Abstract: A method for producing mesoporous platinum nanoparticles without using templating agents is provided. The method involves preparing a solution comprising water, platinum nanoparticle seeds, a platinum salt and a reducing agent, and heating the solution to a temperature between 150° C. and 250° C. at a rate of between 1° C./min and 15° C./min under a pressure of between 5 and 20 atm. The method allows obtaining mesoporous platinum nanoparticles having controlled shape and controlled pore dimensions. The mesoporous platinum nanoparticles are useful as catalysts in chemical precision reactions and for the production of artificial enzymes for diagnostics and nanomedicine applications.

Abstract: Disclosed is an alloyed steel powder for powder metallurgy from which sintered parts that do not contain expensive Ni, or Cr or Mn susceptible to oxidation, that have excellent compressibility, and that have high strength in an as-sintered state can be obtained. The alloyed steel powder for powder metallurgy has: a chemical composition containing Cu: 1.0 mass % to 8.0 mass %, with the balance being Fe and inevitable impurities; and constituent particles in which Cu is present in an precipitated state with an average particle size of 10 nm or more.

Abstract: A cemented carbide including an eta phase and a Ni—Al binder is provided. The Ni—Al binder includes intermetallic y?-Ni3Al -precipitates embedded in a substitutional solid solution matrix of Al and Ni. A weight ratio Al/Ni of between 0.03 to 0.10, wherein a total amount of Ni and Al is between 70 to 95 wt % of the total binder A method of making a cutting tool is also provided.

Abstract: The present invention relates to a process for the production of metal alloy nanoparticles which catalyse the oxygen reduction reaction (ORR) for use in proton exchange membrane fuel cells (PEMFC) or electrolyser cells. In particular, the present invention relates to a process for producing alloy nanoparticles from platinum group metals and other metals under reductive conditions. In particular the present invention relates to a process for producing alloy nanoparticles comprising the steps of mixing a salt of at least one metal, a material comprising a platinum group metal, a nitrogen-rich compound, and optionally a support material, to provide a precursor mixture, and heating said precursor mixture to a temperature of at least 400° C., in the presence of a gas comprising hydrogen (H2), to provide said alloy nanoparticles.

Abstract: An aluminum flake pigment is an aluminum flake pigment including aluminum flakes, wherein the aluminum flakes include small-size aluminum flakes each having a particle size of less than or equal to 1 ?m, and in a microscope image when the aluminum flakes are observed using a scanning electron microscope, a ratio of the number of the small-size aluminum flakes is less than or equal to 35% with respect to the number of a whole of the aluminum flakes.

Abstract: The invention is directed at sputter targets including 50 atomic % or more molybdenum, a second metal element of niobium or vanadium, and a third metal element selected from the group consisting of titanium, chromium, niobium, vanadium, and tantalum, wherein the third metal element is different from the second metal element, and deposited films prepared by the sputter targets. In a preferred aspect of the invention, the sputter target includes a phase that is rich in molybdenum, a phase that is rich in the second metal element, and a phase that is rich in the third metal element.

Abstract: A thin-type two-phase fluid device includes a first plate body, a second plate body and a polymer layer. The first plate body has a first face, a second face and multiple bosses. The bosses are disposed on the first face and raised therefrom. The second plate body has a nanometer capillary layer on one face. The nanometer capillary layer is formed from a mixture of multiple kinds of powders with different sizes. The nanometer capillary layer is attached to a surface of the second plate body opposite to the first face of the first plate body. The polymer layer is selectively connected with the first plate body or the second plate body. The total thickness of the thin-type two-phase fluid device is equal to or smaller than 0.25 mm, whereby the object of thinning the heat dissipation device is achieved.

