PARTICLES HAVING A SINTERABLE CORE AND A POLYMERIC COATING, USE THEREOF, AND ADDITIVE MANUFACTURING METHOD USING THE SAME

Способ получения слоистого кермета Al-Al2O3-Al4C3

Изобретение относится к технологии композиционных материалов – керметов и может быть использовано для получения износостойких и триботехнических изделий, высокотемпературных уплотнительных элементов, а также для изготовления абразивного инструмента. Для получения кермета алюминиевый порошок, состоящий из пластинчатых частиц с покрытием из стеарина (ПАП-2), обрабатывали водой путем интенсивного перемешивания с получением гелеобразного продукта, который высушивали на воздухе при 20–60°С и прессовали. Полученные порошковые заготовки спекали в вакууме путем нагрева до 630-640°С с изотермической выдержкой 15-30 минут с последующим подъёмом температуры до 645–655°С с изотермической выдержкой 45–90 минут. Технический результат изобретения заключается в повышении выхода годных образцов при прессовании, повышении прочности и трещиностойкости спеченного материала. Свойства полученного материала: плотность – 2,60-2,68 г/см3, прочность при изгибе – 550-650 МПа, трещиностойкость – 17-20 МПа·м1/2. 3 ...

ADDITIVE MANUFACTURING METHOD

Injection Molding Powder, Injection Molding Powder Production Method, And Metal Sintered Compact Production Method

An injection molding powder includes a metal powder, and a film with which a particle surface of the metal powder is coated and which contains a fluorine compound, in which a contact angle of hexadecane measured at 25° C. by a θ/2 method is 60° or more and 110° or less in a state in which the injection molding powder is laid in layers.

ADDITIVE FABRICATION OF SINTERABLE METALLIC PARTS VIA APPLICATION OF DIRECTED ENERGY

According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.

IRON PARTICLE PASSIVATION

DUST CORE, METHOD FOR MANUFACTURING DUST CORE, INDUCTOR INCLUDING DUST CORE, AND ELECTRONIC/ELECTRIC DEVICE INCLUDING INDUCTOR

A dust core contains a powder of a crystalline magnetic material powder and a powder of an amorphous magnetic material. The sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 83 mass percent or more. The mass ratio of the content of the crystalline magnetic material powder to the sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 20 mass percent or less. The median diameter D50a of the amorphous magnetic material powder is greater than or equal to the median diameter D50c of the crystalline magnetic material powder. A 10% cumulative diameter D10a in a volume-based cumulative particle size distribution of the amorphous magnetic material powder is 9.5 μm or less.

Copper microparticles

Provided are copper microparticles which have exceptional oxidation resistance, in which oxidation is reduced even when the copper microparticles are held at a firing temperature in an oxygen-containing atmosphere, and in which sintering also occurs. The copper microparticles have a particle diameter of 10-100 nm, have a surface coating material, and are such that, after the copper microparticles are held for one hour at a temperature of 400° C. in an oxygen-containing atmosphere, the particle diameter exceeds 100 nm while a copper state is retained.

METAL MICROPARTICLES, AND DISPERSION LIQUID CONTAINING METAL MICROPARTICLES AND METHOD FOR PRODUCING SAME

ADDITIVE MANUFACTURING POWDER, METHOD FOR PRODUCING SAME, ADDITIVE MANUFACTURED PRODUCT, AND METAL SINTERED BODY

An additive manufacturing powder includes: a metal powder; and a coating film provided on a particle surface of the metal powder and containing a compound derived from a coupling agent having a functional group. The additive manufacturing powder has an average particle diameter of 3.0 µm or more and 30.0 µm or less. The functional group includes a cyclic structure-containing group, a fluoroalkyl group, or a fluoroaryl group.

THIXOMOLDING MATERIAL

A thixomolding material includes: a metal body that contains Mg as a main component; and a coating portion that is adhered to a surface of the metal body via a binder and contains SiC particles containing SiC as a main component. A mass fraction of the SiC particles in a total mass of the metal body and the SiC particles is 2.0 mass % or more and 40.0 mass % or less. The binder may contain waxes. A content of the binder may be 0.001 mass % or more and 0.200 mass % or less.

POWDER FOR MAGNETIC CORE, METHOD FOR MANUFACTURING SAME, AND DUST CORE

Provided is a method for manufacturing a powder for magnetic cores that is able to reduce the iron losses (in particular, hysteresis loss) of dust cores. The present invention provides a method for manufacturing a powder for magnetic cores, comprising: a calcination step for heating a first powder composed of an iron alloy containing Si at 975°C to 1175°C to obtain a calcined body; a cracking step for disintegrating the calcined body to obtain a second powder; and a powder annealing step for annealing the second powder to obtain a third powder. The powder annealing step is performed, for example, by heating the second powder at 550°C to 850°C. The third powder is composed, for example, of soft magnetic particles satisfying an average particle diameter of 50 to 250 µm, an average crystal particle diameter of 30 to 100 µm, and an average particle hardness of 100 to 190 Hv. Such a dust core is suitable, for example, when used in an alternating magnetic field having a frequency of 1 to 3 kHz ...

Surface additive for three-dimensional metal printing compositions

A composition including a three-dimensional metal printing powder; an organic polymeric additive on at least a portion of an external surface of the three-dimensional metal printing powder; and optionally, an inorganic additive on at least a portion of an external surface of the three-dimensional metal printing powder. A process for preparing a three-dimensional metal printing powder having an organic polymeric additive disposed thereon. A process for employing the three-dimensional metal printing powder including selective laser sintering.

Method and apparatus for magnetic nanoparticles development with ultra-small size, uniformity and monodispersity

In an embodiment, the present disclosure pertains to a method of making magnetic nanoparticles through the utilization of a microfluidic reactor. In some embodiments, the microfluidic reactor includes a first inlet, a second inlet, and an outlet. In some embodiments, the method includes applying a magnetic nanoparticle precursor solution into the first inlet of the microfluidic reactor through a first flow rate and applying a reducing agent into the second inlet of the microfluidic reactor through a second flow rate. In some embodiments, the magnetic nanoparticles are produced in the microfluidic reactor and collected from the outlet of the microfluidic reactor. In an additional embodiment, the present disclosure pertains to a composition including a plurality of magnetic nanoparticles. In a further embodiment, the present disclosure pertains to a microfluidic reactor.

POWDER PARTICLES AND PROCESS FOR PRODUCING GREEN BODY USING SAME

Light gold

The present invention relates to novel composite materials comprising elemental gold in the form of single crystals, amyloid fibrils and a polymer. This composite material is similar to glassy plastics yet lighter than aluminum and has a golden shining similar to 18K gold. Due to its unique properties, this composite is termed "light gold". This composite material suits, for example, watches, jewelry, radiation shielding, catalysis and electronics. The invention further provides for environmentally friendly methods to manufacture such composite materials.

SILICON COATED METAL MICROPARTICLES, SILICON COMPOUND COATED METAL MICROPARTICLES, AND PRODUCTION METHOD THEREOF

The present invention relates to silicon coated metal microparticles in which at least a part of a surface of a metal microparticle composed of at least one of metal elements or metalloid elements is coated with silicon, wherein the silicon coated metal microparticles are a product obtained by a reduction treatment of silicon compound coated precursor microparticles in which at least a part of a surface of a precursor microparticle containing a precursor of the metal microparticles is coated with a silicon compound, or silicon doped precursor microparticles containing a precursor of the metal microparticles. Because it is possible particularly to strictly control a particle diameter of the silicon compound coated metal microparticle by controlling conditions of the reduction treatment, design of a more appropriate composition can become facilitated, compared with a conventional composition, in terms of diversified usages and desired properties of silicon compound coated metal microparticles ...

3D printing method

The present application provides a 3D printing method. The present application can provide as a method for efficiently performing 3D printing, for example, a 3D printing method capable of more rapidly and efficiently producing a three-dimensional shape precisely realized up to a fine portion.

Member connection method

This member connection method includes a printing step. In the printing step, a coating film-formed region in which the coating film is formed, and a coating film non-formed region in which the coating film is not formed are formed in the print pattern, and the coating film-formed region is divided into a plurality of concentric regions and a plurality of radial regions by means of a plurality of line-shaped regions provided so as to connect various points, which are separated apart from one another in the marginal part of the connection region.

Method for manufacturing electronic component

An electronic component includes a body made of an insulator, a coating film covering the body, a conductor located in the body, and outer electrodes each of which is connected to the conductor. The insulator contains a magnetic metal powder. The coating film is composed of resin and cations of a metal which is a cationic element contained in the insulator and which has a standard electrode potential E0 of less than about 0 V.

SEMICONDUCTOR PACKAGE AND METHOD FOR MANUFACTURING SAME

FUNCTIONALIZED METAL POWDERS BY SMALL PARTICLES MADE BY NON-THERMAL PLASMA GLOW DISCHARGE FOR ADDITIVE MANUFACTURING APPLICATIONS

Method for manufacturing copper powder, resin composition, method for forming cured product, and cured product

A method of manufacturing copper powder according to the present invention includes: a first step of reducing copper particles in water by using at least one compound selected from the group consisting of potassium borohydride, sodiumborohydride, and lithium borohydride; after the first step, a second step of washing with water; a third step of washing copper powder obtained in the second step with at least one compound selected from the group consisting of ether compounds and alcohol compounds; and a fourth step of bringing the copper powder obtained in the third step into contact with an organic acid solution, in which at least one compound selected from the group consisting of ether compounds and alcohol compounds is used as a solvent.

CELL-MEDIATED SYNTHESIS OF NOBLE METAL OXIDE NANOPARTICLES AND BIOMEDICAL APPLICATIONS THEREOF

LIGHT GOLD

THREE DIMENSIONAL CHIRAL NANOSTRUCTURES

Proposed is a three-dimensional chiral metal nanoparticle, comprising a heterometal nanoparticle including: a seed region formed of a first metal; and a heterogeneous region disposed on an external side of the seed region to enclose the seed region and formed of a second metal. The first metal is gold (Au), and the second metal is palladium (Pd). In a rectangular parallelepiped structure, a rectangular band shape rotates in a clockwise direction or a counterclockwise direction on each surface and protrudes towards a center of the surface.

ADDITIVE MANUFACTURING POWDER AND ADDITIVELY MANUFACTURED OBJECT

An additive manufacturing powder includes: a metal powder; and a film provided on a particle surface of the metal powder and containing a compound derived from a coupling agent having a hydrophobic functional group. An average particle diameter is 3.0 μm or more and 30.0 μm or less, and a water amount is measured by a Karl Fischer method before and after the additive manufacturing powder is subjected to a heat treatment at 200° C. for 24 hours in an air atmosphere, and when the water amount before the heat treatment is set to 1, the water amount after the heat treatment is 0.85 or more and 1.15 or less in terms of mass ratio.

Metallic build material granules

A metallic build material granule includes a plurality of primary metal particles and a temporary binder agglomerating the plurality of primary metal particles together. The primary metal particles have a primary metal particle size ranging from about the 1 μm to about 20 μm. The primary metal particles are non-shape memory metal particles, and the metallic build material granule excludes shape memory metal particles.

Nano copper paste and film for sintered die attach and similar applications

A sintering powder comprising copper particles, wherein: the particles are at least partially coated with a capping agent, and the particles exhibit a D10 of greater than or equal to 100 nm and a D90 of less than or equal to 2000 nm.

PLASTICIZING DEVICE FOR A THREE-DIMENSIONAL SHAPING APPARATUS

Composition and method

A composition comprising kale extract and extract from at least one of artichoke, red cabbage, oregano, rosemary, sage, watercress, dog rose, mint, thyme, basil and spinach. The composition is used to make metal nanoparticles by reducing metal ions. The metal can be a salt of a chloride, sulphate, carbonate, gluconate or acetate and can be gold, silver, copper, nickel, platinum, iron, zinc, gadolinium, titanium, manganese, aluminium, zirconium, chromium, palladium or cobalt. Apparatus for forming the composition and metal nanoparticles comprise a drying unit 10 into which plant mixture is fed. Dried plants are fed into a blender 28 where they are powdered and fed into a leaching unit 32. Active ingredients are leached from the plants using water while being heated and stirred. Leachate is removed, decanted 44, filtered 54, centrifuged 60 and then fed into a reactor 66 where it is combined with a solution comprising metal ions. Metal nanoparticles are then separated using a centrifuge 72 ...

METAL MAGNETIC POWDER, COMPOSITE MAGNETIC BODY, AND ELECTRONIC COMPONENT

A metal magnetic powder includes Co as a main component, and the metal magnetic powder includes metal nanoparticles having a mean particle size (D50) of 1 nm or more and 100 nm or less. Each of the metal nanoparticles includes hcp-Co as a main phase, and the metal magnetic powder includes at least one amphoteric metal.

