Abstract: One object of the present disclosure is to provide a production method of magnesium hydride that is free of carbon dioxide and has high production efficiency, a power generation system that does not emit carbon dioxide or radiation using magnesium hydride, and an apparatus for producing magnesium hydride; therefore, the method for producing magnesium hydride of the present disclosure comprises a procedure for irradiating a magnesium compound different from magnesium hydride with hydrogen plasma, and a procedure for depositing a magnesium product containing magnesium hydride on a depositor for depositing magnesium hydride disposed within the range in which hydrogen plasma is present, wherein the surface temperature of the depositor is kept no more than a predetermined temperature at which magnesium hydride precipitates.

Abstract: A method for manufacturing a high-strength steel bar can include the steps of: reheating a steel slab at a temperature ranging from 1000° C. to 1100° C., the steel slab including a certain amount of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), copper (Cu), nickel (Ni), molybdenum (Mo), aluminum (Al), vanadium (V), nitrogen (N), antimony (Sb), tin (Sn), and iron (Fe) and other inevitable impurities, The method can further include finish hot-rolling the reheated steel slab at a temperature of 850° C. to 1000° C., and cooling the hot-rolled steel to a martensite transformation start temperature (Ms (° C.)) through a tempcore process.

Abstract: The present invention relates to a low-temperature sinterable copper particle material prepared using an electride and an organic copper compound and a preparation method therefor and, more particularly, to a copper nanoparticle which can be useful as a conductive copper ink material thanks to its small size and high dispersibility, and a method for preparing the copper nanoparticle by reducing an organic copper compound with an electride as a reducing agent. The present invention provides copper nanoparticles which can be suitably used as a conductive copper nanoink material because the copper nanoparticles show the restrained oxidation of the copper, have an average particle diameter of around 5 nm to cause the depression of melting point, are of high dispersibility, and allow the removal of the electride in a simple ultrasonication process.

Abstract: A process for catalytic oxidation of ammonia gas by way of an oxygen-containing gas in a presence of a noble metal-containing catalyst may be employed to give nitrogen monoxide. A temperature of an ammonia/air mixed gas may be optimized in respect of nitrogen monoxide selectivity of the reaction before contact with the catalyst. Examination of catalytic NH3 oxidation according to 4NH3+5O2?4NO+6H2O revealed that an optimum mode of operation of an NH3 burner in an HNO3 plant is not to be achieved by maintenance of a constant gauze temperature of the catalyst gauze by automatic setting of the NH3:air ratio. Rather, there is an optimum temperature for each process condition that should be set not by changing the NH3:air ratio but instead by altering the temperature of the NH3/air mixed gas before contact with the catalyst gauzes.

Abstract: A supported catalyst for decomposing an organic substance that includes a support and a catalyst particle supported on the support. The catalyst particle contains a perovskite-type composite oxide represented by AxByMzOw, where the A contains at least one selected from Ba and Sr, the B contains Zr, the M is at least one selected from Mn, Co, Ni and Fe, y+z=1, x?0.995, z?0.4, and w is a positive value satisfying electrical neutrality. A film thickness of a catalyst-supporting film supported on the support and containing the catalyst particle is 5 ?m or more, or a supported amount as determined by normalizing a mass of the catalyst particle supported on the support by a volume of the support is 45 g/L or more.

Abstract: In various embodiments, a water-based binder solution for use in additive manufacturing, includes a thermoplastic binder. The thermoplastic binder includes a first polymer strand having a weight average molecular weight (Mw) of from greater than or equal to 5,000 g/mol to less than or equal to 15,000 g/mol, a second polymer strand having a weight average molecular weight of from greater than or equal to 10,000 g/mol to less than or equal to 50,000 g/mol, and a third polymer strand having a weight average molecular weight of from greater than or equal to 1,000 g/mol to less than or equal to 5,000 g/mol. The binder solution further comprises from greater than or equal to 0.1 wt % to less than or equal to 5 wt % of a non-aqueous solvent having a boiling point of greater than 100° C.

Abstract: A three-dimensional metallic foam is fabricated with an active oxide material for use as an anode for lithium batteries. The porous metal foam, which can be fabricated by a freeze-casting process, is used as the anode current collector of the lithium battery. The porous metal foam can be heat-treated to form an active oxide material to form on the surface of the metal foam. The oxide material acts as the three-dimensional active material that reacts with lithium ions during charging and discharging.

Abstract: A quasicrystalline material and a semiconductor device to which the quasicrystalline material is applied are disclosed. A quasicrystalline material is based on a quasicrystalline element having one or more axis of symmetry (e.g., a 2-fold axis, a 3-fold axis, a 5-fold axis, or a higher fold axes of symmetry). The quasicrystalline material is capable of phase changes between a quasicrystalline phase and an approximant crystalline phase having a further regular atom arrangement than the quasicrystalline phase. The quasicrystalline material that may be used as a phase change material and may be applied to a phase change layer of a semiconductor device.

Abstract: In accordance with one aspect of the present disclosure, there is provided a steel material for a tailor-welded blank, including 0.04 to 0.06 wt % of carbon (C), 1.2 to 1.5 wt % of manganese (Mn), 0.01 to 0.10 wt % of titanium (Ti), 0.01 to 0.10 wt % of niobium (Nb), and the balance of iron (Fe) and inevitable impurities; having a tensile strength (TS) of 550 MPa or greater, a yield strength (YS) of 300 MPa or greater, and an elongation (EL) of 20% or greater; and having a dual-phase structure of ferrite and martensite.