Abstract: A magnetic core and a coil component with excellent permeability, core loss, DC superimposition property, and withstand voltage. A magnetic core has a metal magnetic powder containing resin including a metal magnetic powder. The metal magnetic powder includes a large size powder, an intermediate size powder, and a small size powder. A particle size of the large size powder is 10 ?m or more and 60 ?m or less. A particle size of the intermediate size powder is 2.0 ?m or more and less than 10 ?m. A particle size of the small size powder is 0.1 ?m or more and less than 2.0 ?m. The large size powder includes a nano crystal. A ratio of the large size powder existing with respect to the metal magnetic powder is 39% or more and 91% or less in terms of an area ratio in a cross section of the magnetic core.

Abstract: A method and apparatus for using a laser to form and release an element of an actuator. The method comprising forming an actuator from sheet stock using a laser, where the actuator is three dimensional; and releasing an element of the actuator from the sheet stock using the laser.

Abstract: Provided are an alloy powder having excellent environmental resistance even in an environment where corrosion and wear are active simultaneously, and an alloy coating using the powder. A Ni—Fe base alloy powder comprising Cr of 15% by mass or more and 35% by mass or less, Fe of 10% by mass or more and 50% by mass or less, Mo of 0% by mass or more and 5% by mass or less, Si of 0.3% by mass or more and 2% by mass or less, C of 0.3% by mass or more and 0.9% by mass or less, B of 4% by mass or more and 7% by mass or less, and a balance of Ni and incidental impurities.

Abstract: The present disclosure relates to an iron-based prealloy powder having excellent strength and processability, and an iron-based alloy powder for powder metallurgy and a sinter-forged member using the same. The iron-based prealloy powder for powder metallurgy according to an embodiment of the present disclosure includes 0.5 to 5.0 wt % of Cu, 0.1 to 0.5 wt % of Mo, and a balance of Fe and other inevitable impurities. A Cu content (Cu %) and a Mo content (Mo %) satisfy the following Relational Equation (1): 0.3×Cu %+3×Mo %?2.7??(1).

Abstract: A soft magnetic powder of the invention has a composition represented by Fe100-a-b-c-d-e-fCuaSibBcMdM?eXf (at %) [wherein M is Nb, W, Ta, Zr, Hf, Ti, or Mo, M? is V, Cr, Mn, Al, a platinum group element, Sc, Y, Au, Zn, Sn, or Re, X is C, P, Ge, Ga, Sb, In, Be, or As, and a, b, c, d, e, and f are numbers that satisfy the following formulae: 0.1?a?3, 0<b?30, 0<c?25, 5?b+c?30, 0.1?d?30, 0?e?10, and 0?f?10], wherein a crystalline structure having a particle diameter of 1 nm or more and 30 nm or less is contained in an amount of 40 vol % or more, and the difference in the coercive force of the powder after classification satisfies predetermined conditions.

Abstract: A tantalum powder, a tantalum powder compact, a tantalum powder sintered body, a tantalum anode, an electrolytic capacitor and a preparation method for tantalum powder. The tantalum powder contains boron element, and the tantalum powder has a specific surface area of greater than or equal to 4 m2/g; the ratio of the boron content of the tantalum powder to the specific surface area of the tantalum powder is 2˜16; the boron content is measured in weight ppm, and the specific surface area is measured in m2/g; Powder that can pass through a ?-mesh screen in the tantalum powder accounts for over 85% of the total weight of the tantalum powder, where ?=150˜170; and the tantalum powder with high CV has a low leakage current and dielectric loss, and good moldability.

Abstract: An example of a composition includes a host metal present in an amount ranging from about 95.00 weight percent to about 99.99 weight percent, based on a total weight of the composition. A flow additive is present in an amount ranging from about 0.01 weight percent to about 5.00 weight percent, based on the total weight of the composition. The flow additive consists of a metal containing compound that is reducible to an elemental metal in a reducing environment at a reducing temperature less than or equal to a sintering temperature of the host metal. The elemental metal is capable of being incorporated into a bulk metal phase of the host metal in a final metal object. The composition is spreadable, having a Hausner Ratio less than 1.25.

Abstract: Anodes made from powder, such as tantalum powder, that is highly spherical is described. Methods to make the anodes are further described.

