Disclosed is a biomedical β titanium alloy and a preparation method thereof. Its composition includes: Mo: 9.20-13.50%; Fe: 1.00-3.20%; Zr: 3.50-8.20%; Ta: 0-1.00%; the balance is Ti. The β titanium alloy is suitable for the laser additive manufacturing technology, and the prepared parts have a dense equiaxed grain structure with ultra-low grain size and a small number of columnar grain structures, which produces a fine-grain strengthening effect, and greatly improve the hardness and tribocorrosion performance of the alloy material. Also provided is a method for preparing a non-toxic, low-elasticity, and tribocorrosion resistant biomedical β titanium alloy material. A powder prepared from the above alloy components is subjected to a laser additive manufacturing technology to prepare a corresponding β titanium alloy with high-hardness, good tribocorrosion resistance and extremely low cytotoxicity. Moreover, the prepared material has good weldability and is a special metal alloy powder suitable for laser additive manufacturing.

The present invention relates to a method for producing a molybdenum alloy target, and solves the problem of low density and coarser grains of the molybdenum alloy targets in the prior art. The present invention comprises subjecting a mixed powder with a mass ratio depending upon the formula composition of a molybdenum alloy to a pre-press forming process to obtain a preformed molybdenum alloy target blank; placing the preformed molybdenum alloy target blank in a capsule and subjecting the capsule to processes of preheating for degassing and vacuum seal welding; subjecting the target blank to a hot isostatic pressing process to obtain a densified molybdenum alloy prefabricated target; removing the capsule; and subjecting the molybdenum alloy prefabricated target with the capsule removed to a temperature-rising and pressure-decreasing process, followed by finish machining to obtain a molybdenum alloy target.

A powder production method includes providing an elongated workpiece and repeatedly contacting an outer surface of the elongated workpiece with a reciprocating cutter according to a predetermined at least one frequency to produce a powder. The powder includes a plurality of particles, wherein at least 95% of the produced particles have a diameter or maximum dimension ranging from about 10 μm to about 200 μm. A system for producing powders having a plurality of particles including a cutter and at least one controller is also provided herein.

A powder production method includes providing an elongated workpiece and repeatedly contacting an outer surface of the elongated workpiece with a reciprocating cutter according to a predetermined at least one frequency to produce a powder. The powder includes a plurality of particles, wherein at least 95% of the produced particles have a diameter or maximum dimension ranging from about 10 μm to about 200 μm. A system for producing powders having a plurality of particles including a cutter and at least one controller is also provided herein.

A method includes applying a material coating on a surface of a machine component using a thermal spray, wherein the material coating is formed from a combination of a hardfacing material and aluminum-containing particles. The method also includes thermally treating the material coating to generate an oxide layer comprising aluminum from the aluminum-containing particles, wherein the oxide layer is configured to reduce oxidation of the hardfacing material.

A bonding structure includes: a plurality of carbon nanotubes; a first bonded member, and a first metal sintered compact bonding first end portions of the plurality of carbon nanotubes and the first bonded member, wherein the first metal sintered compact enters spaces between the first end portions of the plurality of carbon nanotubes, and bonds to the plurality of carbon nanotubes while covering side faces and end faces of the first end portions of the plurality of carbon nanotubes.

A bonding structure includes: a plurality of carbon nanotubes; a first bonded member, and a first metal sintered compact bonding first end portions of the plurality of carbon nanotubes and the first bonded member, wherein the first metal sintered compact enters spaces between the first end portions of the plurality of carbon nanotubes, and bonds to the plurality of carbon nanotubes while covering side faces and end faces of the first end portions of the plurality of carbon nanotubes.

Provided is a method for manufacturing material powder for metal laminating modelling, in which a virgin material is manufactured based on the particle size distribution of the virgin material being an unused material powder, and the fluidity of an unsintered reused material after the virgin material is reused a predetermined number of times by a metal laminating modelling device, so that the particle size distribution of the virgin material corresponds to the fluidity of the reused material that is equal to or greater than a predetermined standard value. Silica particles may be added to the virgin material.

Provided is a method for manufacturing material powder for metal laminating modelling, in which a virgin material is manufactured based on the particle size distribution of the virgin material being an unused material powder, and the fluidity of an unsintered reused material after the virgin material is reused a predetermined number of times by a metal laminating modelling device, so that the particle size distribution of the virgin material corresponds to the fluidity of the reused material that is equal to or greater than a predetermined standard value. Silica particles may be added to the virgin material.

The present disclosure is drawn to a material set including a powder bed material and a binder fluid. The powder bed material can be from 80 wt % to 100 wt % metal particles having a metal core and a thin metal layer on the core, and the metal particles having a D50 particle size distribution value ranging from 4 μm to 150 μm and the thin metal layer having an average thickness from 20 nm to 2 μm. The binder fluid can adhere a first portion of the powder bed material relative to a second portion of the powder bed material not in contact with the binder fluid.