Abstract: A copper particle mixture ensures suppression of copper oxidation and high dispersibility, and that can be sintered at a low temperature in a short period of time can suitably be used for a conductive copper ink material. The copper particle mixture contains copper fine particle A and copper nanoparticle B, the copper fine particle A having an average particle diameter of 0.1 ?m to 5 ?m, and being coated with at least one dicarboxylic acid selected from the group consisting of malonic acid and oxalic acid, the copper nanoparticle B comprising a central portion comprising a copper single crystal, and a protective layer surrounding the central portion, and having an average particle diameter of 1 nm to 100 nm, and the protective layer of the copper nanoparticle B containing at least one member selected from the group consisting of C3-6 primary alcohols, C3-6 secondary alcohols, and derivatives thereof.

Abstract: A method for manufacturing a metal object having a solid lubricating surface layer includes: providing a metal blank having a surface; providing a plurality of microparticles and solid lubricating powder, and mixing them together, wherein the microparticles have a hardness greater than that of the surface; and projecting the microparticles and the solid lubricating powder onto the surface, wherein the microparticles cause plastic flow on the surface to form a compressive stress layer, and the solid lubricating powder adheres to the compressive stress layer to form a solid lubricating surface layer.

Abstract: An additive manufacturing system includes at least two photoconductor plates attached to a substrate. Each photoconductor plate can include separate the Linear Electro layers and transparent conductive oxide layers.

Abstract: Described is an additive manufacturing apparatus for additive manufacturing of three dimensional objects, said apparatus comprises a powder distribution unit movable across a build area for applying a layer of powder material thereon and a solidification device for selectively solidifying the applied powder layer at positions corresponding to a cross section of the object to be manufactured. Said powder distribution unit comprises at least a first and a second powder distributors essentially in parallel with each other and extending in a first direction, said first and second powder distributors are arranged to be adjustably spaced apart in a second direction transversely to said first direction which second direction is essentially in parallel with the direction of movement of said powder distribution unit over said build area.

Abstract: A metal paste, comprising (A) 65 to 85 wt % of metal particles and (B) 10 to 35 wt % of organic solvent, wherein the metal particles (A) consist 70 to 100 wt % of organically coated copper flakes having a specific surface area in the range of 1.9 to 3.7 m2/g, a total oxygen content in the range of 2 to 4 wt % and a weight ratio of total carbon to total oxygen in the range of 0.25 to 0.9.

Abstract: The invention relates to a surface-hardened, rotationally symmetrical workpiece, to a hardening method and to a hardening apparatus. The proposed hardening apparatus comprises a machine frame on which two coaxially arranged rotary bearings designed to support a rotationally symmetrical workpiece are arranged, at least one rotary bearing being operatively connected to a drive device to generate rotation of the workpiece; and at lease one laser apparatus for generating focused, high-energy radiation is arranged on said rotary bearing, said laser apparatus being movable in the axial direction, and the radiation being directed toward the workpiece.

Abstract: Disclosed is a processing technology for inhibiting weld coarse grains of magnesium alloy profiles, including the following steps: preparation of a magnesium alloy ingot, homogenization, scalping, extrusion, pre-stretching at room temperature, solution treatment, quenching, stretching correction, artificial aging, etc. The processing technology can effectively control the production of weld coarse grains in extrusion and heat treatment processes of magnesium alloy profiles, and all property indexes of final products are higher than standard requirements.

Abstract: A porous apparatus includes a first layer and a second layer. The second layer has a plurality of struts. At least some of the struts define a porous geometry defining a plurality of faces, at least one of the plurality of the faces at least partially confronting the first layer. Each face is bounded by intersecting struts at vertices. Less than all of the vertices of each face of the porous geometry at least partially confronting the first layer are connected by a strut to the first layer. A process of producing the at least partially porous structure includes depositing and scanning metal powder layers. At least some of the scanned metal powder layers form either one or both of a portion of a first section of the structure and a portion of a second section of the structure formed by at least the struts defining the porous geometry.

Abstract: 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 ?m to about 20 ?m. The primary metal particles are non-shape memory metal particles, and the metallic build material granule excludes shape memory metal particles.

Abstract: By melting a shaping material in which a metal powder and a binder are mixed and by carrying out injection molding (primary shaping) in an injection mold, an injection molded body, or an intermediate shaped body are produced. The injection molded body or the intermediate shaped body is placed by a transfer mold and is subjected to a gravity shaping (secondary shaping) with a transformation. A sintered body is manufactured by carrying out debindering and sintering to the injection molded body.