Abstract: The present disclosure relates to an iron-based prealloy powder having excellent strength and processability, and an iron-based alloy powder for powder metallurgy and a sinter-forged member using the same. The iron-based prealloy powder for powder metallurgy according to an embodiment of the present disclosure includes 0.5 to 5.0 wt % of Cu, 0.1 to 0.5 wt % of Mo, and a balance of Fe and other inevitable impurities. A Cu content (Cu %) and a Mo content (Mo %) satisfy the following Relational Equation (1): 0.3×Cu %+3×Mo %?2.7??(1).

Abstract: A densified, high-strength metallic component is manufactured by: binder jet additive manufacture (BJAM) printing a powder blend to form a printed part; and super solidus sintering the printed part to form the metallic component, which may then be heat treated. The powder blend comprises a blend of water atomized base iron powder and a high-carbon master ferroalloy powder. The high-carbon ferroalloy powder introduces high concentrations of carbon into a powder blend that is readily BJAM printable.

Abstract: Provided is alloyed steel powder having excellent fluidity, formability, and compressibility without containing Ni, Cr, or Si. The alloyed steel powder includes iron-based alloy containing Mo, in which Mo content is 0.4 mass % to 1.8 mass %, a weight-based median size D50 is 40 ?m or more, and among particles contained in the alloyed steel powder, those particles having an equivalent circular diameter of 50 ?m to 200 ?m have a number average of solidity of 0.70 to 0.86, the solidity being defined as (particle cross-sectional area/envelope-inside area).

Abstract: According to embodiments of the present invention, a method of interconnecting nanowires is provided. The method includes providing a plurality of nanowires, providing a plurality of nanoparticles, and fusing the plurality of nanoparticles to the plurality of nanowires to interconnect the plurality of nanowires to each other via the plurality of nanoparticles. According to further embodiments of the present invention, a nanowire network and a transparent conductive electrode are also provided.

Abstract: A method of producing flakes containing nanostructures from a part made of a material. The method includes subjecting the part made of the material to peening by shots driven by ultrasonic energy for a period of time, wherein nano structures form on the surface of the part and, subsequently, damage to the part caused by continued peening of the part by the shots driven by ultrasonic energy results in separation of flakes containing nanostructures from the part made of the material. Nanocrystalline flakes containing fractured surfaces, microcracks, nanograins and nanolamellae. Sensors comprising nanocrystalline flakes containing fractured surfaces, microcracks, nanograins and nanolamellae.

Abstract: The present invention provides a solder alloy, a solder paste, a solder ball, a resin flux-cored solder and a solder joint, both of which has the low-melting point to suppress the occurrence of the fusion failure, improves the ductility and the shear strength, and has excellent heat-cycle resistance. The solder alloy comprises an alloy composition composed of 35 to 68 mass % of Bi, 0.1 to 2.0 mass % of Sb, 0.01 to 0.10 mass % of Ni, and a balance of Sn. The alloy composition may contain at least one of Co, Ti, Al and Mn in total amount of 0.1 mass % or less. The solder alloy may be suitably used for a solder paste, a solder ball, a resin flux-cored solder and a solder joint.

Abstract: A stator configured to rotate of a rotor about a central axis includes a first member having a plurality of first concavity portions located in a circumferential direction at a preset interval, each of first concavity portions having a pair of first inner side face and second inner side face whose a circumferential-directional distance therebetween with respect to the central axis becomes narrow from one radial-directional side towards the other radial-directional side with respect to the central axis; and a plurality of second members, each of which having a first protrusion extending along the first inner side face, a second protrusion extending along the second inner side face, and a teeth portion protruding from the first protrusion and the second protrusion to the other radial-direction side, wherein the plurality of second members are formed to corresponding to the plurality of concavity portions, respectively.

Abstract: The present invention concerns a method of making sintered components made from an iron-based powder composition and the sintered component per se. The method is especially suited for producing components which will be subjected to wear at elevated temperatures, consequently the components consists of a heat resistant stainless steel with hard phases including chromium carbo-nitrides. Examples of such components are parts in turbochargers for internal combustion engines.