Anisotropic bonded magnet and preparation method thereof

An anisotropic bonded magnet and a preparation method thereof are provided. By stacking magnets having different magnetic properties and/or densities, the magnets in the middle have high properties and the magnets at two ends and/or the periphery have low properties, thereby compensating for a property deviation caused by a difference in pressing densities during a pressing process, and improving the property uniformity of the magnets in an axial direction. The method solves the problem of “low in the middle and high at two ends” caused by the phenomenon of non-uniform magnetic field orientation and density along a height direction during orientation and densification.

Method for making a metal part with a complex geometry with a thin wall

A method for producing a thin-walled metal part with complex geometry includes mixing a metal powder with a polymer binder in order to obtain a composite mixture, producing a flexible composite sheet from the composite mixture, cutting, in the flexible composite sheet, a preform based on a contour of the metal part, applying the preform in a mold having a surface configured with a relief of the metal part, and debinding and sintering the preform in order to obtain the metal part.

PROCESS FOR THE PREPARATION OF TRANSITION METAL NANOPARTICLES

SILVER PARTICLE COATING COMPOSITION

Nanoparticles for use in anti pathogenic applications

A dispersible nanoparticle 200 comprises a core 210 made of a metal or a metal alloy compound coated with at least one of a carboxylic acid and a water-soluble polymer 220. The core may comprise zinc, copper, a rare earth compound or a lanthanide such as cerium. The core may be combined with an oxygen-based non-metallic compound, such as oxygen or an anion such as a carbonate ion, nitrate, nitrite or hydroxide. The coating may include an organic compound selected from an amino and a peptide. The organic compound may comprise a carboxyl, hydroxyl or an amine functional group for bonding to the core by electrostatic bonding. A nanoparticle dispersion comprises a concentration of said nanoparticles and may have anti-viral, anti-bacterial or anti-parasitic properties. A membrane coated with said dispersible nanoparticles may be used in a face mask or an air filter of an air conditioning unit. A method of coating said membrane comprises dipping the membrane in the nanoparticle dispersion or ...

Metal hydride nanoparticles

A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.

MANUFACTURING METHOD OF THERMAL PASTE

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.

BONDING SHEET

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.

Polarity inversion of gold nanorod materials

A method for preparing an anhydrous nanoparticle dispersion, comprising providing an aqueous medium comprising a surfactant and a quantity of surfactant-coated nanoparticles suspended in the aqueous medium; (i.) estimating an average particle length and an average particle diameter of the surfactant-coated nanoparticles suspended in the aqueous medium, and estimating a quantity of the surfactant-coated nanoparticles in the aqueous medium; estimating a surface area (SA) of the surfactant-coated nanoparticles in the aqueous medium based on the average particle length and the average particle diameter and the quantity of the surfactant-coated nanoparticles; adjusting a ratio of the quantity of the surfactant-coated nanoparticles to a quantity of the surfactant to a desired value to form a precursor aqueous solution; diluting the precursor aqueous solution with an organic solvent to provide a suspension of surfactant-coated nanoparticles in the solvent, and heating the suspension at about 100 ...

Forming apparatus and method for producing formed body

A forming apparatus capable of producing an inorganic material-containing formed body having improved quality and a method of making the same are provided herein. In some embodiments, a forming apparatus includes a stage, a supply unit configured to intermittently or continuously supply a precursor including an inorganic material onto the stage, a heat source unit including a heat source for thermal solidification to perform thermal solidification of the precursor supplied to the stage from the supply unit, and a control unit configured to control the supply unit and the heat source unit such that the heat source for thermal solidification performs thermal solidification of the precursor on the stage, during a period ranging from the start of the supply of the precursor by the supply unit to the stop of the supply of the precursor, to form a formed body.

COPPER PARTICLES AND METHOD FOR PRODUCING SAME

There are provided copper particles, in which a surface of a core particle consisting of metallic copper is coated with an organic protective film formed from an organic molecule derived from copper carboxylate, a total concentration of metal impurities having an oxidation reduction potential lower than that of copper is less than 10 ppm by mass, and an average particle diameter of the copper particles in a state where the copper particles are primary particles is more than 50 nm and 200 nm or less. When the copper particles are analyzed using a time-of-flight secondary ion mass spectrometry (TOF-SIMS), an amount of detected CuC2O2H− ions is in a range of 0.02 times or more with respect to an amount of detected Cu+ ions, and an amount of detected C2H3O2− ions is in a range of 0.02 times or more with respect to the amount of the detected Cu+ ions.

본드 자석용 콤파운드, 성형체, 및 본드 자석

... 본드 자석의 기계적 강도(예를 들면, 압괴 강도)를 높이는 본드 자석용 콤파운드가 제공된다. 본드 자석용 콤파운드는, 자성 분말, 에폭시 수지, 경화제, 커플링제, 및 금속염을 구비하며, 금속염은, R2M으로 나타나고, R은, 탄소수가 6 이상 10 이하인 포화 지방산기이며, M은, Ca 및 Ba 중 적어도 1종의 금속 원소이다.

Photonic crystals comprising nanoparticles and spacer groups

Provided herein are methods of preparing three-dimensional photonic crystals having tunable optical properties and control over stopband location and width, the three-dimensional photonic crystals comprising nanoparticles and spacer groups.

METHOD FOR MAKING PYROTECHNIC MATERIAL AND RELATED TECHNOLOGY

A method for making a pyrotechnic composition in accordance with an embodiment of the present technology includes flowing metal powder, polytetrafluoroethylene powder, and binder powder in separate respective feed streams toward an extruder. The binder powder includes adhesive material and polytetrafluoroethylene anticaking material coating the adhesive material. The method further includes interspersing the metal powder, the binder powder, and the fluoropolymer powder to form a mixture. This mixture is then subjected to an extrusion process during which the anticaking material coating the adhesive material is disrupted. This releases the adhesive material to bind together the metal powder and the polytetrafluoroethylene powder in the extrudate. The powder mixture includes no solvent at any time between being formed and being extruded, yet the extrudate is well-mixed and cohesive.

Preparation method of silver nanowire with circular cross section

Embodiments of the present application provide a preparation method of a silver nanowire with a circular cross section, which relates to the field of nanometre material technologies. In the embodiments of the present application, by heating a mixed solution of the silver nanowire with the pentagonal cross section, the reducing sugar, the oxygen reducing agent and the water, an unstable silver nanowire with the pentagonal cross section are transformed into a stable silver nanowire with the circular cross section, and then the risk that a transparent conductive films based on the silver nanowires lose conductivity is avoided. In addition, in terms of an optical performance testing, compared to conductive films based on the silver nanowires with the pentagonal cross section, conductive films based on the silver nanowires with the circular cross section have significantly reduced a haze.

SILVER SINTERING COMPOSITION CONTAINING COPPER ALLOY FOR METAL BONDING

SYNTHESIS OF FUNCTIONALISED GOLD NANOPARTICLES AND NANOCOMPOUNDS CONTAINING SAME FOR MEASURING SUCROSE OR STARCH IN CELLS

STABLE UNDERCOOLED METALLIC PARTICLES FOR ENGINEERING AT AMBIENT CONDITIONS

PASTE COMPOSITION, SEMICONDUCTOR DEVICE, ELECTRICAL COMPONENT AND ELECTRONIC COMPONENT

A paste composition including first copper particles, wherein the first copper particles are formed by covering copper particles serving as a base material with at least one type of compound selected from the group consisting of an amine compound (a) and a carboxylic acid amine salt (b), and a total content of the amine compound (a) and the carboxylic acid amine salt (b) detected in the paste composition is less than 1 mass % of an entire amount of the paste composition.

High frequency low loss magnetic core and method of manufacture

A high saturation, low loss magnetic material suitable for high frequency electrical devices, including power converters, transformers, solenoids, motors, and other such devices.

METHOD AND APPARATUS FOR THE ADDITIVE MANUFACTURING OF A WORKPIECE

COPPER NANOCLUSTERS, COMPOSITION COMPRISING THE SAME, AND TREATMENT OF NEURODEGENERATIVE DISEASES

Treatment of neurodegenerative diseases with copper nanoclusters (CuNCs), where the neurodegenerative diseases include Alzheimer's disease (AD), Parkinson's disease (PD), Huntington's disease (HD), amyotrophic lateral sclerosis (ALS), spinocerebellar ataxia (SCA), and glaucoma.

SINTERING POWDER

A sintering powder comprising: a particulate having a mean longest diameter of less than 10 microns, wherein at least some of the particles forming the particulate comprise a metal at least partially coated with a capping agent. A sintering paste and sintering film comprising the sintering powder. A method for making a sintered joint by sintering the sintering powder, paste, or film in the vicinity of two or more workpieces. 128-. (canceled)29. A sintering film comprising a sintering powder and a binder , wherein the sintering powder comprises:a particulate comprising heterogeneous particles having a mean longest diameter of less than 10 microns, wherein at least some of the particles forming the particulate comprise a metal at least partially coated with a capping agent,wherein the particulate comprises a first type of particles having a longest diameter of from 1 to 100 nm and a second type of particles having a longest diameter of from greater than 100 nm to 50 microns, andwherein the particulate comprises from 81 to 99 wt % of the first type of particles and from 1 to 19 wt % of the second type of particles.30. The sintering film of wherein the capping agent comprises an amine and/or a carboxylate functional group.31. The sintering film of wherein the capping agent comprises a straight chain or branched chain aliphatic amine.32. The sintering film of wherein the metal comprises one or more metals selected from silver claim 30 , copper claim 30 , nickel claim 30 , molybdenum claim 30 , tungsten claim 30 , and alloys and mixtures thereof.33. The sintering film of comprising from 0.1 to 3 wt % capping agent.34. The sintering film of claim 29 , wherein the first type of particles have a diameter of from 5 to 75 nm and/or the second type of particles have a diameter of from greater than 100 nm to 20 microns.35. The sintering film of claim 33 , wherein the particulate has a mean longest diameter of from 1 to 100 nm.36. The sintering film of claim 33 , wherein the ...

Manufacturing of Workpieces Having Nanostructured Phases from Functionalized Powder Feedstocks

Nano-engineered materials for powder metallurgy and workpieces created using the materials. Workpieces include primary phase powders having nano-engineered partial or complete coatings and/or secondary phases adhered to interfaces of their constituent materials. Nano-engineered coatings are provided for metallic, polymeric and/or ceramic powder metallurgy feedstock powders to produce workpieces with superior performance and/or functional benefits, as are methods of manufacturing injection molding and additive manufacturing feedstock powders containing these coatings and additional respective functional benefits.

Additive manufacturing powder particle, method for treating the additive manufacturing powder particle, and method for additive manufacturing

An additive manufacturing powder particle including a surface and at least one functional group formed on the surface, wherein the at least one functional group increases laser energy absorption of the additive manufacturing powder particle. The additive manufacturing particle is treated with plasma radiation to form hydroxyl functional groups on a surface of the additive manufacturing powder particle, where the hydroxyl functional groups have a molecular vibrational frequency corresponding to a laser wavenumber range of laser energy of an additive manufacturing process, and where the plasma radiation treating the additive manufacturing powder particles depends on the laser energy of the additive manufacturing process. Treating the additive manufacturing powder particle with the plasma radiation increases laser energy absorption of the additive manufacturing powder particle when the additive manufacturing particle is exposed to the laser energy, produced by a carbon dioxide laser, of the ...

COPPER PASTE

Provided is a copper paste containing a copper powder and an organic solvent, wherein the organic solvent is an alcohol-based solvent containing one or more first alcohols selected from the group consisting of monohydric and dihydric alcohols having a viscosity at 20° C. of 30-70 mPa·s, and one or more second alcohols selected from the group consisting of dihydric and trihydric alcohols having a viscosity at 20° C. of 300-1000 mPa·s.

미립자의 제조 방법

... 미립자의 표면 성질의 하나인 산성도를 컨트롤가능한 미립자의 제조 방법 및 미립자를 제공한다. 미립자의 제조 방법은 원료의 분말을 이용하여 기상법에 의해 미립자를 제조한다. 미립자의 제조 방법은 원료 미립자에 유기산을 공급하는 공정을 가진다. 기상법은, 예를 들면, 열 플라즈마법, 또는 화염법이다. 미립자는, 적어도 카복실기를 포함하는 표면 피복물을 가진다.

METHOD FOR MAKING A METAL PART WITH A COMPLEX GEOMETRY WITH A THIN WALL

A metal part with a wall thickness less than 5 mm includes a preform made from a flexible composite sheet, a flexible composite sheet segment, and an appended insert including a fastening portion that is sandwiched between a rear end of the preform and the flexible composite sheet segment. The flexible composite sheet segment encloses the fastening portion of the appended insert.