Abstract: A system and method are presented for producing solder paste having undercooled metallic core-shell particles. In one or more arrangements, the system includes a reconstitution assembly, a dispenser assembly, and a mixer, among other components. The reconstitution assembly is configured to place the cores of the solid core metallic core-shell particles into an undercooled liquid state to form a plurality of undercooled metallic core-shell particles. The dispenser assembly is configured to dispense one or more of a set of available flux components. The mixer assembly is configured to mix the one or more of the set of flux components dispensed by the dispenser assembly with the plurality of undercooled metallic core-shell particles formed by the reconstitution assembly to form a solder paste.

Abstract: In an example implementation, a method of operating a sintering furnace includes receiving information about a green object load to be sintered in a sintering furnace, determining a sintering profile based on the information, and performing a sintering process according to the sintering profile. During the sintering process, a sensor reading that indicates a degree of densification of a green object in the load is accessed from a densification sensor. The method includes initiating a cool down phase of the sintering process if the sensor reading has reached a target sensor reading.

Abstract: A tooling assembly and method of aligning a plurality of components for a repair process in an additive manufacturing machine includes positioning the plurality of components such that a repair surface of each of the plurality of components contacts an alignment plate, e.g., under the force of gravity or using biasing members. The method further includes surrounding the alignment plate with containment walls to define a reservoir around the plurality of components and dispensing a fill material, such as wax or a potting material, into the reservoir which is configured for fixing a relative position of the plurality of components when the fill material is solidified.

Abstract: A downhole component including a first portion; a second portion; a controlled failure structure between the first portion and second portion. A method for improving efficiency in downhole components.

Abstract: Metallic matrix composites are synthesized by mixing a first reactant, a second reactant and a nucleator compound to obtain a reaction mixture, and heating the reaction mixture to an auto-activation temperature to initiate a self-propagating high-temperature synthesis reaction between the first and second reactants. The metallic matrix composite can include a metallic matrix and an in situ formed reinforcement. The reinforcement can be formed of discrete particles substantially uniformly dispersed within the metallic matrix. Each of the particles can have a reinforcement constituent disposed about a core formed of the nucleator compound.

Abstract: Systems and methods for quenching an extrudate using an atomized spray of liquid are described. A system includes a billet die at a proximal end configured to accept a billet and form an extrudate, a quench chamber located adjacent to the billet die for receiving the extrudate and comprising at least one pulsed width modulation (PWM) atomizing spray nozzle and a control module in communication with the at least one PWM atomizing spray nozzle and configured to independently control a liquid pressure, a gas pressure, a spray frequency, a duty cycle and flow rate of each at least one PWM atomizing spray nozzle.

Abstract: A powder for additive manufacturing, which is a powder to be used in a three-dimensional additive manufacturing method, including a plurality of coated particles containing metal particles, and resin coating films that cover the metal particles and contain a caking additive, wherein 0.0001?t/D50?0.0010 in which t is an average thickness of the resin coating films and D50 is an average particle diameter of the metal particles.

Abstract: A method of fabricating an airfoil preform for a turbine engine by selective melting on a bed of powder, the preform including an airfoil and a removable support secured to the airfoil, the airfoil being fabricated layer by layer from a first edge to a second edge of the airfoil, the method including fabricating the removable support and the airfoil, the removable support being for securing to a fabrication platform and to a portion of a face of the airfoil situated near the first edge and facing the fabrication platform. The face of the airfoil facing the fabrication platform includes a flat extending away from the face, the flat being present over a portion of the face that is situated outside the first edge, the support being secured to the flat or both to the flat and to the portion of the face that is situated outside the first edge.

Abstract: By melting a shaping material in which a metal powder and a binder are mixed and by carrying out injection molding (primary shaping) in an injection mold, an injection molded body, or an intermediate shaped body are produced. The injection molded body or the intermediate shaped body is placed by a transfer mold and is subjected to a gravity shaping (secondary shaping) with a transformation. A sintered body is manufactured by carrying out debindering and sintering to the injection molded body.

Abstract: An orifice-type quenching nozzle for an induction hardening system includes a body having a plurality of nozzle orifices configured to apply a quenching fluid onto a to-be-quenched workpiece. The nozzle orifices are arranged on at least one surface of the body in rows and in columns, and the plurality of nozzle orifices are positioned such that each nozzle orifice is located a same distance from each directly adjacent nozzle orifice.