Abstract: In various embodiments, metallic alloy powders are utilized as feedstock, or to fabricate feedstock, utilized in additive manufacturing processes to form three-dimensional metallic parts. Such three-dimensional parts are fabricated by providing a powder bed containing particles each comprising a mixture and/or alloy of constituent elemental metals, forming a first layer of the part by (i) dispersing a binder into the powder bed, and (ii) curing the binder, the first layer of the shaped part comprising particles bound together by cured binder, disposing a layer of the particles over the first layer of the part, forming subsequent layers of the part, and then sintering the part.

Abstract: A solar cell of an embodiment includes: a first electrode; a second electrode; a light-absorbing layer interposed between the first electrode and the second electrode; a dot region interposed between the first electrode and the light-absorbing layer, the dot region including dots.

Abstract: A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M1, M2, and Z. M1 is at least one element selected from the group consisting of Ag, Cu, and Au. M2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.

Abstract: Provided is an ink composition used for image formation by an ink jet method. The ink composition includes plate-like metal particles that include a metal element having a standard oxidation-reduction potential nobler than ?1.65 V, that have an average equivalent circle diameter of 10 nm or more and less than 500 nm, and that have an average aspect ratio, which is the ratio of the average equivalent circle diameter to an average thickness, of 3 or more. Also provided are an ink set, an image forming method, and a printed matter.

Abstract: Methods for producing silver nanostructures with improved dimensional control, yield, purity, monodispersity, and scale of synthesis.

Abstract: The present invention relates to a steel powder having a composition containing, in mass %, 0.10?C<0.25, 0.005?Si?0.600, 2.00?Cr?6.00, ?0.0125×[Cr]+0.125?Mn??0.100×[Cr]+1.800 in which the [Cr] represents the value of Cr content in mass %, 0.01?Mo?1.80, ?0.00447×[Mo]+0.010?V??0.1117×[Mo]+0.901 in which the [Mo] represents the value of Mo content in mass %, 0.0002?N?0.3000, and the balance being Fe and unavoidable impurities.

Abstract: A method of making an antimicrobial composite article, including the steps: providing a matrix comprising a polymeric material; providing a plurality of second phase particles comprising an antimicrobial agent; melting the matrix to form a matrix melt; distributing the plurality of second phase particles in the matrix melt at a second phase volume fraction to form a composite melt; forming a composite article from the composite melt; and treating the composite article to form an antimicrobial composite article having an exterior surface comprising an exposed portion of the matrix and the plurality of second phase particles. The distributing step can employ an extrusion process. The forming a composite article step can employ an injection molding process. The treating step can employ abrading and plasma-treating the article to define the exterior surface.

Abstract: A variety of polyhedral nanocages are provided having a hollow interior, ultrathin walls, and well-defined facets of metal atoms. The nanocages can include a variety of precious metals such as Pt, Au, Ru, Rh, or Ir. The metal atoms can take a face-centered cubic structure with {111} facets on the surface. The walls can be thin, sometimes less than 1 nm in thickness or only a few atomic layers in thickness. The nanocages can provide for efficient uses of valuable precious metals, among other things, in catalysis. For example, catalysts are provided exhibiting high mass activities in oxygen reduction reactions. Methods of making and methods of using the nanocages and catalysts are also provided.

Abstract: A method of melt infiltrating a green ceramic matrix composite (CMC) article, wherein the green CMC article includes a ceramic reinforcing structure. The method includes heating a localized region of the green CMC article; melting a metal alloy infiltrant to form a molten metal alloy; and introducing the molten metal alloy into the localized region to infiltrate the reinforcing structure of the green CMC article with the metal alloy infiltrant and form the CMC article.

Abstract: 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.

