Abstract: The present invention relates to a method for leaching precious metals contained in a waste denitrification catalyst by using a pressure leaching process, and more specifically, to a method for leaching precious metals contained in a waste denitrification catalyst by using a pressure leaching process, the method comprising the steps of: forming a mixture by mixing a waste denitrification catalyst with a sodium salt solution; and leaching vanadium and tungsten contained in the mixture by feeding the mixture into a sealed pressurized reactor, and then heating and stirring the mixture.

Abstract: The present invention provides a rare earth permanent magnet material and manufacturing method thereof. The manufacturing method of the present invention comprises a multi-arc ion plating step and a infiltrating step, wherein multi-arc ion plating process is adopted to deposit a metal containing a heavy rare earth element on a surface of a sintered neodymium-iron-boron magnet which has a thickness of 10 mm or less in at least one direction; and then heat treatment is performed on the sintered neodymium-iron-boron after deposition. The sum of an intrinsic coercive force (Hcj, in unit of kOe) and a maximum magnetic energy product ((BH)max, in unit of MGOe) of the permanent magnet material of the present invention is 66.8 or more. Moreover, the manufacturing method of the present invention has high production efficiency and does not increase harmful substances, and the price of devices is relatively low.

Abstract: A metal powder for powder metallurgy contains Fe as a principal component, Ni in a proportion of 5 mass % or more and 20 mass % or less, Si in a proportion of 0.3 mass % or more and 5 mass % or less, and C in a proportion of 0.005 mass % or more and 0.3 mass % or less, and when one element selected from the group consisting of Ti, V, Y, Zr, Nb, Hf, and Ta is defined as a first element, and one element selected from the group and having a higher group number in the periodic table than that of the first element or having the same group number in the periodic table as that of the first element and a higher period number in the periodic table than that of the first element is defined as a second element.

Abstract: A system includes a chamber to receive a powdered material to be used to form an object. The system includes actuators coupled to the chamber. The actuators apply pressure waves to the powdered material in the chamber. The system also includes a controller to activate a plurality of the actuators in a sequence. Activation of the plurality of actuators in the sequence converges pressure waves on a particular volume of powdered material in the chamber to compress the particular volume and to transform at least a portion of the powdered material in the particular volume to solid material of the object.

Abstract: A method of manufacturing a Ni alloy part includes a solution treatment step of solution treating a sintered compact, which is obtained by sintering and molding a precipitation hardening Ni alloy powder by metal injection molding, by allowing the sintered compact to hold at a temperature of not lower than 1050° C. but not higher than 1250° C. for one hour to five hours, followed by rapidly cooling to room temperature, where the precipitation hardening Ni alloy powder, and an aging treatment step of aging-treating the solution-treated sintered compact by allowing the solution-treated sintered compact to hold at the temperature of not lower than 600° C. but not higher than 800° C., followed by cooling to room temperature.

Abstract: A system for inspecting a part while said part is produced by additive manufacturing, includes an additive manufacturing apparatus having a build tray, the apparatus being configured to fabricate the part layer-by-layer on the tray; an automated tool holder carrying a tool configured to deposit, add or weld layer-upon-layer of material; the tool holder and tray are configured to move relative to one another along a defined path; and an inspection device attached to the tool holder and configured to scan a layer of material in situ. The tool holder alternately arranges the tool and inspection device in a working position so that the tool holder fixes the tool in the working position for depositing, adding, or welding the layer of material and thereafter the tool holder switches said tool with the inspection device into the working position for scanning and detecting defects in the layer of material.

Abstract: The present invention is related to additive manufacturing methods and systems using a recoater with in-situ exchangeable recoater blades. Being able to switch out recoater blades in situ, i.e. without stopping the build and opening up the build chamber, is advantageous, especially for larger, more complicated, and/or longer builds. For instance, if a recoater blade becomes damaged, a new one can be readily swapped in. Or if a different material for the object(s) is used during the build, it may be advantageous to switch in a new recoater blade that is made of the new, different material.

Abstract: The method including: applying a graphite-based lubricant to a cavity surface of a die; forming a first graphite-based powder layer by disposing graphite-based powder that does not contain a binder on a cavity surface of a lower punch, forming a magnet powder body by putting magnet powder on the first graphite-based powder layer, and forming a second graphite-based powder layer by disposing graphite-based powder that does not contain a binder on the magnet powder body; and producing a compact by performing press forming using the lower punch and a upper punch while heating the magnet powder body surrounded by the graphite-based lubricant applied to the cavity surface of the die, the first graphite-based powder layer, and the second graphite-based powder layer, and releasing the compact from a forming die.

Abstract: A method for producing a layer including a connecting medium on an assembly partner is provided. The method includes providing a carrier on which the connecting medium is applied. The connecting medium contains a metal in the form of a multiplicity of metal particles. The assembly partner is placed on the connecting medium located on the carrier and pressed onto the connecting medium located on the carrier, so that a layer of the connecting medium adheres to the assembly partner. The assembly partner together with the layer adhering thereto is removed from the carrier. By means of a gas flow, edges of the layer, at which the latter extends laterally beyond the assembly partner, are removed so that a layer residue of the layer remains adhering to the assembly partner.