POWDER FOR MAGNETIC CORE, METHOD FOR MANUFACTURING SAME, AND DUST CORE

A method for manufacturing a powder for magnetic cores includes: a calcination step for heating a first powder composed of an iron alloy containing Si at 975° C. to 1175° C. to obtain a calcined body; a cracking step for disintegrating the calcined body to obtain a second powder; and a powder annealing step for annealing the second powder to obtain a third powder. The powder annealing step is performed, for example, by heating the second powder at 550° C. to 850° C. The third powder is composed, for example, of soft magnetic particles satisfying an average particle diameter of 50 to 250 μm, an average crystal particle diameter of 30 to 100 μm, and an average particle hardness of 100 to 190 Hv. Such a dust core is suitable, for example, when used in an alternating magnetic field having a frequency of 1 to 3 kHz.

MEMBER CONNECTION METHOD BY MEANS OF A COPPER SINTERED FILM WITH A PLURALITY OF RADIALLY ARRANGED REGIONS AND A PLURALITY OF CONCENTRICALLY ARRANGED REGIONS

A member connection method for connecting a first member and a second member by means of a copper sintered compact includes: a printing step of forming a coating film (8) of a copper paste for connection in a connection region (5) of respective members (2) and (3) into a predetermined print pattern (9); a lamination step of laminating the respective members (2) and (3) with the coating film (8) interposed therebetween; and a sintering step of sintering the coating film (8) to form a copper sintered compact (4) and connecting the respective members (2) and (3) by means of this copper sintered compact (4), in which in the printing step, a coating film-formed region (10) in which the coating film (8) is formed and a coating film non-formed region (20) in which the coating film (8) is not formed are formed in the print pattern (9), and the coating film-formed region (10) is divided into a plurality of radial regions (12a) to (12c) and a plurality of concentric regions (13a) and (13b) by means ...

Covered particle

The present invention provides covered particles wherein insulating layers cover the surfaces of electroconductive particles, and the covered particles are excellent in the adhesion between the surfaces of the electroconductive particles and the insulating layers. The covered particles includes: electroconductive particles in which metal films are formed on the surfaces of core materials, and a triazole-based compound is disposed on the outer surfaces on the sides opposite to the core materials in the metal films; and insulating layers covering the electroconductive particles, and the insulating layers comprise a compound having phosphonium groups.

OXIDE PARTICLES WITH CONTROLLED COLOR CHARACTERISTICS, AND COATING COMPOSITION OR FILM-LIKE COMPOSITION CONTAINING SAID OXIDE PARTICLES

With an aim to provide an oxide particle with controlled color characteristics, the present invention provides a method for producing an oxide particle, wherein the color characteristics of the oxide particle are controlled by controlling a M-OH bond/M-O bond ratio, which is a ratio of a M-OH bond between an element (M) and a hydroxide group (OH) to a ratio of an M-O bond between the element (M) and oxygen (O), where the element (M) is one or plural different elements other than oxygen or hydrogen included in the oxide particle selected from metal oxide particles and semi-metal oxide particles. According to the present invention, by controlling the M-OH bond/M-O bond ratio of the metal oxide particle or the semi-metal oxide particle, the oxide particle with controlled color characteristics of any of reflectance, transmittance, molar absorption coefficient, hue, and saturation can be provided.

COMPOSITE MATERIAL

The present invention is a composite material containing: a resin α including an aromatic dicarboxylic acid monomer unit A having a hydrophilic group and a dicarboxylic acid monomer unit B having no hydrophilic group; a resin β that is a resin other than the resin α; and metal compound particles γ, wherein a content of the metal compound particles γ is 50 parts by mass or more and 500 parts by mass or less with respect to 100 parts by mass of a total content of the resin α and the resin β. According to the present invention, it is possible to provide a composite material that has high moisture resistance and enables obtaining a composite material molded body from which a resin can be removed with neutral water, a method for producing a three-dimensional object using the composite material, and a method for producing a metal-compound three-dimensional object including little residual organic matter.

Three dimensional chiral nanostructures

A three-dimensional chiral nanostructure according to an embodiment of the present invention comprises: metal nanoparticles having a chiral structure: and a coating layer enclosing the metal nanoparticles. The metal nanoparticle is formed in a polyhedral structure having an R region and an S region in which atoms are arranged clockwise and counterclockwise, respectively, in the order of (111), (100), and (110) crystal faces on the basis of the chiral center, wherein at least a portion of the edges form a curve tilting and extending from the R or S region so that the metal nanoparticle has a chiral structure.

METHOD FOR MANUFACTURING MAGNET POWDER AND MAGNET POWDER

BIMETALLIC FLUORESCENT NANOCOMPOSITES FOR CANCER THERANOSTICS

Fluorescent bimetallic nanocomposites (M1@M2-NCs) of silver-gold (Ag@Au-NC) and silver-platinum (Ag@Pt-NC) are prepared by reducing silver nitrate (AgNO3) on gold nanoparticles (AuNPs) and platinum nanoparticles (PtNPs) using sodium borohydride (NaBH4) at alkaline pH=11, in the presence of a lysozyme that acts as a template, and in the presence of a capping and stabilizing agent. The biocompatible bimetallic nanocomposites (M1@M2-NCs) have promising multifunctional applications (cell imaging, bio-sensing, therapeutics) observed by both in vitro as well as in vivo experiments. The fluorescent bimetallic nanocomposites (M1@M2-NCs) of silver-gold (Ag@Au-NC) and silver-platinum (Ag@Pt-NC) may be useful as an alternative nanomedicine in cancer theranostics applications.

SINGLE- AND MIXED-METAL NANOPARTICLES, NANOPARTICLE CONJUGATES, DEVICES FOR MAKING NANOPARTICLES, AND RELATED METHODS OF USE

Nanoparticles, nanoparticle conjugates, devices for making nanoparticles and nanoparticle conjugates, and related methods of use and synthesis are described.

METHOD OF MANUFACTURING MODELED BODY, METHOD OF MODELING SOLIDIFIED OBJECT, AND MODELED BODY

A method of manufacturing a modeled body includes: modeling including applying a modeling solution (10) to each layer of powder (20) laid in a layer, to solidify the powder to model a solidified object (100); sintering the solidified object (100) to obtain a sintered body (100S) of the solidified object (100); and removing a sacrificial body (102) from the sintered body (100S), to obtain a modeled body (101). At the modeling, the modeling solution (10) is applied to a modeled body area in the solidified object (100) and a border area in the solidified object (100) such that, after the modeling solution (10) is applied, a density of the powder at the border area is smaller than a density of the powder in the modeled body area. The modeled body area corresponds to the modeled body (101). The border area corresponds to a border (103) between the modeled body (101) and the sacrificial body (102) .

Electronic paste composition, preparation method therefor and use thereof

The present disclosure provides an electronic paste composition and a preparation method thereof. The electronic paste composition includes tungsten, manganese, an additive, and an organic vehicle, wherein the additive is selected from at least one of ruthenium, tellurium, germanium, and vanadium. The preparation method includes: mixing tungsten powder and manganese powder with the additive, and then bringing a mixture as acquired into contact with the organic vehicle. In addition, the present disclosure further provides a use of the electronic paste composition in preparing a ceramal heat generation body having a low temperature coefficient of resistance. Each of the electronic paste composition according to the present disclosure and the electronic paste prepared by the method according to the present disclosure has a consistent and low temperature coefficient of resistance.

Powder mixture for powder metallurgy and method for producing powder mixture for powder metallurgy

Provided is a powder mixture for powder metallurgy that has excellent fluidity, can be ejected from a green compacting die with little force, and can suppress die galling in forming. The powder mixture comprises: a raw material powder; a copper powder; a binder; a graphite powder; and carbon black. The raw material powder contains an iron-based powder in an amount of 90 mass % or more with respect to the raw material powder. An average particle size of the graphite powder is less than 5 μm. Additive amounts of the binder, the graphite powder, the copper powder, and the carbon black are in specific ranges. A surface of the raw material powder is coated with at least part of the binder. A surface of the binder is coated with at least part of the graphite powder, at least part of the copper powder, and at least part of the carbon black.

OXIDE-CONTAINING COPPER FINE PARTICLES, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING SINTERED COMPACT USING OXIDE-CONTAINING COPPER FINE PARTICLES

Disclosed is oxide-containing copper fine particles including Cu64O and optionally Cu2O and coated with a carboxylic acid, wherein a mass ratio of Cu64O to a total mass of Cu, Cu64O and Cu2O is 0.5 to 2.0% by mass.

COMPOSITIONS AND METHODS FOR THREE-DIMENSIONAL PRINTING

PASTE COMPOSITION, SEMICONDUCTOR DEVICE, ELECTRICAL COMPONENT AND ELECTRONIC COMPONENT

A paste composition including first copper particles, wherein the first copper particles are formed by covering copper particles serving as a base material with at least one type of compound selected from the group consisting of an amine compound (a) and a carboxylic acid amine salt (b), and a total content of the amine compound (a) and the carboxylic acid amine salt (b) detected in the paste composition is less than 1 mass% of an entire amount of the paste composition.

Dust core, method for manufacturing dust core, inductor including dust core, and electronic/electric device including inductor

A dust core contains a powder of a crystalline magnetic material powder and a powder of an amorphous magnetic material. The sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 83 mass percent or more. The mass ratio of the content of the crystalline magnetic material powder to the sum of the content of the crystalline magnetic material powder and the content of the amorphous magnetic material powder is 20 mass percent or less. The median diameter D50 of the amorphous magnetic material powder is greater than or equal to the median diameter D50 of the crystalline magnetic material powder.

Stable undercooled metallic particles for engineering at ambient conditions

Undercooled liquid metallic core-shell particles, whose core is stable against solidification at ambient conditions, i.e. under near ambient temperature and pressure conditions, are used to join or repair metallic non-particulate components. The undercooled-shell particles in the form of nano-size or micro-size particles comprise an undercooled stable liquid metallic core encapsulated inside an outer shell, which can comprise an oxide or other stabilizer shell typically formed in-situ on the undercooled liquid metallic core. The shell is ruptured to release the liquid phase core material to join or repair a component(s).

COMPLEX, METHOD FOR PRODUCING COMPLEX, DISPERSION, METHOD FOR PRODUCING DISPERSION, AND OPTICAL MATERIAL

SURFACE TREATMENT OF POWDERS

MAGNETIC MATERIAL AND INDUCTOR

A magnetic material includes magnetic particles. When a magnetic particle is rotated by 360/n degrees (n is an any integer equal to or greater than 2) around a gravity center position of the particle in a planar region, an area of the particle after the rotation overlaps with an area of the particle before the rotation by 90% or more. In the planar region, gravity center positions of from nine to eleven particles are present on a band portion in a rectangular shape. For the particles in the planar region, when a number-based 50% cumulative frequency distribution of maximum lengths in a direction passing through respective gravity center positions is defined as α, a 10% cumulative frequency distribution is equal to or greater than 0.9α, and a 90% cumulative frequency distribution is equal to or less than 1.1α. A surface of the particle is covered with an insulating film.

METAL NANOSTRUCTURE PREPARATION METHOD USING GALVANIC REPLACEMENT REACTION, AND METAL NANOSTRUCTURE PREPARED THEREBY

Proposed are a method of preparing a metal nanostructure, which includes (a) preparing a first metal template whose surface is coated with a polymeric micelle containing an amphiphilic polymer and (b) causing the first metal template to react with a second metal ion through a galvanic replacement reaction, and a metal nanostructure prepared thereby. The amphiphilic polymer is used as a capping agent during the replacement reaction so that the micellar polymer is adsorbed onto the template, thereby selectively allowing the replacement reaction. Thus, unlike in existing technologies in which nanostructures having limited forms are prepared, nanostructures having a new two-dimensional structure, including nanostructures having a plurality of pores formed between nanoparticles, can be prepared. Additionally, a mixing ratio of two types of solvents that differ in polarity index is adjustable to control the size of the polymeric micelle, thereby changing the structural characteristics of a finally ...

METHOD FOR PRODUCING OXIDE PARTICLES WITH CONTROLLED COLOR CHARACTERISTICS

With an aim to provide a method for producing an oxide particle with controlled color characteristics and also provide an oxide particle with controlled color characteristics, the present invention provides a method for producing an oxide particle, wherein the color characteristics of the oxide particle are controlled by controlling a ratio of an M-OH bond between an element (M) and a hydroxide group (OH) or an M-OH bond/M-O bond ratio, where the element (M) is one element or plural different elements other than oxygen or hydrogen included in the oxide particle selected from metal oxide particles and semi-metal oxide particles. According to the present invention, by controlling the M-OH bond or the M-OH bond/M-O bond ratio of the metal oxide particle or the semi-metal oxide particle, the oxide particle with controlled color characteristics of any of reflectance, transmittance, molar absorption coefficient, hue, and saturation can be provided.

Metal nanoparticle-decorated nanotubes for gas sensing

Disclosed herein are embodiments of compositions for gas sensing and sensors utilizing the same. In one embodiment, a composition comprises carbon nanotubes and polymer-coated metal nanoparticles bound to the carbon nanotubes.