Abstract: The present invention relates to a high-purity tantalum powder and a preparation method therefore. The tantalum powder has a purity of more than 99.995%, as analyzed by GDMS. Preferably, the tantalum powder has an oxygen content of not more than 1000 ppm, a nitrogen content of not more than 50 ppm, a hydrogen content of not more than 20 ppm, a magnesium content of not more than 5 ppm, and an average particle diameter D50 of less than 25 ?m.

Abstract: Provided is a mixed powder for powder metallurgy having a chemical system not using Ni which causes non-uniform metallic microstructure in a sintered body. A mixed powder for powder metallurgy comprises: a partially diffusion alloyed steel powder in which Mo diffusionally adheres to a particle surface of an iron-based powder; a Cu powder; and a graphite powder, wherein the mixed powder for powder metallurgy has a chemical composition containing Mo: 0.2 mass % to 1.5 mass %, Cu: 0.5 mass % to 4.0 mass %, and C: 0.1 mass % to 1.0 mass %, with the balance consisting of Fe and inevitable impurities, and the partially diffusion alloyed steel powder has: a mean particle diameter of 30 ?m to 120 ?m; a specific surface area of less than 0.10 m2/g; and a circularity of particles with a diameter in a range from 50 ?m to 100 ?m of 0.65 or less.

Abstract: To provide catalyst particles that can exhibit high activity. Catalyst particles, which are alloy particles formed from platinum atoms and non-platinum metal atoms, each alloy particle having a main body that constitutes a granular form; and a plurality of protrusions protruding outward from the outer surface of the main body, in which the main body is formed from a non-platinum metal and platinum, the protrusions are formed from platinum as a main component, and the aspect ratio (diameter/length) of the protrusions is higher than 0 and lower than or equal to 2.

Abstract: The present invention relates to a method for producing a platinum-based alloy powder, the method comprising a heat treatment of a mixed powder containing a platinum-based powder composed of at least one selected from the group consisting of platinum and platinum compound, a platinum group metal-based powder composed of at least one selected from the group consisting of iridium, rhodium, palladium, and compound containing at least one of them, and an alkaline-earth metal compound, wherein specific surface area of the platinum group metal-based powder is 30 m2/g or more and D90 of the mixed powder is 1.0 ?m or less. According to the method for producing a platinum-based alloy powder of the invention, it is possible to produce a platinum-based alloy powder that has a desired particle diameter, also has a sharp particle size distribution, and has high purity and crystallinity.

Abstract: The present disclosure relates to a semiconductor device and a photoelectronic device, both including a transition-metal dichalcogenide thin-film, and to a method for producing a transition-metal dichalcogenide thin-film. The transition-metal dichalcogenide thin-film includes: a first region including a stack of N+M transition-metal dichalcogenide molecular layers; and a second region including a stack of N transition-metal dichalcogenide molecular layers, wherein the second region is horizontally adjacent to the first region, wherein the N transition-metal dichalcogenide molecular layers of the second region respectively horizontally extend from the N transition-metal dichalcogenide molecular layers of the first region.

Abstract: A negative electrode for an alkaline battery cell which includes zinc-based particles, wherein less than 20% of the zinc-based particles, by weight relative to the total zinc in the electrode, have a particle size of greater than about 150 micrometers, is provided. An alkaline electrochemical cell that includes the negative electrode and a method for reducing the gassing of the electrochemical cell is also provided.

Abstract: A nickel alloy composition comprising hafnium provides superior heat, corrosion, and stress resistance. Various nickel alloy compositions used in the oil and gas industry are improved for use by the addition of hafnium in suitable amounts. Hafnium increases the high temperature ductility by promoting the precipitation of randomly distributed MC carbides.

Abstract: Provided is an alloy steel powder for powder metallurgy containing an iron-based powder as a main component that is capable of achieving both high strength and high toughness in a sintered body using the same. In the alloy steel powder, the iron-based powder contains a reduced powder, and Mo content with respect to a total amount of the alloy steel powder is 0.2 mass % to 1.5 mass %, Cu powder content with respect to a total amount of the alloy steel powder is 0.5 mass % to 4.0 mass % and graphite powder content with respect to a total amount of the alloy steel powder is 0.1 mass % to 1.0 mass %.

