Provided are a power inductor including a body, a base disposed in the body, a coil disposed on the base, a first external electrode connected to the coil, the first external electrode being disposed on a side surface of the body, and a second external electrode connected to the first external electrode, the second external electrode being disposed on a bottom surface of the body and a method for manufacturing the same.

Embodiments described herein relate generally to systems and methods for using nanocrystalline metal alloy particles or powders to create nanocrystalline and/or microcrystalline metal alloy articles using additive manufacturing. In some embodiments, a manufacturing method for creating articles includes disposing a plurality of nanocrystalline particles and selectively binding the particles together to form the article. In some embodiments, the nanocrystalline particles can be sintered to bind the particles together. In some embodiments, the plurality of nanocrystalline particles can be disposed on a substrate and sintered to form the article. The substrate can be a base or a prior layer of bound particles. In some embodiments, the nanocrystalline particles can be selectively bound together (e.g., sintered) at substantially the same time as they are disposed on the substrate.

A process for preparing alloy products is described using a self-sustaining or self-propagating SHS-type combustion process with point-source ignition, preferably a laser, in a pressurized vessel. Binary, ternary and quaternary alloys can be formed with control over polycrystalline structure and bandgap. Methods to tune the bandgap and the alloys formed are described. The alloy products may be doped. Preferably sulfides, tellurides or selenides are formed. Cooling during reaction takes place.

An electromagnetic shielding material that includes a plurality of layers, each layer having a crystal lattice represented by: M.sub.n+1X.sub.n (wherein M is at least one metal of Group 3, 4, 5, 6, or 7; X is a carbon atom, a nitrogen atom, or a combination thereof; and n is 1, 2, or 3), each X is positioned within an octahedral array of M, and at least one of two opposing surfaces of said each layer has at least one modifier or terminal T selected from a hydroxy group, a fluorine atom, an oxygen atom, and a hydrogen atom; and dielectric and/or magnetic nanoparticles carried on a layer surface and/or between two adjacent layers of the plurality of layers.

Provided is a method for producing particles, the method including a particle generating step of forming a product particle flow including target product particles by heating a segmented reaction raw material liquid flow divided into segments by a gas for segmentation under applying pressure at a pressure P.sub.1 (MPa) and at a heating temperature T (° C.) to react the raw material for particle formation to generate the target product particles, in which, at the particle generating step, (V.sub.d/V.sub.c) is 0.200 to 7.00 and the pressure P.sub.1 at the particle generating step is 2.0 times or more a vapor pressure P.sub.2 (MPa) of a solvent at the heating temperature T. According to the present invention, a method for producing particles having a narrow particle size distribution with high production efficiency can be provided.

Provided is a sintered bearing (1), including 3 to 12% by mass of aluminum, 0.05 to 0.5% by mass of phosphorus, and the balance including copper as a main component, and inevitable impurities, the sintered bearing (1) having a structure in which an aluminum-copper alloy is sintered with a sintering aid added to raw material powder, a pore (db, do) in a surface layer portion of the sintered bearing (1) being formed smaller than an internal pore (di).

The use of copper materials as a replacement for the more expensive coinage metals (i.e., silver, gold) in printed circuits has come to the forefront. For printing, the use of nanomaterials has allowed for significant advances through the use of nanoinks. Unfortunately, as the nanoregime is entered, the increased surface area leads to increased reactivity with atmospheric oxygen which results in a reduction in the conductivity of the printed circuits. To overcome this issue, a synthesis method uses a room temperature reduction of a copper organometallic precursor by the simple addition of catechol-based surfactants to prevent oxidation and agglomeration of the final copper nanoparticles. The selection of these catechol-based surfactants is based on non-aqueous solubility, high surface affinity, and anti-oxidative potential as surface ligands.

The present invention relates to a glass powder and a silver-aluminum paste for use on a front of an N-type double-sided solar cell comprising a conductive silver powder, a silicon-aluminum alloy powder, the glass powder and an organic vehicle. The glass powder comprises the following components by weight: 0-50% of PbO, 0-50% of BiO, 5-15% of B.sub.2O.sub.3, 8-9% of SiO.sub.2, 2-3% of Al.sub.2O.sub.3 and 5-15% of ZnO; silicon and aluminum in the glass powder have a mass ratio of 4:1-5:1; the conductive silver powder has a content of 80-90 wt %; the conductive silver powder comprises a nano-silver powder and a silver alloy powder, and the nano-silver powder to the silver alloy powder have a mass ratio of 1:18-1:90.

A manufacturing method of thermal paste is provided. The manufacturing method includes: providing a base material; heating a metal material to a liquid state, to generate a liquid metal material; sieving the liquid metal material to generate a metal powder material; adding a dispersant to the metal powder material and mixing to generate a mixed powder material; and mixing the mixed powder material and the base material.

One object of the present invention is to provide copper fine particles which have sufficient dispersibility when made into a paste and can be sintered at 150° C. or lower, the present invention provides copper fine particles, wherein the copper fine particles have a coating film containing copper carbonate and cuprous oxide on at least a part of the surface thereof, and a ratio between the following Db and the following Dv (Db/Dv) is in a range of 0.50˜0.90, Dv: an average value (nm) of the area equivalent circle diameter of the copper fine particles obtained by acquiring SEM images for 500 or more copper fine particles using a scanning electron microscope, and calculating by image analysis software, Db: a particle size (nm) of the copper fine particles obtained by measuring a specific surface area (SSA (m.sup.2/g)) of the copper fine particles using a specific surface area meter, and calculating by the following formula (1), Db=6/(SSA×ρ)×10.sup.9 . . . (1) in the formula (1), ρ is a density of copper (g/m.sup.3).