particle size distribution, with minimal contaminant contents which can be implemented at an industrial scale.

The present disclosure generally relates to metallic powders for use in multilayer ceramic capacitors, to multilayer ceramic capacitors containing same and to methods of manufacturing such powders and capacitors. The disclosure addresses the problem of having better controlled smaller particle size distribution, with minimal contaminant contents which can be implemented at an industrial scale.

A nanopowder continuous production device for improving nanopowder collection efficiency is proposed. In one aspect, the device includes a reaction chamber evaporating a raw material using a plasma electrode and a crucible, and a raw material supplier connected to a first side of the reaction chamber and supplying the raw material to the reaction chamber. The device may also include a conveying film moving along a closed loop while capturing and conveying evaporated raw material or crystallized nanopowder at an upper portion in the reaction chamber, and a collector connected to a second side of the reaction chamber and collecting the nanopowder conveyed by the conveying film. The collector may include a first capturer having a scrapper disposed at an end of the conveying film and tensioners elastically supporting the scrapper, and a first side of the scrapper is in close contact with the conveying film.

A nanopowder continuous production device for improving nanopowder collection efficiency is proposed. In one aspect, the device includes a reaction chamber evaporating a raw material using a plasma electrode and a crucible, and a raw material supplier connected to a first side of the reaction chamber and supplying the raw material to the reaction chamber. The device may also include a conveying film moving along a closed loop while capturing and conveying evaporated raw material or crystallized nanopowder at an upper portion in the reaction chamber, and a collector connected to a second side of the reaction chamber and collecting the nanopowder conveyed by the conveying film. The collector may include a first capturer having a scrapper disposed at an end of the conveying film and tensioners elastically supporting the scrapper, and a first side of the scrapper is in close contact with the conveying film.

A soft magnetic nanoparticle comprising an iron aluminide nanoalloy of the DO.sub.3 phase as a core encapsulated in an inert shell made of alumina.