A fiber with metal ions excited by luminous energy and a manufacturing method thereof are provided. The method includes: adding dry copper nanopowder with a particle size not more than 48 nm after mixing to a fiber slurry, to form a first mixed liquid; mixing and stirring the first mixed liquid and an additive, and performing an electrochemical reaction, to form a second mixed liquid, where the additive contains at least one of graphene, Ge ions, and Zr ions; performing energy exciting on the second mixed liquid, to form a mixed material; drying the mixed material, to remove moisture contained in the mixed material; extruding at least one fibril from the mixed material by using a spinning device; passing the at least one fibril through a plurality of rollers and performing stretching; and performing cooling and shaping on at least one stretched fibril, to form a final fiber product.

A method for manufacturing a sintered component includes a step of making a green compact having a relative density of at least 88% by compression-molding a base powder containing a metal powder into a metallic die, a step of machining a groove part having a groove width of 1.0 mm or less in the green compact by processing groove with a cutting tool, and a step of sintering the green compact in which the groove part is formed after the step of forming the groove part.

Process for producing an electronic subassembly by low-temperature pressure sintering, comprising the following steps: arranging an electronic component on a circuit carrier having a conductor track, connecting the electronic component to the circuit carrier by the low-temperature pressure sintering of a joining material which connects the electronic component to the circuit carrier, characterized in that, to avoid the oxidation of the electronic component or of the conductor track, the low-temperature pressure sintering is carried out in a low-oxygen atmosphere having a relative oxygen content of 0.005 to 0.3%.

Provided is a copper-based paste capable of bonding a chip component and a substrate more firmly and obtaining a copper-based bonding material having high thermal conductivity. This copper oxide paste includes copper-containing particles, a binder resin, and an organic solvent. The copper-containing particles contain Cu.sub.2O and CuO. The total amount of copper element constituting Cu.sub.2O and copper element constituting CuO is 90% or more of the copper element contained in the copper-containing particles. The copper-containing particles have a 50% cumulative particle size (D.sub.50) of 0.20-5.0 μm inclusive; the 50% cumulative particle size (D.sub.50) and the 10% cumulative particle size (D.sub.10) satisfy 1.3≤D.sub.50/D.sub.10≤4.9; the 50% cumulative particle size (D.sub.50) and the 90% cumulative particle size (D.sub.90) satisfy 1.2≤D.sub.90/D.sub.50≤3.7, and the BET specific surface area of the copper-containing particles is 1.0 m.sup.2/g to 8.0 m.sup.2/g inclusive.

Provided is an alloyed steel powder for powder metallurgy which has excellent compressibility and can be used to produce a sintered body that obtains improved strength simply by sintering. The alloyed steel powder for powder metallurgy contains Cu: 1.0 mass % or more and 8.0 mass % or less, Mo: more than 0.50 mass % and 2.00 mass % or less, and at least one selected from the group consisting of V: 0.05 mass % or more and 0.50 mass % or less, Nb: 0.02 mass % or more and 0.40 mass % or less, and Ti: 0.02 mass % or more and 0.40 mass % or less, with the balance consisting of Fe and inevitable impurities.

Provided is a bonding sheet using a copper particle that is less prone to deteriorate the sintering property due to oxidation of the copper particle, and can form a dense bonding layer having fewer voids, and can also bond an electronic component and the like with a high bonding strength. A bonding sheet (1) contains a copper particle (2) and a solvent (3) having a boiling point of 150° C. or higher, in which the copper particle (2) has a surface covered with an organic protective film, the content ratio of the copper particle (2) to the solvent (3) is in the range of 99:1 to 90:10 by mass, and the BET diameter of the copper particle (2) is in the range of 50 nm to 300 nm both inclusive.

Copper particles are provided that each include a core particle made of copper and a coating layer that coats the surface of the core particle, wherein the coating layer is made of a copper salt of an aliphatic organic acid. It is also preferable that the copper particles have an infrared absorption peak in a range of 1504 to 1514 cm.sup.−1 and no infrared absorption peak in a range of 1584 to 1596 cm.sup.−1. It is also preferable that, in thermogravimetric analysis of the copper particles, the temperature at which the ratio of the mass loss value to the mass loss value at 500° C. reaches 10% is from 150° C. to 220° C. A method is also provided for producing copper particles, the method including bringing core particles made of copper into contact with a solution containing a copper salt of an aliphatic organic acid to thereby coat the surface of the core particles.

The present disclosure relates to a dispersed metal nanoparticle synthesis method and metal nanoparticles prepared thereby. Specifically, the present disclosure relates to a method of effectively preparing a dispersed metal nanoparticle using Taylor vortex flow even when using a small amount of stabilizer or using no stabilizer, and well-dispersed nanoparticles obtained thereby.

This invention relates to a silver sintering composition. In particular, the present invention relates to a silver sintering composition containing a copper alloy, which is capable of being stably sintered on various metal substrates such as copper, gold or silver with good adhesion and sintering strength.

Provided is a method for producing a sliding member formed by impregnating a porous base member made of a bronze-based alloy with a resin material, the sliding member including a sliding surface where both the porous base member and the resin material are exposed, the method including: a step of preparing a back metal layer; a porous base member formation step of forming the porous base member by depositing particles of the bronze-based alloy on a surface of the back metal layer and sintering the particles; an impregnation step of impregnating the porous base member with the resin material; a deformation step of deforming an end edge of the back metal layer in a direction away from the sliding surface; and a cutting step of cutting the porous base member impregnated with the resin material to form the sliding surface.