Particles for chemiresistor sensor

The application discloses a particle for chemiresistor sensor. The particle may include: a nanoparticle core made from a conductive material selected from a group consisting of: Ir, Ir-alloy, IrOx, Ru, Ru-alloy, RuOx and any combination thereof and/or any conducting metallic oxide, having a cross section size of at most 100 nm; and a plurality of organic ligands bonded from one side to the nanoparticle core and capable of interacting with a volatile organic compound.

Methods and compositions for recovery of lithium from liquid solutions with nanoparticles

The present disclosure relates, according to some embodiments, to a method for recovery of lithium ions from a lithium-ion containing liquid, the method comprising the steps of coating a nanoparticle with a styrene monomer; polymerizing the styrene monomer to form a poly-styrene-coated nanoparticle; attaching a dibenzo-12-crown-4-ether to the polystyrene-coated nanoparticle to form a lithium adsorbing medium; exposing the lithium ion-containing liquid to the lithium adsorbing medium to form a lithium-rich adsorbing medium; and extracting the lithium ion from the lithium-rich adsorbing medium.

Composite rare earth anisotropic bonded magnet and a preparation method thereof

The invention discloses a composite rare earth anisotropic bonded magnet and a preparation method thereof. The composite rare earth anisotropic bonded magnet comprises a Nd—Fe—B magnetic powder, a Sm—Fe—N magnetic powder, a binder and an inorganic nano-dispersant. The preparation method comprises steps of preparing a Nd—Fe—B magnetic powder by a HDDR method, preparing a Sm—Fe—N magnetic powder by a powder metallurgy method, mixing the Nd—Fe—B magnetic powder, the Sm—Fe—N magnetic powder, the binder and the inorganic nano-dispersant at a specific ratio to finally obtain the composite rare earth anisotropic bonded magnet. The invention, by adding an inorganic nano-dispersant, enables the full dispersion of the fine Sm—Fe—N powder during the mixing process of the binder, the Nd—Fe—B magnetic powder and the Sm—Fe—N powder, and thus makes the fine Sm—Fe—N powder and the binder evenly coated on the surface of the anisotropic Nd—Fe—B magnetic powder.

POLYMER COATED PARTICULATE COMPOSITIONS AND RELATED METHODS AND APPLICATIONS

Polymer coated particulates may be produced by melt emulsification methods, for example, by mixing a mixture comprising: a carrier fluid, particulates, a thermoplastic polymer, and optionally an emulsion stabilizer at a temperature at or greater than a melting point or softening temperature of the thermoplastic polymer, wherein a mass ratio of the particulates to the thermoplastic polymer is about 1:0.1 to about 1:5; cooling the mixture to below the melting point or softening temperature to form polymer coated particulates; and separating the polymer coated particulates from the carrier fluid.

COPPER PASTE

Provided is a copper paste containing a copper powder and an organic solvent, wherein the organic solvent is an alcohol-based solvent containing one or more first alcohols selected from the group consisting of monohydric and dihydric alcohols having a viscosity at 20°C of 30-70 mPa·s, and one or more second alcohols selected from the group consisting of dihydric and trihydric alcohols having a viscosity at 20°C of 300-1000 mPa·s.

Methods of briquetting precursor materials for prelithiated silicon active materials

A method of making a lithiated silicon-based precursor material for a negative electrode material of an electrochemical cell that cycles lithium ions is provided. An admixture comprising a plurality of lithium particles and a plurality of silicon particles is briquetted by applying pressure of greater than or equal to about 10 MPa and applying heat at a temperature of less than or equal to about 180° C. to form a precursor briquette. The briquette has lithium particles and silicon particles distributed in a matrix and has a porosity level of less than or equal to about 60% of the total volume of the precursor briquette. The briquetting is conducted in an environment having less than or equal to about 0.002% by weight of any oxygen-bearing species or nitrogen (N2).

Metal soft magnetic composite material inductor and preparation method thereof

A preparation method for a metal soft magnetic composite material inductor includes: smelting Fe, Si and Cr and then employing a water atomization or gas atomization means to fabricate an alloy powder; after sifting by particle size, mixing powders of different particle size levels and performing coating insulation, and performing post-granulation to obtain a metal soft composite material granulation powder; adopting the granulation powder to press a material cake, and transferring and molding same; adopting a hollow coil in a liquid-phase coating mold cavity, curing and demolding to obtain a semi-finished product, then continuously heating and curing the semi-finished product, and preparing an end electrode to obtain a finished inductor.

METHOD FOR PRODUCING OXIDE PARTICLES WITH CONTROLLED COLOR CHARACTERISTICS

구리 미립자

... 내산화성이 우수하고, 산소를 포함하는 분위기에서, 소성 온도로 보존유지한 경우에서도 산화가 억제되고, 게다가 또한 소결이 생기는 구리 미립자를 제공한다. 구리 미립자는, 입자지름이 10∼100㎚이고, 표면 피복물을 가지고, 산소를 포함하는 분위기에 온도 400℃에서 1시간 보존유지한 후, 구리의 상태를 유지한 채 입자지름이 100㎚를 넘는 것이다.

PROCESS FOR IMPROVING THE FLEXURAL TOUGHNESS OF MOLDINGS

STABLE UNDERCOOLED METALLIC PARTICLES FOR ENGINEERING AT AMBIENT CONDITIONS

Undercooled liquid metallic core-shell particles, whose core is stable against solidification at ambient conditions, i.e. under near ambient temperature and pressure conditions, are used to join or repair metallic non-particulate components. The undercooled-shell particles in the form of nano-size or micro-size particles comprise an undercooled stable liquid metallic core encapsulated inside an outer shell, which can comprise an oxide or other stabilizer shell typically formed in-situ on the undercooled liquid metallic core. The shell is ruptured to release the liquid phase core material to join or repair a component(s).

Sintered body and method for producing same

A sintered body containing: a plurality of coated grains each having a metal magnetic body grain coated with a resin layer; a plurality of ferrite grains; and an amorphous phase between the plurality of coated grains and the plurality of ferrite grains. The amorphous phase may contain a metal element that is the same as a metal element contained in the ferrite grains.

Soft magnetic material powder and manufacturing method thereof, and magnetic core and manufacturing method thereof

A soft magnetic material powder includes soft magnetic material particles, the soft magnetic material particles each include a core formed from an Fe-based soft magnetic material and an insulating film covering the surface of the core, and the insulating film contains an inorganic oxide and a water soluble polymer. A magnetic core includes soft magnetic material particles and a binder bonding the soft magnetic material particles to each other, the soft magnetic material particles each include a core containing an Fe-based soft magnetic material and an insulating film covering the surface of the core, and the insulating film contains an inorganic oxide and a water soluble polymer.

BONDING PASTE, BONDED LAYER, BONDED BODY, AND METHOD FOR PRODUCING BONDED BODY

To suppress a decrease of strength, a bonding paste (10) includes a copper particle (12), a solvent (14), and an additive (16) composed of a phosphate ester. In the bonding paste (10), a content of the additive (16) is in the range of 0.5% to 3.0% by mass both inclusive relative to a total of the bonding paste (10).

Method for preparing sintered magnet and sintered magnet

A method for preparing a sintered magnet is provided according to one embodiment of the present disclosure. The method includes preparing a mixed powder by coating fluorides on a surface of magnetic powder, adding heavy rare earth hydrides to the mixed powder, and heating the mixed powder, wherein the magnetic powder includes rare earth element-iron-boron-based powder, and the fluorides include at least one of an organic fluoride or an inorganic fluoride.

SILVER SINTERING PREPARATION AND THE USE THEREOF FOR THE CONNECTING OF ELECTRONIC COMPONENTS

METHOD FOR MANUFACTURING DENSE LAYERS THAT CAN BE USED AS ELECTRODES AND/OR ELECTROLYTES FOR LITHIUM ION BATTERIES, AND LITHIUM ION MICROBATTERIES OBTAINED IN THIS WAY

Process, composition and method for anion deposition into ferritin for therapeutic and other use

Provided herein is a process for production of a metal nanoparticle, the process comprising providing a first solution containing a protein nanocage complex comprising a hydrophobic metal core and an ion-transport mechanism, providing a second solution containing a preselected anionic agent, combining the first and second solutions into a third combined solution, and applying an external method to the third combined solution to manipulate the metal core's redox state, in which reduction of the metal core causes the preselected anionic agent to be imported and incorporated into the metal core. Also provided herein is a composition from the process and a method of use.

Coated silver nanoparticles and manufacturing method therefor

The present invention provides coated silver nanoparticles for use as an electrically conductive material capable of sintering at lower temperatures that is able to be used even with flexible printed substrates having low heat resistance, and a manufacturing method therefor. The coated silver nanoparticles of the present invention have a mean particle diameter of 30 nm or less and are coated with protective molecules amine, and are characterized in that the weight loss rate when heated to 160° C. in thermogravimetric measurement is 30% or more. The coated silver nanoparticles of the present invention are also characterized in that a silver-colored sintered film can be formed by sintering at a temperature of 100° C. or lower for 1 hour or less. These coated silver nanoparticles are manufactured by mixing a silver compound that forms metallic silver when decomposed by heating, an alkylamine and an alkyldiamine to prepare a complex compound, and by thermally decomposing the silver compound by heating the complex compound.

Discharge gap filling composition and electrostatic discharge protector

A discharge gap filling composition which includes metal powders (A) and a binder component (B), wherein surfaces of primary particles of the metal powders (A) are coated with a film composed of a metal oxide, and the primary particles of the metal powders (A) have a flake form. An electrostatic discharge protector is obtained using the composition.

Coated conductive particles and method for producing same

[Problem to be Solved] To provide conductive particles which are capable of providing an anisotropically conductive adhesive that can maintain sufficient insulation characteristics and conduction characteristics even when used for the connection of a very small circuit, while having excellent moisture absorption resistance at a lower cost. [Solution] A coated conductive particle ( 5 ) comprises: a composite conductive particle ( 3 ) that has a resin particle ( 4 ) and a metal layer ( 6 ) that covers the resin particle ( 4 ); and insulating fine particles ( 1 ) that are provided on the outer side of the metal layer ( 6 ) so as to partially cover the surface of the metal layer ( 6 ). The metal layer ( 6 ) has a nickel-palladium alloy plating layer ( 6 a ).

Stabilized metal nanoparticles and methods for production thereof

Processes for synthesizing metal nanoparticles, particularly copper nanoparticles, are described. The processes can involve reacting an insoluble complex of a metal salt with a reducing agent in a reaction mixture containing a primary amine first surfactant, a secondary amine second surfactant, and a diamine chelating agent third surfactant. More specifically, processes for forming copper nanoparticles can involve forming a first solution containing a copper salt, a primary amine first surfactant, a secondary amine second surfactant, and a diamine chelating agent third surfactant; allowing an insoluble complex of the copper salt to form from the first solution; combining a second solution containing a reducing agent with the insoluble complex; and forming copper nanoparticles from the insoluble complex. Such copper nanoparticles can be about 10 nm or smaller in size, more particularly about 3 nm to about 6 nm in size, and have a fusion temperature of about 200° C. or lower.

Fine metal particle-containing composition

A fine silver particle-containing composition includes a large number of fine silver particles 2 and a coating layer 4 that covers a surface of each silver particle 2. The silver particle 2 is a so-called nano particle. The silver particle 2 has a scale-like shape. The coating layer 4 consists of an organic compound. The organic compound binds to the silver particle 2. The organic compound suppresses aggregation of the silver particle 2. The composition is in a cake form. A weight ratio of the organic compound with regard to the total amount of the composition is not lower than 2% but not higher than 15%.

Metal powder, ultraviolet ray curable ink jet composition and recorded object

The invention provides metal powder constituted from metal particles. Each of the metal particles comprises a base particle having a surface and a metal material constituting at least the surface of the base particle. The base particle is subjected to a surface treatment with a fluorine type phosphoric acid ester. Further, the invention also provides an ultraviolet ray curable ink jet composition to be ejected by using an ink jet method. The ultraviolet ray curable ink jet composition comprises a polymerizable compound and metal powder constituted from metal particles. The metal particles of the metal powder are subjected to a surface treatment with a fluorine type phosphoric acid ester.

Preparation method of metal nanobelt

This disclosure relates to a method of preparing a metal nanobelt. According to the method, a metal nanobelt having various applicabilities, for example, capable of easily forming a conductive film or a conductive pattern with excellent conductivity, may be easily prepared by a simple process at room temperature and atmospheric pressure. The method comprises reacting a conductive polymer and a metal salt.

Methods for producing nanoparticles and using same

A method for producing nanocomposite particles is provided. The method comprises supplying an organic phase fluid an organic phase fluid, an aqueous phase fluid, an amphiphile, and a plurality of hydrophobic nanospecies to a nozzle. An electric field is generated proximate the nozzle such that the fluid exiting the nozzle forms a cone jet that disperses into a plurality of droplets. The plurality of droplets are collected, and nanocomposite particles comprising a self-assembled structure encapsulating at least one hydrophobic nanospecies form by self-assembly.

