Disclosed are an aluminum-scandium alloy target with high scandium content and a preparation method thereof. The method comprises: preparing aluminum and scandium; melting the scandium; mixing the aluminum into the scandium, smelting and cooling to obtain an aluminum-scandium alloy through a plurality of cycles; ball-milling the alloy to obtain alloy powder and drying in vacuum, then pre-pressing and sintering in vacuum to obtain an aluminum-scandium alloy target billet; performing a thermal deformation process on the target billet to obtain the target, comprising hot forging, hot rolling and finish machining. In the present disclosure, the target has more uniform structure and chemical composition, higher relative density (up to 99.0% or more), finer grain size and higher ductility; reduce defects of shrinkage cavity and porosity, save material cost, solve problem of alloys with high brittleness, unable to process targets, meeting the requirements on wiring materials for large-scale integrated circuits.

Disclosed are an aluminum-scandium alloy target with high scandium content and a preparation method thereof. The method comprises: preparing aluminum and scandium; melting the scandium; mixing the aluminum into the scandium, smelting and cooling to obtain an aluminum-scandium alloy through a plurality of cycles; ball-milling the alloy to obtain alloy powder and drying in vacuum, then pre-pressing and sintering in vacuum to obtain an aluminum-scandium alloy target billet; performing a thermal deformation process on the target billet to obtain the target, comprising hot forging, hot rolling and finish machining. In the present disclosure, the target has more uniform structure and chemical composition, higher relative density (up to 99.0% or more), finer grain size and higher ductility; reduce defects of shrinkage cavity and porosity, save material cost, solve problem of alloys with high brittleness, unable to process targets, meeting the requirements on wiring materials for large-scale integrated circuits.

A catalyst used for dehydrogenation of an organic hydrogen-storage material to generate hydrogen, a support for the catalyst, and a preparation process thereof are presented. A hydrogen-storage alloy and a preparation process thereof are also provided. A process for providing high-purity hydrogen, a high-efficiently distributed process for producing high-purity and high-pressure hydrogen, a system for providing high-purity and high-pressure hydrogen, a mobile hydrogen supply system, and a distributed hydrogen supply apparatus are also described.

The present disclosure relates to ruthenium promoter catalyst compositions. The ruthenium promoter catalyst compositions comprise ruthenium metal species, an oxide support material, and a promoter species independently selected from the group consisting of La, Rb, Y, Yb, K, Cs, and Ba, or hydroxides, nitrates or oxides thereof. The present disclosure also relates to various methods, processes, systems, membranes and/or reactors, which can utilise the ruthenium promoter catalyst compositions, for example in ammonia synthesis.

A method for making an article is disclosed. The method involves inputting a digital model of an article into an additive manufacturing apparatus comprising an energy source. The additive manufacturing apparatus applies energy from the energy source to successively applied incremental quantities of a powder to fuse the powder to form the article corresponding to the digital model. The powder includes an aluminum alloy having 2.00-9.00 wt. % cerium, 0.25-3.00 wt. % silicon, 0.25-0.75 wt. % magnesium, 0-0.75 wt. % iron, 0-0.05 wt. % other alloying elements, and the balance of aluminum, based on the total weight of the aluminum alloy.

A method for making an article is disclosed. The method involves inputting a digital model of an article into an additive manufacturing apparatus comprising an energy source. The additive manufacturing apparatus applies energy from the energy source to successively applied incremental quantities of a powder to fuse the powder to form the article corresponding to the digital model. The powder includes an aluminum alloy having 2.00-9.00 wt. % cerium, 0.25-3.00 wt. % silicon, 0.25-0.75 wt. % magnesium, 0-0.75 wt. % iron, 0-0.05 wt. % other alloying elements, and the balance of aluminum, based on the total weight of the aluminum alloy.

The present disclosure is directed to methods of preparing substantially spherical metallic alloyed particles, having micron and sub-micron (i.e., nanometer)-scaled dimensions, and the powders so prepared, as well as articles derived from these powders. In particular embodiments, these metallic alloyed particles, complising rare earth metals, can be prepared in sizes as small 80 nm in diameter with size variances as low as 2-5%.

The present disclosure is directed to methods of preparing substantially spherical metallic alloyed particles, having micron and sub-micron (i.e., nanometer)-scaled dimensions, and the powders so prepared, as well as articles derived from these powders. In particular embodiments, these metallic alloyed particles, complising rare earth metals, can be prepared in sizes as small 80 nm in diameter with size variances as low as 2-5%.

This invention provides a regenerator material having a high specific heat, particularly in the temperature range of 10 to 25K, and a regenerator and a refrigerator comprising the regenerator material. The present invention specifically provides an HoCu-based regenerator material represented by general formula (1): HoCu.sub.2-xM.sub.x (1), wherein x is 0<x≤1, and M is at least one member selected from the group consisting of Al and transition metal elements (excluding Cu), as well as a regenerator and a refrigerator comprising the regenerator material.

This invention provides a regenerator material having a high specific heat, particularly in the temperature range of 10 to 25K, and a regenerator and a refrigerator comprising the regenerator material. The present invention specifically provides an HoCu-based regenerator material represented by general formula (1): HoCu.sub.2-xM.sub.x (1), wherein x is 0<x≤1, and M is at least one member selected from the group consisting of Al and transition metal elements (excluding Cu), as well as a regenerator and a refrigerator comprising the regenerator material.