Methodologies, systems, and devices are provided for producing metal spheroidal powder products. By utilizing a microwave plasma, control over spheriodization and resulting microstructure can be tailored to meet desired demands.

Methodologies, systems, and devices are provided for producing metal spheroidal powder products. By utilizing a microwave plasma, control over spheriodization and resulting microstructure can be tailored to meet desired demands.

Disclosed herein are methods for forming one or more nanoparticles. The methods include depositing a solution comprising a block copolymer and a metal salt into one or more square pyramidal nanoholes formed in a substrate, and annealing the substrate to provide a single nanoparticle in each of the one or more square pyramidal nanoholes.

Disclosed herein are methods for forming one or more nanoparticles. The methods include depositing a solution comprising a block copolymer and a metal salt into one or more square pyramidal nanoholes formed in a substrate, and annealing the substrate to provide a single nanoparticle in each of the one or more square pyramidal nanoholes.

The invention relates to a method to form copper nanoparticles. The method comprises heating a solution comprising a copper precursor comprising at least one neat copper carboxylate in a concentration of at least 0.2 M, a stabilizer comprising an amine in a concentration equal or larger than the concentration of the copper precursor and optionally a solvent to a temperature T1 to form metallic copper. The solution is then heated to a temperature T2, with the temperature T2 being at least 10° C. higher than the temperature T1. The solution is heated from temperature T1 to temperature T2 with an average rate of at least 2 degrees per minute.

The invention further relates to copper nanoparticles obtainable by such method and to formulations comprising such nanoparticles.

The invention relates to a method to form copper nanoparticles. The method comprises heating a solution comprising a copper precursor comprising at least one neat copper carboxylate in a concentration of at least 0.2 M, a stabilizer comprising an amine in a concentration equal or larger than the concentration of the copper precursor and optionally a solvent to a temperature T1 to form metallic copper. The solution is then heated to a temperature T2, with the temperature T2 being at least 10° C. higher than the temperature T1. The solution is heated from temperature T1 to temperature T2 with an average rate of at least 2 degrees per minute.

The invention further relates to copper nanoparticles obtainable by such method and to formulations comprising such nanoparticles.

A sintering composition, consisting essentially of: a solvent; and a metal complex dissolved in the solvent, wherein: the sintering composition contains at least 60 wt. % of the metal complex, based on the total weight of the sintering composition; and the sintering composition contains at least 20 wt. % of the metal of the metal complex, based on the total weight of the sintering composition.

A sintering composition, consisting essentially of: a solvent; and a metal complex dissolved in the solvent, wherein: the sintering composition contains at least 60 wt. % of the metal complex, based on the total weight of the sintering composition; and the sintering composition contains at least 20 wt. % of the metal of the metal complex, based on the total weight of the sintering composition.

The present disclosure provides a preparation method of a metal powder material. An alloy sheet composed of a matrix phase and a dispersive phase with different chemical reactivities is prepared by the rapid solidification technique of alloy melt. Metal powder is prepared by the reaction of the alloy sheet and an acid solution. Please refer to the description for the detailed preparation method. This method is simple in operation, can be used to prepare many kinds of metal powder materials of different shapes and at the nanometer scale, the submicron scale and the micron scale, and has a good application prospect in the fields of catalysis, powder metallurgy and 3D printing.

The present disclosure provides a preparation method of a metal powder material. An alloy sheet composed of a matrix phase and a dispersive phase with different chemical reactivities is prepared by the rapid solidification technique of alloy melt. Metal powder is prepared by the reaction of the alloy sheet and an acid solution. Please refer to the description for the detailed preparation method. This method is simple in operation, can be used to prepare many kinds of metal powder materials of different shapes and at the nanometer scale, the submicron scale and the micron scale, and has a good application prospect in the fields of catalysis, powder metallurgy and 3D printing.