Abstract: A method for preparing the iron-based biochar material, the iron-based biochar material prepared there from and a method for controlling the heavy metal pollution in soil using the iron-based biochar material. For the iron-based biochar material of the present invention, by using a method of high-temperature carbonization, a biomass is used as a raw material and an iron-containing compound is add in the process of preparing biochar, wherein iron is incorporated in a specific ratio, to form the iron-based biochar material with a special structure and function.

Abstract: There is provided a process for preparing alloy nanoparticles having a desired size. The process comprises a combination of co-reduction of metal salts in the presence of a reducing agent, and multi-step seeded growth synthesis. Also provided is a material which comprises alloy nanoparticles made of at least two metals. A mean diameter of the particles of the material is between about 30 nm and 200 nm as measured by transmission electron microscopy (TEM), and the particles have a coefficient of variation smaller than about 15%.

Abstract: Additive manufacturing methods, and articles made using additive manufacturing methods, are described herein. One embodiment is an article that comprises a hafnium-bearing superalloy. The superalloy includes at least about 50 weight percent nickel, from about 0.015 weight percent to about 0.06 weight percent carbon, and up to about 0.8 weight percent hafnium. The article further includes a plurality of primary carbide phase particulates disposed within the superalloy; the plurality has a median size less than about 1 micrometer. A method includes melting and solidifying particulates of a metal powder feedstock to build an intermediate article comprising a series of layers of solidified material. The feedstock includes the above-described superalloy composition. The method further includes heating the intermediate article to a temperature of at least about 950 degrees Celsius to form a processed article.

Abstract: The present invention is directed toward core-shell nanoparticles, each comprising a ligand-capped metal shell surrounding a plurality of discrete, nonconcentric, metal-containing cores. Methods of making and using these nanoparticles are also disclosed.

Abstract: A method for controlling the formation of molybdenum solid solution in Mo—Si—B composites which comprises processing at 1400° C. or less to minimize, if not prevent, the silicon from going into solid solution in the molybdenum.

Abstract: An electronic component includes a body including a dielectric material and an internal electrode embedded in the dielectric material, an external electrode disposed on the body and connected to the internal electrode, and a conductive adhesive connected to the external electrode. The external electrode and the conductive adhesive include a conductive resin. A circuit board includes the electronic component.

Abstract: A method is provided for metallization of substrates providing a high adhesion of the deposited metal to the substrate material and thereby forming a durable bond. The method applies novel adhesion promoting agents comprising nanometer-sized particles prior to metallization. The particles have at least one attachment group bearing a functional chemical group suitable for binding to the substrate.

Abstract: A laminated ceramic capacitor having internal electrodes configured such that Sn is dissolved in Ni, and, in a region of each of the internal electrodes at a depth of 2 nm from a surface thereof facing a ceramic dielectric layer, a CV value representing variation of a Sn/(Ni+Sn) ratio (ratio of number of atoms) is less than or equal to 32%. As a conductive paste for forming the internal electrodes, a conductive paste containing a Ni powder and a tin oxide powder which is represented by SnO or SnO2 and has a specific surface area of more than or equal to 10 m2/g as determined by a BET method is used, or a conductive paste containing a Ni—Sn alloy powder is used, or a conductive paste containing a Ni—Sn alloy powder and a tin oxide powder which is represented by SnO or SnO2 and has a specific surface area of more than or equal to 10 m2/g is used.

Abstract: A preparation method of the light absorption layer of a copper-indium-gallium-sulfur-selenium film solar cell is provided. The method employs a non-vacuum liquid-phase chemical technique, which comprises following steps: forming source solution containing copper, indium, gallium, sulfur and selenium; using the solution to form a precursor film on a substrate by a non-vacuum liquid-phase process; drying and annealing the precursor film. Thus, a compound film of copper-indium-gallium-sulfur-selenium is gained.