Functionally coated non-oxidized particles and methods for making the same.

Air-stable coated particles, which include an oxidizable core having a coating substantially encompassing the oxidizable core, where the coating comprises a first organic ligand and/or a second organic ligand, are disclosed and described. The coated particles can also be substantially free of an oxide layer, especially oxide layers around the oxidizable core. As such, the coating of organic ligand(s) acts as a protective or passivating coating. The air-stable coated particles can be formed via a particle size-reduction process. An oxidizable particulate can be crushed and contacted with a first organic ligand and subsequently with a second organic ligand. The process conditions are maintained such that an oxide layer is preempted from forming on the oxidizable core. Such materials can be effective as high energy density additives for various fuels, pyrotechnic, ionic liquids, and rocket propellant applications and for biomedical applications.

Synthesis of Nanoparticles Using Reducing Gases

Selective gas-reducing methods for making shape-defined metal-based nanoparticles. By avoiding the use of solid or liquid reducing reagents, the gas reducing reagent can be used to make shape well-defined metal- and metal alloy-based nanoparticles without producing contaminates in solution. Therefore, the post-synthesis process including surface treatment become simple or unnecessary. Weak capping reagents can be used for preventing nanoparticles from aggregation, which makes the further removing the capping reagents easier. The selective gas-reducing technique represents a new concept for shape control of nanoparticles, which is based on the concepts of tuning the reducing rate of the different facets. This technique can be used to produce morphology-controlled nanoparticles from nanometer- to submicron- to micron-sized scale. The Pt-based nanoparticles show improved catalytic properties (e.g., activity and durability).

Starting material for a sintered bond and process for producing the sintered bond

The invention relates to a starter material for a sintering compound, said starter material comprising first particles of at least one metal having a first coating which is applied to the first particles and consists of an organic material, and second particles which contain an organic metal compound and/or a precious metal oxide, the organic metal compound and/or the precious metal oxide being converted during heat treatment of the starter material into the fundamental elemental metal and/or precious metal. The invention is characterized in that the second particles have a core of at least one metal and a second coating which is applied to the core and contains the organic metal compound and/or precious metal oxide. Furthermore, the first coating contains a reducing agent by means of which the organic metal compound and/or the precious metal oxide is/are reduced to the elemental metal and/or precious metal at a temperature below the sintering temperature of the elemental metal and/or precious metal.

Lubricant system for use in powder metallurgy

The present invention is directed to metallurgical powder compositions having improved lubricant properties. These compositions of the invention include at least 90 wt. % of an iron-based metallurgical powder; a Group 1 or Group 2 metal stearate; a first wax having a melting range of between about 80 and 100° C.; a second wax having a melting range of between about 80 and 90° C.; inc phosphate; boric acid; acetic acid; phosphoric acid; and polyvinylpyrrolidone. Methods of compacting the compositions, as well as compacted articles prepared using those methods, are also described.

Process for Producing Silver Nanowires and Agent for Controlling Growth of Silver Nanowires

Provided is a process for silver nanowire production in which the major-axis length of the silver nanowires can be controlled in a wide range and an agent for controlling the growth of silver nanowires. A process for silver nanowire production which is characterized in that an agent for controlling the growth of silver nanowires which comprises a polymer obtained by polymerizing one or more polymerizable monomers comprising an N-substituted (meth)acrylamide is reacted with a silver compound in a polyol at 25-180° C. The agent for controlling the growth of silver nanowires is characterized by comprising a polymer which has units of an N-substituted (meth)acrylamide as a polymerizable monomer.

Composite soft magnetic material having low magnetic strain and high magnetic flux density, method for producing same, and electromagnetic circuit component

A composite soft magnetic material having low magnetostriction and high magnetic flux density contains: pure iron-based composite soft magnetic powder particles that are subjected to an insulating treatment by a Mg-containing insulating film or a phosphate film; and Fe—Si alloy powder particles including 11%-16% by mass of Si. A ratio of an amount of the Fe—Si alloy powder particles to a total amount is in a range of 10%-60% by mass. A method for producing the composite soft magnetic material comprises the steps of: mixing a pure iron-based composite soft magnetic powder, and the Fe—Si alloy powder in such a manner that a ratio of the Fe—Si alloy powder to a total amount is in a range of 10%-60%; subjecting a resultant mixture to compression molding; and subjecting a resultant molded body to a baking treatment in a non-oxidizing atmosphere.

Composition of silver-conjugated compound composite

A composition of a silver-conjugated compound composite containing (1) a silver-conjugated compound composite containing a silver particle with a Feret diameter of 1,000 nm or less and a conjugated compound having a weight average molecular weight of 3.0×10 2 or more being adsorbed to the silver particles and (2) an ionic compound. The ionic compound may be a compound having a structure represented by the following Formula (hh-1): [Chem. 1] M m′ + a X′ n′− b   (hh-1) wherein M m′+ represents a metal cation, X′ n′− represents an anion, a and b each independently represent an integer of 1 or more, and when M m′+ and X′ n′− are each plurally present, they may be the same as or different from each other.

Particles having a sinterable core and a polymeric coating, use thereof, and additive manufacturing method using the same

Particles each having a sinterable core and a polymeric coating on at least a part of the core, wherein the polymeric coating includes a polymer that can be removed via decomposition by heat, catalytically or by solvent treatment, and wherein the polymeric coating is present in an amount of 0.10 to 3.00% by weight, relative to the total weight of the particles, as well as the use of these particles in an additive manufacturing process such as a powder bed and inkjet head 3D printing process. The particles and the process are able to provide a green part having improved strength and are thus suitable for the production of delicate structures which require a high green strength in order to minimize the risk of structural damage during green part handling.

Core-shell nanoparticles and method for manufacturing the same

Provided are core-shell nanoparticles including a metal nanoparticle core and a shell layer composed of an oxide hybridized with a polyamine containing primary amino groups and/or secondary amino groups, core-shell metal nanoparticles prepared by removing the organic component from the shell layer and including a metal nanoparticle core and a shell layer based on silica, and simple and efficient methods for manufacturing such nanoparticles. Provided are a method for manufacturing a core-shell nanoparticle including performing a sol-gel reaction of an oxide source (C′) in the presence of a metal nanoparticle (A) having thereon a layer of a compound (B) containing a polyamine segment (b1) containing primary amino groups and/or secondary amino groups, a method for manufacturing a core-shell metal nanoparticle further including performing a sol-gel reaction of an organosilane to form a shell layer containing a polysilsesquioxane (D), and nanoparticles prepared by such methods.

Composite soft magnetic powder, composite soft magnetic powder core, and preparation method therefor

The present invention discloses a composite soft magnetic powder core and a preparation method therefor, which belong to the technical fields of soft magnetic materials and preparation thereof. An Fe/Fe 3 O 4 shell layer is generated in situ on surfaces of iron powder particles through a controlled oxidation process, to prepare Fe/Fe 3 O 4 composite soft magnetic powder having a uniform structure. The Fe/Fe 3 O 4 composite soft magnetic powder is mixed with suitable amount of silicone resin, and prepared into a high-performance Fe/Fe 3 O 4 composite soft magnetic powder core by using a powder metallurgy compaction process. Such magnetic powder core has a high density, a high magnetic conductivity, a high magnetic flux density, a low loss, and a high breaking strength, and is useful in a large-power and low-loss application scenario. The present invention has the advantages of being rich in raw material resources, simple in process and environmentally friendly, and being suitable for industrial production.

Bonding material and bonded object produced using same

A bonding material using silver nanoparticles considerably changes in coating-material property in response to a slight change in composition, and the stability thereof has been insufficient for large-amount application. A bonding material which uses silver nanoparticles, meets the requirements for mass printing, attains dimensional stability, and gives a smooth printed surface is provided. The bonding material includes silver nanoparticles which have at least an average primary particle diameter of 1 nm to 200 nm and have been coated with an organic substance having 8 or less carbon atoms, a dispersion medium, and a viscosity modifier composed of an organic substance, and has a viscosity (measured at a shear rate of 15.7 [1/s]) of 100 Pa·s or lower and a thixotropic ratio (measured at a shear rate of 3.1 [1/s]/measured at a shear rate of 15.7 [1/s]) of 4 or lower.

Metal nano particle and method for surface treating the same

Disclosed herein is a method for surface treating metal nano particles, including: surface treating metal nano particles with an alkanol amine containing solution.

Bonding material and bonded product using same

There are provided a bonding material capable of bonding an electronic part to a substrate by means of a silver bonding layer which is difficult to form large cracks even if the cooling/heating cycle is repeated, and a bonded product wherein an electronic part is bonded to a substrate by using the same. In a bonded product wherein a semiconductor chip such as an SiC chip (having a bonded surface plated with silver) serving as an electronic part is bonded to a copper substrate via a silver bonding layer containing a sintered body of silver, the silver bonding layer has a shear strength of not less than 60 MPa and has a crystalline diameter of not larger than 78 nm on (111) plane thereof.

Silicon oxide-coated iron powder, method for producing the same, molded body for inductor using the same, and inductor

A silicon oxide-coated iron powder has a small particle diameter, can achieve high in a high frequency band, and has high insulating property. In a method for producing the powder, a silicon alkoxide is added to a slurry containing iron powder having an average particle diameter of 0.25 μm or more and 0.80 μm or less and an average axial ratio of 1.5 or less dispersed in a mixed solvent of water and an organic material containing water in an amount of 1% by mass or more and 40% by mass or less. Then, a hydrolysis catalyst for the silicon alkoxide is added to perform silicon oxide coating, the method resulting in a silicon oxide-coated iron powder having the high μ′ in a high frequency band and the high insulating property.

PURE COPPER POWDER HAVING Si COATING AND PRODUCTION METHOD THEREOF, AND ADDITIVE MANUFACTURED OBJECT USING SAID PURE COPPER POWDER

A pure copper powder with a Si coating formed thereon, wherein a Si adhesion amount is 5 wtppm or more and 200 wtppm or less, a C adhesion amount is 15 wtppm or more, and a weight ratio C/Si is 3 or less. An object of the present invention is to provide a pure copper powder with a Si coating formed thereon and a production method thereof, as well as an additive manufactured object using such pure copper powder capable of suppressing the partial sintering of the pure copper powder caused by the preheating thereof in additive manufacturing based on the electron beam (EB) method, and suppressing the loss of the degree of vacuum caused by carbon (C) during the molding process.

Composite nanometal paste containing copper filler and joining method

The present invention addresses the problem of providing a composite nanometal paste which is relatively low in price and is excellent in terms of bonding characteristics, thermal conductivity, and electrical property. The present invention is a copper-filler-containing composite nanometal paste that contains composite nanometal particles each comprising a metal core and an organic coating layer formed thereon. The metal paste contains a copper filler and contains, as binders, first composite nanometal particles and second composite nanometal particles which differ from the first composite nanometal particles in the thermal decomposition temperature of the organic coating layer, wherein the mass proportion W1 of the organic coating layer in the first composite nanometal particles is in the range of 2-13 mass %, the mass proportion W2 of the organic coating layer in the second composite nanometal particles is in the range of 5-25 mass %, and these particles satisfy the relationships W1.

Magnetic material and coil component

An object is to provide a magnetic material and coil component offering improved magnetic permeability and insulation resistance, while also offering improved high-temperature load, moisture resistance, water absorbency, and other reliability characteristics at the same time. A magnetic material that has multiple metal grains constituted by Fe—Si-M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe), as well as oxide film constituted by an oxide of the soft magnetic alloy and formed on the surface of the metal grains, wherein the magnetic material has bonding parts where adjacent metal grains are bonded together via the oxide film formed on their surface, as well as bonding parts where metal grains are directly bonded together in areas having no oxide film, and resin material is filled in at least some of the voids generating as a result of accumulation of the metal grains.

Three-dimensional metallic objects having microstructures

Devices, systems, and methods are directed at spreading sequential layers of powder across a powder bed and applying energy to each layer to form a three-dimensional object. The powder can include granules including agglomerations of metallic particles to facilitate spreading the metallic particles in each layer. The energy can be directed to the powder to reflow the granules in each layer to bind the metallic particles in the layer to one another and to one or more adjacent layers to form the three-dimensional object. Thus, in general, the agglomeration of the metallic particles in the granules can overcome constraints associated with metallic particles that are of a size ordinarily unsuitable for flowing and/or a size that presents safety risks. By overcoming these constraints, the granules can improve formation of dense finished parts from a powder and can result in formation of unique microstructures in finished parts.

Metal nanowires, transparent conductive film and method for producing same, dispersion liquid, information input device, and electronic device

Provided are metal nanowires having a high total light transmittivity that efficiently inhibit scattering of external light at a display screen such as a touch panel, and improve black floating prevention (photopic contrast) and electrode pattern non-visibility. Also provided are a transparent conductive film including the metal nanowires, a method for producing the transparent conductive film, a dispersion liquid including the metal nanowires, an information input device including the transparent conductive film, and an electronic device including the transparent conductive film. The metal nanowires include metal nanowire bodies and a colored compound adsorbed onto the metal nanowire bodies. The colored compound is a dye and is adsorbed in an amount of from 0.5 mass % to 10 mass % relative to the metal nanowire bodies.