Abstract: An apparatus for producing a three-dimensional work piece comprises a carrier to receive a layer of raw material powder, a control unit, an irradiation system adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier, wherein the control unit controls the operation of the irradiation system in such a manner that the raw material powder is heated to a first temperature which allows sintering and/or melting of the raw material powder in order to generate a layer of the three-dimensional work piece, and a heating system adapted to selectively irradiate electromagnetic or particle radiation onto the layer of raw material powder applied onto the carrier, wherein the control unit is adapted to control the operation of the heating system in such a manner that the raw material powder is heated to a second temperature that is lower than the first temperature.

Abstract: A method for counteracting tensile stress in an article is disclosed, including heating the article and applying compressive stress to the article along a compressive stress vector, the compressive stress vector including a compressive stress vector component opposite in direction to a tensile stress vector of a thermally-induced tensile stress of the article. The compressive stress is applied by thermally-induced autogenous pressure by a fixture contacting the article. A fixture for counteracting tensile stress is disclosed, including a first compression member and a second compression member, and a position lock connecting the first compression member to the second compression member and reversibly fixing the first compression member relative to the second compression member. The first compression member and the second compression member include compressive surfaces having mating conformations for surfaces of an article. The position lock includes a material composition.

Abstract: One aspect of the present invention is a lubricant to be incorporated into a powder metallurgical mixed powder containing an iron-based powder. The lubricant includes a flaky organic material having an average particle diameter of from 0.1 ?m to less than 3 ?m. Another aspect of the present invention is a powder metallurgical mixed powder which contains an iron-based powder and the lubricant. Yet another aspect of the present invention is a method for producing a sintered compact. The method includes the step of mixing materials to give a powder metallurgical mixed powder containing an iron-based powder and the lubricant. The powder metallurgical mixed powder is compacted using a die to give a powder compact. The powder compact is sintered to give a sintered compact.

Abstract: Provided is an efficient method for producing nickel powder from a solution containing a nickel ammine complex, the method including adding seed crystals to a solution containing a nickel ammine complex and subjecting the resulting mixture to hydrogen reduction under high temperatures and high pressures to produce nickel powder, which makes it possible to maintain the quality of the nickel powder produced and reduce the amount of the seed crystals used. The method for producing nickel powder is characterized by adding seed crystals and a dispersant having an anionic functional group to the solution containing a nickel ammine complex to form a mixture slurry, and subjecting the mixture slurry to pressurized hydrogen reduction treatment by blowing hydrogen into the mixture slurry in a high temperature and high pressure atmosphere to cause a reduction reaction, thereby reducing the nickel ammine complex in the mixture slurry to obtain nickel powder.

Abstract: Aspects of the disclosure include a removable support for additive manufacture and methods and code for manufacturing and removing the same. A removable support for a laser-sintered component having at least one surface to connect to may include a support body, a first set of connectors, and a second set of connectors. The support body may have a first wing and a second wing, each with a distal surface and a lateral midline bisecting the distal surface. Each set of connectors may project from the distal surface on one side of the lateral midline of their respective wings to connect to the surface of the component while the distal surface also defines a connector-free portion on the other side of the lateral midline.

Abstract: A powder deposition apparatus for producing a component comprises a base plate, an annular stack of heating elements, accommodating the base plate, one or more insulating elements, being interleaved between adjoining heating elements, a mechanism operable to deposit a plurality of layers of a powder material onto the base plate, and a laser energy source operable to selectively fuse a portion of the deposited layer. The annular stack of heating elements is sized such that a predetermined clearance is defined between the component and the annular stack of heating elements. As successive layers of the powder material are deposited onto the base plate, the base plate is lowered into the stack of heating elements, the heating elements being actuated sequentially to maintain a pre-determined temperature profile in the deposited layers.

Abstract: A method of producing a Ni—P alloy sputtering target, wherein a Ni—P alloy having a P content of 15 to 21 wt % and remainder being Ni and unavoidable impurities is melted and atomized to prepare a Ni—P alloy atomized powder having an average grain size of 100 ?m or less, the Ni—P alloy atomized powder is mixed with a pure Ni atomized powder, and the obtained mixed powder is hot pressed. An object of the present invention is to provide a method of producing a Ni—P alloy sputtering target which achieves a small deviation from an intended composition.

Abstract: A heat treatment method for a steel material according to the present invention includes: a first step of forming austenite by heating the steel material to a temperature equal to or higher than an A1 point; a second step of cooling the steel material heated in the first step, while keeping the steel material at a temperature higher than an Ms point, thereby causing the austenite of the steel material to be transformed into ferrite, pearlite, or bainite; and a third step of cooling the steel material to a temperature equal to or lower than the Ms point after the second step. According to the present invention, it is possible to provide a heat treatment method for a steel material which is capable of shortening a heat treatment time while suppressing the formation of martensite.

Abstract: A production method of silver nanowires exhibits a yield enhancement effect for a protective agent other than PVP. The method for producing silver nanowires includes depositing a silver linear structure, which is referred to as silver nanowires, in an alcohol solvent having a silver compound, a halogen compound, and an organic protective agent dissolved therein. A deposition reaction of silver is performed in a state where aluminum nitrate is further dissolved in the solvent, the total amount of aluminum nitrate dissolved in the solvent being from 0.01 to 0.50 in terms of Al/Ag molar ratio with respect to the total amount of the silver compound. The organic protective agent is, for example, one containing one or more kinds of alkylated PVP and a PVP-PVA graft copolymer.