Abstract: An embodiment relates to an ultrasonic additive manufacturing process, comprising joining a foil comprising a bulk metallic glass to a substrate; and forming a cladded composite comprising the foil and the substrate; wherein a thickness of the cladded composite is greater than a critical casting thickness of the bulk metallic glass, wherein the cladded composite comprises a cladding layer of the bulk metallic glass on the substrate and the bulk metallic glass comprises approximately 0% crystallinity, approximately 0% porosity, less than 50 MPa thermal stress, approximately 0% distortion, approximately 0 inch heat affected zone, approximately 0% dilution, and a strength of about 2,000-3,500 MPa.

Abstract: 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.

Abstract: The present invention provides a metal foam production method that enables a foaming process to be performed at low cost and enables controlling of the shape of metal foam. According to the present invention, a mold that transmits light and a precursor prepared by mixing a metal with a foaming agent are used, and a metal foam is produced by irradiating the precursor with a light transmitted through the mold to thereby heat and foam the precursor so as to obtain a metal foam, while controlling the shape of the metal foam by the mold.

Abstract: The devices, systems, and methods of the present disclosure are directed to powder spreading and binder distribution techniques for consistent and rapid layer-by-layer fabrication of three-dimensional objects formed through binder jetting. For example, a powder may be spread to form a layer along a volume defined by a powder box, a binder may be deposited along the layer to form a layer of a three-dimensional object, and the direction of spreading the layer and depositing the binder may be in a first direction and in a second direction, different from the first direction, thus facilitating rapid formation of the three-dimensional object with each passage of the print carriage over the volume. Powder delivery, powder spreading, thermal energy delivery, and combinations thereof, may facilitate consistently achieving quality standards as the rate of fabrication of the three-dimensional object is increased.

Abstract: An example bushing has three portions along its radial direction including an inner portion most proximal to a central hole of the bushing, an outer portion most distal from the center hole, and a core portion between the inner portion and the outer portion. The core portion has a hardness that is less than the hardness of the inner portion or the outer portion of the bushing. The bushing may be formed using high carbon steel, which in some cases may be spheroidal cementite crystal structure. A rough bushing may be formed using the high carbon steel, followed by a direct hardening process, and an induction hardening process on the inner surface most proximal to the central hole of the bushing. The induction hardening on the inner surface may harden the outer portion while tempering the core portion of the bushing.

Abstract: A composite material having an alloy matrix including titanium, aluminum, niobium, manganese, boron, and carbon is disclosed. The composite material includes, by atomic percentage, 40.0% to 50.0% Al, 1.0% to 8.0% Nb, 0.5% to 2.0% Mn, 0.1% to 2.0% B, and 0.01% to 0.2% C. The composite material is doped with a solid lubricant such as MoS2, ZnO, CuO, hexagonal boron nitride (hBN), WS2, AgTaO3, CuTaO3, CuTa2O6, or combinations thereof. Components composed of the composite material exhibit increased ductility at room temperature and reduced fracture tendency, resulting in improved durability.

Abstract: A preparation method of SiO2 aerogels is for solvent replacement process during preparation of SiO2 aerogels and adopts “a manner of continuously circulation filtration” for an operation of adding solvent so that wet gel is continuously circulated and replaced (rinsing) by mass alcohol solvent and organic solvent to greatly accelerate (reducing) the time for replacement operation of wet gel solvent. At the same time, the alcohol solvent or the organic solvent passing through the reaction container separates wet gel from water content or the alcohol solution through filtration procedure. Afterward the alcohol solution and the organic solution enter the reaction container to perform solvent replacement such that fast continuously circulation filtration is performed to greatly improve the effect of replacing wet gel solvent.

Abstract: The invention relates to a method for producing a semi-finished product comprising a foamable core comprising a foamable mixture that comprises at least one first metal having an aluminum content of at least approximately 80 wt. %, in relation to the quantity of the at least one first metal, and at least one foaming agent, wherein a layer of at least one second metal in the form of a non-foamable solid material and with an aluminum content of at least approximately 80 wt. %, in relation to the quantity of the at least one second metal, is respectively applied to at least one first and second surface of the core. The invention also relates to a corresponding semi-finished product and to the use of such a semi-finished product for foaming a metal.

Abstract: A method comprises providing a molten aluminum alloy selected from the group consisting of 6000 series aluminum alloys comprises chromium (Cr) in a range of between 0.001 wt % to 0.05 wt %. The molten aluminum alloy is formed into a formed body having beta-AlFeSi particles. The formed body is solution heat treated at a temperature in a range of 1,025-1,050° F. to form a heat-treated body. The solution heat treating transforms substantially all of the beta-AlFeSi particles into alpha-AlFeSi particles such that the heat-treated body is substantially free of the beta-AlFeSi particles.

Abstract: A method for preparing a metal foam is provided which can freely control characteristics, such as pore size and porosity, of the metal foam, prepare the metal foam in the form of films or sheets which have conventionally been difficult to produce, particularly the form of thin films or sheets as well, and prepare a metal foam having excellent other physical properties such as mechanical strength. It is also possible to efficiently form a structure in which the metal foams as above are integrated with good adhesive force on a metal base material.

Abstract: A system may include a powder source; a powder delivery device; an energy delivery device; and a computing device. The computing device may be configured to: control the powder source to deliver metal powder to the powder delivery device; control the powder delivery device to deliver the metal powder to a surface of an abrasive coating; and control the energy delivery device to deliver energy to at least one of the abrasive coating or the metal powder to cause the metal powder to be joined to the abrasive coating.