Titanium sintered body and ornament

A titanium sintered body contains an α-phase and a β-phase as crystal structures, wherein the average grain size of the α-phase in a cross section is 3 μm or more and 30 μm or less, and an area ratio occupied by the α-phase in a cross section is 70% or more and 99.8% or less. In the titanium sintered body, it is preferred that the average aspect ratio of the α-phase in a cross section is 1 or more and 3 or less. It is also preferred that the titanium sintered body contains titanium as a main component, and also contains an α-phase stabilizing element and a β-phase stabilizing element.

Apparatus for manufacturing three dimensional shaped object, and method for manufacturing structure

An apparatus for manufacturing a three dimensional shaped object includes: a manufacturing unit that manufactures a three dimensional shaped object in which a plurality of solidified layers are built up together by repeating to manufacture a solidified layer, which is layered, by performing solidification processing upon a material that is positioned in a region set according to a shape of the three dimensional shaped object that is to be manufactured, to supply a new material upon an upper portion of the solidified layer that has been manufactured, to perform the solidification processing upon the new material and thus to manufacture a new solidified layer; and an inspecting unit that inspects the solidified layer that has already been built up, while the plurality of solidified layers are being built up together.

Complex, method for producing complex, dispersion liquid, method for producing dispersion liquid, and optical material

A complex includes a flat plate-like metal fine particle formed of at least one type of metal or a compound thereof and at least one piece of finely-disintegrated cellulose combined with the flat plate-like metal fine particle. At least a part of each piece of the finely-disintegrated cellulose is incorporated into the flat plate-like metal fine particle, and a remaining part is exposed from a surface of the flat plate-like metal fine particle.

Fine metal particles, dispersion solution containing fine metal particles, and process for the production thereof

Fine metal particles of any one of Ag, Cu or Zn having a dispersing agent that is coordinated on the surfaces thereof, the dispersing agent having an acid value and an amine value which are both in a range of 0 to 20 mgKOH/g (wherein when either the acid value or the amine value is 0, the other one is not 0), and a dispersion solution in which the fine metal particles are dispersed. The fine metal particles and the dispersion solution containing the fine metal particles can be diluted with various kinds of solvents of either the water type or the organic type, and feature excellent dispersion property even after having been diluted.

Conductive material and connected structure

There is provided a conductive material which has a rapid reaction rate and is high in fluxing effect. The conductive material according to the present invention includes a conductive particle having solder at at least an external surface, an anionically hardenable compound, an anionic hardener, and an organic acid having a carboxyl group and having a functional group that is an esterified carboxyl group.

Magnetic composite material and rotating electric machine

The magnetic composite material of the embodiments is a magnetic composite material that includes a magnetic material having a plane at the surface; and a plate-shaped reinforcing material, the magnetic material having a plurality of magnetic bodies having a planar structure and having a magnetic metal phase containing at least one first element selected from the group consisting of iron (Fe), cobalt (Co), and nickel (Ni), and principal surfaces; and an intercalated phase containing at least one second element selected from the group consisting of oxygen (O), carbon (C), nitrogen (N), and fluorine (F). In the magnetic composite material, the principal surfaces are oriented to be approximately parallel to the plane and have the difference in coercivity on the basis of direction within the plane.

Junction and electrical connection

A junction at which at least two conductors are connected together includes a compound region containing Cu, Sn and at least one element selected from the group consisting of Si, B, Ti, Al, Ag, Bi, In, Sb, Ga and Zn. The compound region forms a nanocomposite metal diffusion region with the conductor.

Methods for the photo-initiated chemical vapor deposition (picvd) of coatings and coatings produced by these methods

Methods for producing coatings on substrates are provided. These methods comprise the steps of introducing the substrate in a photo-initiated chemical vapor deposition reactor, introducing a gas precursor in the reactor, irradiating said gas precursor with UV radiation at a given wavelength, thereby at least partly photodissociating the gas precursor, until the coating is formed. In one method, the gas precursor is a mixture comprising carbon monoxide and hydrogen. In another method, the pressure in the react or is between about 0.75 and 1.25 atm and the gas precursor has an absorption cross section of about 5×10 −16 cm 2 /molecule or less at said given wavelength. In another aspect, the substrate is ash.

Bonding material and bonding method employing same

The present invention aims at providing a bonding material having both preferable dispensing properties and preferable bonding properties, and also providing a bonding method employing the bonding material. Provided are: a bonding material comprising fine silver particles having an average primary particle diameter of smaller than or equal to 130 nm, and a crosslinking-type inter-particle distance keeping agent crosslinking between the fine silver particles and keeping a distance between the fine silver particles; and a bonding method employing the bonding material.

Di- or poly-functional electron deficient olefins coated metal powders for solder paste

The present invention relates to cured products of di- or poly-functional electron deficient olefins coated onto at least a portion of a surface of metal powders, such as metal powders used as appropriate in the formation of solder alloys, spheres and pastes.

Metal hydride nanoparticles

A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.

Process for improving the flexural toughness of moldings

Poly-1,3-dioxepane, poly-1,3-dioxolane, polytetrahydrofurane or mixtures thereof are used in molding materials comprising polyoxymethylene or a copolymer containing a majority of oxymethylene units, for improving the flexural toughness of moldings formed from the molding materials.

Composition for metal bonding

Provided is a composition for metal bonding, especially a bonding composition containing metal particles, which is capable of achieving high bonding strength by bonding at a relatively low temperature without the application of a pressure, and which has heat resistance and is thus not susceptible to decrease in the bonding strength due to decomposition or deterioration of a resin component when the service temperature thereof is increased. A bonding composition which is characterized by containing two or more kinds of metal particles having different average particle diameters, an organic component and a dispersant, and which is also characterized in that the particle diameter ratio of the average particle diameter (DS) of metal particles (S) that have the smallest average particle diameter to the average particle diameter (DL) of metal particles (L) that have the largest average particle diameter, namely DS/DL is from 1×10-4 to 0.5.

Continuous plasma carrier coating process and apparatus for preparing same

The disclosure relates to processes of preparing coated carrier particles by means of plasma activation and apparatus for use thereof.

Silver nanoparticles

In the present invention, a fine silver particle has a particle diameter of 65-80 nm and has, on the surface of the particle, a thin film comprising a hydrocarbon compound. The fine silver particle has an exothermic peal temperature of 140-155° C. in differential thermal analysis. If d denotes the particle diameter after firing at a temperature of 100° C. for one hour and D denotes the particle diameter before firing, it is preferable for the fine silver particle to have a particle growth rate, as represented by (d−D)/D (%), of 50% or higher.

Silver nanowires, and production method and dispersion of the same

Silver nanowires coated with, instead of a polymer protective agent such as PVP, an organic protective agent having a smaller molecular weight are provided. The silver nanowires have an average diameter of 100 nm or less and an average length of 5 μm or more, and a thiol having a molecular weight of 75 to 300 is adhered on surfaces of the metal silver. The silver nanowires have a thiol containing one thiol group in the structure adhered thereon. A thiol having only one thiol group (—S—H) in a molecule is a suitable target. Examples thereof include 1-dodecanethiol, 1-decanethiol, 1-octanethiol, 3-mercapto-1,2-propanediol, monoethanolamine thioglycolate, ammonium thioglycolate, and thiomalic acid.

Half-Coating Method For Nanoparticles

The present invention provides a method and a kit for half coating nanoparticles. According to the present invention, nanoparticles can be half coated in a relatively simple and economical process that can replace complicated processes, such as chemical synthesis, of a conventional Janus nanoparticle-preparing method.

Method for making a metal part with a complex geometry with a thin wall

A method for producing a thin-walled metal part with complex geometry includes mixing a metal powder with a polymer binder in order to obtain a composite mixture, producing a flexible composite sheet from the composite mixture, cutting, in the flexible composite sheet, a preform based on a contour of the metal part, applying the preform in a mold having a surface configured with a relief of the metal part, and debinding and sintering the preform in order to obtain the metal part.

Anode material and battery

An object of the present disclosure is to provide an anode material with a high capacity maintenance rate. To achieve the above object, the present disclosure provides an anode material to be used for a battery that contains an aqueous liquid electrolyte, the anode material comprising: a hydrogen storing alloy that reversibly stores and releases hydrogen; wherein the hydrogen storing alloy contains Ti, Cr, and V as main components, and is an alloy that contains a BCC phase as a main phase; a lattice constant of the BCC phase is 3.01 Å or more and 3.10 Å or less; and the Cr content in the hydrogen storing alloy is 20 at % or more.

Stabilized lithium metal powder for li-ion application, composition and process

The present invention provides a lithium metal powder protected by a wax. The resulting lithium metal powder has improved stability and improved storage life.

Nano copper paste and film for sintered die attach and similar applications

A sintering powder comprising copper particles, wherein: the particles are at least partially coated with a capping agent, and the particles exhibit a D10 of greater than or equal to 100 nm and a D90 of less than or equal to 2000 nm.

OBJECT FORMING LIQUID AND OBJECT PRODUCING METHOD

Provided is an object forming liquid containing a resin containing at least one structural unit selected from the group consisting of a structural unit represented by a predetermined structural formula (1) and a structural unit represented by a predetermined structural formula (2), and an organic solvent, and substantially free of water. The object forming liquid is applied to a layer of a powder containing metal particles. 2. The object forming liquid according to claim 1 ,wherein the resin contains the structural unit represented by the Structural formula (1), andthe resin containing the structural unit represented by the Structural formula (1) comprises at least one selected from the group consisting of polyvinyl acetate resins, partially saponified polyvinyl acetate resins, and polyvinyl butyral resins.4. The object forming liquid according to claim 1 ,wherein the resin contains the structural unit represented by the Structural formula (1), andthe organic solvent contains at least one structure selected from the group consisting of an alkoxy group, an ether bond, and an ester bond.5. The object forming liquid according to claim 4 ,wherein the organic solvent is an alkylene glycol dialkyl ether.6. The object forming liquid according to claim 1 ,wherein the resin contains the structural unit represented by the Structural formula (2), andthe organic solvent contains at least one selected from components 1, which are the group consisting of cyclic esters (lactones), cyclic ketones, and alkylene glycol monoalkyl ethers.7. The object forming liquid according to claim 6 ,wherein the organic solvent further contains at least one selected from components 2, which are the group consisting of alkylene glycol dialkyl ethers.8. The object forming liquid according to claim 7 ,wherein a mass ratio (components 1/components 2) of a total amount of the components 1 to a total amount of the components 2 is from 60/40 through 100/0.9. The object forming liquid according to claim 1 ...

Metal hydride nanoparticles

A nanoparticle of a decomposition product of a transition metal aluminum hydride compound, a transition metal borohydride compound, or a transition metal gallium hydride compound. A process of: reacting a transition metal salt with an aluminum hydride compound, a borohydride compound, or a gallium hydride compound to produce one or more of the nanoparticles. The reaction occurs in solution while being sonicated at a temperature at which the metal hydride compound decomposes. A process of: reacting a nanoparticle with a compound containing at least two hydroxyl groups to form a coating having multi-dentate metal-alkoxides.

Covered particle

The present invention provides covered particles wherein insulating layers cover the surfaces of electroconductive particles, and the covered particles are excellent in the adhesion between the surfaces of the electroconductive particles and the insulating layers. The covered particles includes: electroconductive particles in which metal films are formed on the surfaces of core materials, and a triazole-based compound is disposed on the outer surfaces on the sides opposite to the core materials in the metal films; and insulating layers covering the electroconductive particles, and the insulating layers comprise a compound having phosphonium groups.

Powder mixture

A powder mixture of the present invention is characterized in that it comprises: an iron powder or an iron-based alloy powder, wherein a graphite powder is adhered to a surface of the iron powder or the iron-based alloy powder by a binding agent containing a polyolefin wax; and a negatively-charged powder to be mixed with the iron powder or the iron-based alloy powder, and consisting of an iron powder and/or an iron-based alloy powder treated for negatively charging. This enables keeping the good adhering property of a graphite powder in a mixed powder and high flowability as a mixture of the raw material powder.

Surface-Modified Heavy Metal Nanoparticles, Compositions And Uses Thereof

Surface-modified heavy metal nanoparticles, including a heavy metal core and a coating layer, the coating layer having at least one ligand, conjugated to polyethylene glycol, the at least one ligand is selected from N-acetyl cysteine, albumin, cysteine, methionine, glutathione, amino thiols, thio-carboxylic acids, ammonia, amines, diamines or any combination thereof. Compositions including surface-modified heavy metal nanoparticles and uses thereof in treatment and diagnosis of various conditions.

Methods for manufacturing coated metal nanoparticles and a composite material comprising same, use of such a material and device comprising same

A method for preparing coated metal nanoparticles, each nanoparticle comprising a core constituted of at least one metal M and a layer constituted of at least one polymer, the layer coating the metal core. The method comprises the steps: (a 1 ) preparing a solution A comprising the at least one metal M in the form of cations M n+ , n being an integer comprised between 1 and 3, each metal M being a transition metal of atomic number comprised between 21 and 30, a polyol, and a noble metal salt; (a 2 ) preparing a solution B comprising at least one organic monomer of the at least one polymer, in an organic solvent; (b) mixing solutions A and B, this mixture being heated to the boiling temperature of the polyol; and (c) recovering the coated metal nanoparticles.

Method and apparatus for manufacturing a three-dimensional object

Method for manufacturing a three-dimensional object by layer-wise application and selective solidification of a building material with the step of applying a layer of the building material on a building base within a build area and with the step of selectively solidifying the applied layer by solidifying an area of the applied layer which corresponds to the cross-section of the object in the layer in order to produce a solidified area in the layer. The steps of applying and selectively solidifying are repeated until the three-dimensional object is completed. At least once during manufacturing the three-dimensional object, a sub-area that is only a predetermined portion of the solidified area is after-treated. The sub-area is located substantially inside the solidified area.

Bonding material and bonding method using the same

A method of bonding two different substances includes the steps of: applying a bonding material containing a flux component that includes an organic material having at least two carboxyl groups to a bonding surface of a bonding object, disposing an object to be bonded on the bonding material, performing preliminary firing at a preset temperature in a state in which the object to be bonded is disposed, and performing a main firing by heating at a temperature higher than the temperature of the preliminary firing.

Coil component

A coil component includes a magnetic body part and a coil part. The magnetic body part has first and second magnetic layers stacked together alternately in one axis direction, and cover parts covering the first and second magnetic layers from the one axis direction. The coil part has conductor patterns provided on the second magnetic layers. The magnetic body part includes: oblate soft magnetic grain-containing layers extending over the entire range of the magnetic body part in the direction perpendicular to the one axis direction, exposed in the direction perpendicular to the one axis direction, and formed by oblate soft magnetic grains whose thickness direction is oriented in the one axis direction; and spherical grain-containing layers adjoining the oblate soft magnetic grain-containing layers in the one axis direction, and formed by insulative spherical grains.

Powder mixture for powder metallurgy and method for producing powder mixture for powder metallurgy

Provided is a powder mixture for powder metallurgy that has excellent fluidity, can be ejected from a green compacting die with little force, and can suppress die galling in forming. The powder mixture comprises: a raw material powder; a copper powder; a binder; a graphite powder; and carbon black. The raw material powder contains an iron-based powder in an amount of 90 mass % or more with respect to the raw material powder. An average particle size of the graphite powder is less than 5 μm. Additive amounts of the binder, the graphite powder, the copper powder, and the carbon black are in specific ranges. A surface of the raw material powder is coated with at least part of the binder. A surface of the binder is coated with at least part of the graphite powder, at least part of the copper powder, and at least part of the carbon black.

DNA-Nanoparticle Conjugates

The bio-programmable crystallization of multi-component functional nanoparticle systems is described, as well as methods for such bio-programmable crystallization, and the products resultant from such methods. Specifically, the systems disclosed and taught herein are directed to improved strategies for the DNA-mediated self-assembly of multi-component functionalized nanoparticles into three-dimensional order superlattices, wherein the functionalization of the nanoparticles with DNA is independent of either the composition of the material, or the shape of the nanoparticles.

Electroconductive adhesive

Provided is an electroconductive adhesive which is less apt to suffer cracking, chipping, etc. upon sintering and gives sintered objects having excellent mechanical strength. The electroconductive adhesive comprises metallic microparticles which include a protective layer comprising one or more amines and have an average particle diameter of 30-300 nm, the amines comprising a C5-7 monoalkylamine and/or an alkoxyamine represented by the following general formula (1). NH2—R2—O—R1 (1) In the protective layer, the ratio of the C5-7 monoalkylamine and/or alkoxyamine represented by the general formula (1) to one or more amines different therefrom is in the range of 100:0 to 10:90. [In formula (1), R1 represents a C1-4 alkyl group and R2 represents a C1-4 alkylene group.]

Metal Nanoparticles Formed Around A Nucleus and Scalable Processes for Producing Same

Metal nanoparticles and compositions derived therefrom can be used in a number of different applications. Methods for making metal nanoparticles can include providing a first metal salt in a solvent; converting the first metal salt into an insoluble compound that constitutes a plurality of nanoparticle seeds; and after forming the plurality of nanoparticle seeds, reacting a reducing agent with at least a portion of a second metal salt in the presence of at least one surfactant and the plurality of nanoparticle seeds to form a plurality of metal nanoparticles. Each metal nanoparticle can include a metal shell formed around a nucleus derived from a nanoparticle seed, and the metal shell can include a metal from the second metal salt. The methods can be readily scaled to produce bulk quantities of metal nanoparticles.

Method for Preparing Sintered Magnet and Sintered Magnet

A method for preparing a sintered magnet is provided according to one embodiment of the present disclosure. The method includes preparing a mixed powder by coating fluorides on a surface of magnetic powder, adding heavy rare earth hydrides to the mixed powder, and heating the mixed powder, wherein the magnetic powder includes rare earth element-iron-boron-based powder, and the fluorides include at least one of an organic fluoride or an inorganic fluoride.

Electrostatic ink(s)

An electrostatic ink composition is disclosed. The electrostatic ink composition can comprise: a liquid carrier; and particles dispersed in the liquid carrier, wherein the particles comprise a thermoplastic resin, and a metal or metal alloy pigment having a melting of point of less than about 200° C. The metal or metal alloy pigment can have a diameter of from about 0.01 μm to about 50 μm.

Method of producing anisotropic magnetic powder

The present invention relates to a method of producing an anisotropic magnetic powder having good magnetic properties. The method of producing an anisotropic magnetic powder includes: pretreating an oxide containing Sm and Fe by heat treatment in a reducing gas atmosphere to obtain a partial oxide; heat treating the partial oxide in the presence of a reductant at a first temperature of 1000° C. or higher and 1090° C. or lower and then at a second temperature lower than the first temperature and in the range of 980° C. or higher and 1070° C. or lower to obtain alloy particles; and nitriding the alloy particles to obtain an anisotropic magnetic powder.

Method for fabricating hollow metal nano particles and hollow metal nano particles fabricated by the method

The present application provides a method for fabricating hollow metal nano particles and hollow metal nano particles fabricated by the same.

Metal paste and use thereof for the connecting of components

A metal paste contains (A) 75% to 90% by weight of at least one metal that is present in the form of particles comprising a coating that contains, at least one organic compound, (B) 0% to 12% by weight of at least one metal precursor, (C) 6% to 20% by weight of a mixture of at least two organic solvents, and (D) 0% to 10% by weight of at least one sintering aid. 30% to 60% by weight of the solvent mixture (C) consists of at least one 1-hydroxyalkane with 16-20 C-atoms that is non-substituted except for a methyl substitution on the penultimate C-atom.

Conductive paste

An conductive paste comprises inorganic particles having alkylamine with 6 or less of carbon number on at least a portion of a surface, a polymer dispersant having a pigment affinity group in a main chain and/or a plurality of side chains, and, that comprising a polymer with a comb structure having a plurality of side chains constituting a solvation portion, a polymer having a plurality of pigment affinity portions made from a pigment affinity group in the main chain or a straight-chain polymer having a pigment affinity portion made from a pigment affinity group in one terminal of the main chain, a dispersion medium, wherein a weight reduction percentage at the time of heating solid content of the conductive paste from room temperature to 500° C. by thermal analysis is 15% by weight or less.

High-throughput synthesis of metallic nanoparticles

This invention relates to cost-effective methods for synthesizing metallic nanoparticles in high yield using non-dendrimeric branched polymeric templates, such as branched polyethyleneimine. This invention also provides a high-throughput apparatus for synthesizing metallic nanoparticles under conditions that produce less waste than conventional nanoparticle synthesis methods. Also provided are metallic nanoparticles and multi-metallic nanoparticle compositions made by methods and high-throughput apparatus of the invention.

Sintered molybdenum carbide-based spray powder

A sintered spray powder includes from 5 to 50 wt.-% of a metallic matrix, from 50 to 95 wt.-% of a hard material, and from 0 to 10 wt.-% of a wear-modifying oxide, each based on the total weight of the sintered spray powder. The metallic matrix comprises from 0 to 20 wt.-% of molybdenum based on the total weight of the metallic matrix. The hard material comprises at least 70 wt.-% of molybdenum carbide based on the total weight of the hard material. An average particle diameter of the molybdenum carbide in the sintered spray powder is <10 μm, determined in accordance with ASTM E112.

Multi-phase sintering in binder jetting fabrication of metal objects

Devices, systems, and methods are directed to the use of nanoparticles for improving fabrication of three-dimensional objects formed through layer-by-layer delivery of an ink onto a powder of metal particles in a powder bed. More specifically, the ink may include nanoparticles of an inorganic material (e.g., a metal) that undergoes at least one phase change as the three-dimensional objects are heated. This phase change may facilitate achieving more uniform distribution of the inorganic material relative to the metal particles in the three-dimensional objects which, in turn, may improve strength of the three-dimensional objects being fabricated. Further, or instead, improved distribution of the inorganic material may reduce the likelihood of defects associated with subsequent processing of the three-dimensional objects.

Method for storing oxygen absorbing agent

The method for storing an oxygen absorbing agent according to the present invention comprises: providing an oxygen absorbing agent comprising a metal, the metal having been obtained by subjecting an alloy comprising (A) at least one transition metal selected from the group consisting of iron, cobalt, nickel and copper and (B) aluminum to treatment with a basic aqueous solution to elute and remove at least a part of the aluminum (B), the oxygen absorbing agent having a specific surface area of at least 10 m 2 /g as measured by a BET method; and immersing the oxygen absorbing agent in an aqueous solution containing a chelating agent to store the oxygen absorbing agent.

Magnetic core and process for producing same

The present invention provides a magnetic core which can be produced with improved productivity without increasing a material cost and has required magnetic and mechanical properties and a process for producing the same. The magnetic core is produced by compression molding and thereafter thermally hardening iron-based soft magnetic powder having resin films formed on surfaces of particles thereof. The resin film is an uncured resin film formed by dry mixing the iron-based soft magnetic powder and epoxy resin containing a latent curing agent with each other at a temperature not less than a softening temperature of the epoxy resin and less than a thermal curing starting temperature thereof. The iron-based soft magnetic powder having the resin films formed on the surfaces of the particles thereof is compression molded by using a die to produce a compression molded body. The compression molded body having the resin films formed on the surfaces of the particles thereof is thermally hardened at a temperature not less than the thermal curing starting temperature of the epoxy resin.

Metal colloidal solution and method for producing same

The present invention is a metal colloid solution comprising: colloidal particles consisting of metal particles consisting of one or two or more metal(s) and a protective agent bonding to the metal particles; and a solvent as a dispersion medium of the colloidal particles, wherein: a chloride ion concentration per a metal concentration of 1 mass % is 25 ppm or less; and a nitrate ion concentration per a metal concentration of 1 mass % is 7500 ppm or less. In the present invention, adsorption performance can be improved with adjustment of the amount of the protective agent of the colloidal particles. It is preferable to bind the protective agent of 0.2 to 2.5 times the mass of the metal particles.

Ultraviolet-curable inkjet composition and material

An ultraviolet-curable inkjet composition is discharged using an inkjet method. The ultraviolet-curable inkjet composition includes a polymerized compound, and a metal powder including a plurality of particles. The metal powder includes the particles that are surface-processed using an isocyanate compound.

Three-dimensional shaping apparatus and three-dimensional shaped article production method

A three-dimensional shaping apparatus includes a plasticizing section that includes a drive motor, a heater, and a screw rotated by the drive motor and that plasticizes a material to form a shaping material, an ejection section that ejects the shaping material toward a stage, a moving mechanism section that changes a relative position of the ejection section to the stage, a prediction section that predicts a residual service life of the heater from an observation result of a state observation section that observes a state of the heater, and a control unit that controls the plasticizing section and the moving mechanism section to shape a three-dimensional shaped article. The control unit has a first mode in which a temperature of the heater is set to a first temperature and a second mode in which the temperature of the heater is set to a temperature lower than the first temperature, and shapes the three-dimensional shaped article in the first mode when a first residual service life when the temperature of the heater is set to the first temperature exceeds a first value, and shapes the three-dimensional shaped article in the second mode when the first residual service life is equal to or less than the first value.

Metal nanoparticles formed around a nucleus and scalable processes for producing same

Metal nanoparticles and compositions derived therefrom can be used in a number of different applications. Methods for making metal nanoparticles can include providing a first metal salt in a solvent; converting the first metal salt into an insoluble compound that constitutes a plurality of nanoparticle seeds; and after forming the plurality of nanoparticle seeds, reacting a reducing agent with at least a portion of a second metal salt in the presence of at least one surfactant and the plurality of nanoparticle seeds to form a plurality of metal nanoparticles. Each metal nanoparticle can include a metal shell formed around a nucleus derived from a nanoparticle seed, and the metal shell can include a metal from the second metal salt. The methods can be readily scaled to produce bulk quantities of metal nanoparticles.

Additive Manufacturing

A method of additive manufacturing is disclosed, comprising using a powder comprising a first particulate component ( 1 ) with a first mean particle diameter, and a second particulate component ( 2 ) with a second mean particle diameter. The first mean particle diameter is at least twice the second mean particle diameter. The particles ( 2 ) of the second component are bonded to the particles ( 1 ) of the first component, and the first and second components comprise different materials. The powder is deposited.

Method for manufacturing metal/polymer hybrid nanoparticles with narrow size distribution by miniemulsion polymerisation

Method for manufacturing nanoparticles comprising a metallic core coated with a layer of polymer material comprising the following steps: a) preparing a water-in-oil emulsion comprising droplets of an aqueous phase, dispersed in an organic phase, b) adding nanoparticles comprising a metallic core coated with a shell of carbonaceous material, whereby nanoparticles trapped in the droplets are obtained, c) adding precursor monomers of the polymer material, and d) adding a polymerisation initiator, adding the precursor monomers and the polymerisation initiator resulting in polymerisation of the monomers, whereby nanoparticles coated with a layer of polymer material dispersed in the organic phase are obtained.

Composition containing metal powder for three-dimensional printing, three-dimensional printing method using same as raw material, and three-dimensional printing device

The present invention relates to a composition containing a metal powder for three-dimensional printing, a three-dimensional printing method using the same as a raw material, and a three-dimensional printing device, which enable a metal product, which requires high precision as well as high strength, to be produced by a three-dimensional printing technique using a raw material containing a metal powder as a feedstock for three-dimensional printing. In particular, the composition containing a metal powder for three-dimensional printing, according to the present invention, is used as a feedstock supplied to an extrusion head of a three-dimensional printer, and is produced by kneading, pulverizing, and pelletizing the metal powder and a polymer binder.

Production method of rare earth sintered magnet and production device used in the production method

There is provided a production method and a production device for producing each of the rare earth sintered magnet sintered bodies without carrying a mold in a sintering furnace. The method includes feeding an alloy powder into a mold having side walls divided into two or more sections; filling the alloy powder into the mold to prepare a filled molded-body; orienting the alloy powder in the filled molded-body by applying a magnetic field to the filled molded-body to prepare an oriented filled-molded-body; detaching the side walls of the mold from the oriented filled-molded-body and retrieving the oriented filled-molded-body from the mold; and sintering the retrieved oriented filled-molded-body. The filling step and the orienting step are performed at different locations. A pulsed magnetic field can be applied in the orienting step and inside of the mold can be partitioned into a plurality of cavities by partitions.

Powder for Magnetic Member

Provided is a powder suitable for a magnetic member capable of suppressing noise in a frequency range of 100 kHz to 20 MHz. The powder for a magnetic member contains a plurality of particles 2 . The main part of the particle 2 is made of an alloy. The alloy contains B. The content of B in the alloy is 5.0 mass % or more and 8.0 mass % or less. The alloy may further contain one or more elements selected from the group consisting of Cr, Mn, Co, and Ni. The content of these elements is 0 mass % or more and 25 mass % or less. The balance of the alloy is Fe and unavoidable impurities. The alloy contains an Fe 2 B phase. The area percentage of the Fe 2 B phase in the alloy is 20 mass % or more and 80 mass % or less.

Dispersant, metal particle dispersion for electroconductive substrates, and method for producing electroconductive substrate

The present invention is to provide a dispersant which has excellent dispersibility and which is able to inhibit the oxidation of dispersed particles. Disclosed is a dispersant comprising a graft copolymer having a constitutional unit represented by the following general formula (I) and a constitutional unit represented by the following general formula (II): (Symbols shown in the general formulae (I) and (II) are as described in the Description.)

Method for producing silver particles, and silver particles produced by said method

The present invention provides a method for producing silver particles, including the steps of: mixing a thermally decomposable silver compound and an amine compound to prepare a silver-amine complex as a precursor; and heating the silver-amine complex at a heating temperature equal to or higher than the decomposition temperature of the silver-amine complex to precipitate silver particles, the silver compound being silver carbonate, the amine compound being terminated with a primary amino group on at least one end and containing a predetermined hydrocarbon group R with a carbon number of 4 to 10. In the method of the present invention, silver particles with the particle size controlled to fall within the range of 20 nm to 200 nm in terms of an average particle size can be produced.

Methods of forming bodies for earth-boring drilling tools comprising molding and sintering techniques

Methods of fabricating bodies of earth-boring tools include mechanically injecting a powder mixture into a mold cavity, pressurizing the powder mixture within the mold cavity to form a green body, and sintering the green body to a desired final density to form at least a portion of a body of an earth-boring tool. For example, a green bit body may be injection molded, and the green bit body may be sintered to form at least a portion of a bit body of an earth-boring rotary drill bit. Intermediate structures formed during fabrication of an earth-boring tool include green bodies having a plurality of hard particles, a plurality of matrix particles comprising a metal matrix material, and an organic material that includes a long chain fatty acid derivative. Structures formed using the methods of fabrication are also disclosed.

Machine component using powder compact and method for producing same

A machine part having a radial crushing strength of more than 100 MPa is manufactured by: press forming raw material powder containing, as a main raw material, metal powder capable of forming an oxide film, to thereby provide a green compact; and forming the oxide film between particles of the metal powder forming the green compact through steam treatment.

Silicon coated metal microparticles, silicon compound coated metal microparticles, and production method thereof

The present invention relates to silicon coated metal microparticles in which at least a part of a surface of a metal microparticle composed of at least one of metal elements or metalloid elements is coated with silicon, wherein the silicon coated metal microparticles are a product obtained by a reduction treatment of silicon compound coated precursor microparticles in which at least a part of a surface of a precursor microparticle containing a precursor of the metal microparticles is coated with a silicon compound, or silicon doped precursor microparticles containing a precursor of the metal microparticles. Because it is possible particularly to strictly control a particle diameter of the silicon compound coated metal microparticle by controlling conditions of the reduction treatment, design of a more appropriate composition can become facilitated, compared with a conventional composition, in terms of diversified usages and desired properties of silicon compound coated metal microparticles.

Metallic copper fine particles and method for producing the same

Metallic copper fine particles coated with a fatty acid and an ester compound. Also disclosed is an antiviral agent containing the metallic copper fine particles and a method for producing the metallic copper fine particles.

Iron-based powder for powder metallurgy

An iron-based powder for powder metallurgy effectively prevents agglomeration of a lubricant, has excellent flowability, can evenly fill thin-walled cavities, keeps the ejection force after formation low, and does not lower sintered body strength by adhering either or both of an alloy component and a cutting ability improving agent to the surface of iron powder with a binder that has a melting point of 150° C. or lower, adhering carbon black to the surface of the binder, and setting the amount of free binder to 0.02 mass % or less.

Powder for forming three-dimensional object, powder contained container, three-dimensional object producing method, three-dimensional object producing apparatus, and non-transitory recording medium storing program for forming three-dimensional object

Provided is a powder for forming a three-dimensional object, the powder including: a core material; and a sintering additive, wherein the sintering additive is in a state of being at least partially embedded in the core material.

Nanometal-Flake-Graphite Composite And Method Of Manufaturing The Same

The present invention relates to a nanometal-flake graphite composite and a method of manufacturing the same, and more particularly, to a nanometal-flake graphite composite, in which nanometal-flake graphite, in which crystallized nanometal particles are highly densely bonded to the surface of flake graphite, is coated with polydopamine to form a polydopamine coating layer which significantly improves properties such as bonding properties between flake graphite basal planes, adhesiveness with other media, and dispersibility, and a method of manufacturing the nanometal-flake graphite composite.

Composite magnetic body

The present invention provides a composite magnetic body comprising metal particles containing Fe or Fe and Co as a main component, a resin, and voids, wherein an average major axis diameter of the metal particles is 30 to 500 nm, an average aspect ratio of the metal particles is 1.5 to 10, and in a cross section of the composite magnetic body, a percent presence of the voids is 0.2 to 10 area % and an average equivalent circle diameter of the voids is 1 μm or less, and a saturation magnetization of the composite magnetic body is 300 to 600 emu/cm 3 .

Hydride-coated microparticles and methods for making the same

A metal microparticle coated with metal hydride nanoparticles is disclosed. Some variations provide a material comprising a plurality of microparticles (1 micron to 1 millimeter) containing a metal or metal alloy and coated with a plurality of nanoparticles (less than 1 micron) containing a metal hydride or metal alloy hydride. The invention eliminates non-uniform distribution of sintering aids by attaching them directly to the surface of the microparticles. No method is previously known to exist which can assemble nanoparticle metal hydrides onto the surface of a metal microparticle. Some variations provide a solid article comprising a material with a metal or metal alloy microparticles coated with metal hydride or metal alloy hydride nanoparticles, wherein the nanoparticles form continuous or periodic inclusions at or near grain boundaries within the microparticles.

Metal sintering preparation and the use thereof for the connecting of components

A metal sintering preparation containing (A) 50 to 90% by weight of at least one metal that is present in the form of particles having a coating that contains at least one organic compound, and (B) 6 to 50% by weight organic solvent. The mathematical product of tamped density and specific surface of the metal particles of component (A) is in the range of 40,000 to 80,000 cm −1 .

Coated conductive metallic particles

A conductive metallic particle coated with an organometallic compound, a metal salt, an inorganic oxide, an inorganic hydroxide, or a combination thereof, is provided. The invention also provides a process for preparing a coated conductive metallic particle comprising forming an organometallic coating, a metal salt coating, an inorganic oxide coating, an inorganic hydroxide coating, or a combination thereof, on a conductive metallic particle. Specifically, a process for preparing a coated conductive metallic particle, comprising (a) obtaining a mixture of at least one conductive metallic particle and at least one inorganic precursor in water, an organic solvent, or a combination thereof, (b) hydrolysing the inorganic precursor in the mixture, and (c) optionally adding at least one organic compound is provided. The invention also provides a coated a conductive metallic particle prepared by the claimed processes, as well as the use of the coated conductive metallic particle in a composition. A composition comprising the coated conductive metallic particles of the invention, such as an electroconductive composition comprising the coated conductive metallic particles, and an organic vehicle is also provided.

Core-shell nanowire, method of forming core-shell nanowire, and stretchable composite comprising core-shell nanowire

A core-shell nanowire, a method of forming the core-shell nanowire and a stretchable composite comprising the core-shell nanowire are provided. The core-shell nanowire comprises a core comprising a conductive metal and a shell comprising a biocompatible metal. The method of forming the core-shell nanowire comprises a step of forming a core-shell nanowire by carrying out epitaxial growth of a biocompatible metal on a surface of a core comprising a conductive metal. The stretchable composite comprises a first core-shell nanowire/polymer composite comprising first core-shell nanowires and a first polymer, a first insulating layer disposed on the first core-shell nanowire/polymer composite, and a second core-shell nanowire/polymer composite disposed on the first insulating layer and comprising second core-shell nanowires and a second polymer.

Silver paste, and conductive molded article obtained using same

A problem is to provide a silver paste which can produce, without variation in resistivity value, a conductive silver coating film exhibiting resistivity substantially equivalent to the resistance value of bulk silver in low-temperature sintering. The problem is solved by providing a silver paste including a silver nanoparticle aqueous dispersion prepared by using a compound having a polyethyleneimine skeleton as a protective agent, a compound having a functional group reactable with nitrogen atoms in the polyethyleneimine, and at least one compound selected from the group consisting of a compound having an amine functional group and a compound having an amide functional group.

Powder core, electric or electronic component including the powder core and electric or electronic device having the electric or electronic component mounted therein

A powder core includes a compact including a soft magnetic powder, and an outer coating of the compact. The outer coating contains polyethersulfone. An electric or electronic component including the powder core, and an electric or electronic device having the electric or electronic component mounted therein are also provided.

Nanomaterial and method of production of a nanomaterial for medical applications, such as mri or sers

A method for producing nanomaterial product which comprises at least one hybrid nanoparticle Gold-metal-Polymer, the polymer comprising at least one biopolymer, the atoms of metal being linked with the atom of Gold, the metal being chosen among: Gd, Co, Eu, Tb, Ce, Mn, Fe, Zn, Cu, the method being realized in an aqueous solvent, without reactive or stabilizer agent, and presenting a step of reducing: tetrachloroauric acid (HAuCl4) and metal ions, in the presence of the biopolymer, the biopolymer being used as a stabilizer agent.