A method of making an atomized spherical -Ti/Ta alloy powder for additive manufacturing, having the steps of: a) blending elemental Ti and Ta powders to form a TiTa powder composition; b) hot-isostatically pressing said powder composition to form an TiTa electrode; and c) processing said TiTa electrode by electrode induction melting gas atomization (EIGA) to produce an atomized spherical TiTa alloy powder. A true spherical Ti-50 wt % Ta alloy powder, the product obtained by the process having the steps of: (a) blending elemental Ti and Ta powders to form a 50 wt %-50 wt % TiTa powder composition; b) hot-isostatically pressing said powder composition to form a TiTa electrode; and c) processing said TiTa electrode by electrode induction melting gas atomization (EIGA) to produce an atomized spherical Ti-50 wt % Ta powder comprising spherical -Ti/Ta alloy particles.

A method of making an atomized spherical -Ti/Ta alloy powder for additive manufacturing, having the steps of: a) blending elemental Ti and Ta powders to form a TiTa powder composition; b) hot-isostatically pressing said powder composition to form an TiTa electrode; and c) processing said TiTa electrode by electrode induction melting gas atomization (EIGA) to produce an atomized spherical TiTa alloy powder. A true spherical Ti-50 wt % Ta alloy powder, the product obtained by the process having the steps of: (a) blending elemental Ti and Ta powders to form a 50 wt %-50 wt % TiTa powder composition; b) hot-isostatically pressing said powder composition to form a TiTa electrode; and c) processing said TiTa electrode by electrode induction melting gas atomization (EIGA) to produce an atomized spherical Ti-50 wt % Ta powder comprising spherical -Ti/Ta alloy particles.

The invention relates to an EIGA coil (10) for partial melting an electrode (40). The EIGA coil (10) comprises a plurality of windings (12A, 12B, 12C) which are coaxially arranged with respect to a center axis (M) and axially spaced from each other, wherein each of the plurality of windings (12A, 12B, 12C) is formed in the shape of a ring interrupted by a gap (14A, 14B, 14C) and equidistant with respect to the center axis (M) and extending in a plane perpendicular to the center axis (M). Adjacent windings (12A, 12B; 12B, 12C) of the plurality of windings (12A, 12B, 12C) are respectively connected to each other via a connecting portion (20AB, 20BC; 120AB, 120BC).

A method for manufacturing turbomachine disks is provided. The method includes: providing a nickel alloy powder; and shaping the powder to obtain a disk. Providing a powder can include: manufacturing a nickel alloy electrode by PAM-CHR; atomizing a nickel alloy by EIGA from the nickel alloy electrode, leading to a raw powder; and sifting the raw powder under inert atmosphere or under vacuum with a granulometric cut-off between 150 ?m and 50 ?m, leading to the nickel-based alloy powder. In some examples, the granulometric cut-off can be between 125 ?m or 75 ?m.

A device for producing metal powder. This includes a melting chamber, a downstream atomization tower, and a nozzle assembly for atomizing a melt jet. The device further includes an induction coil disposed within the melting chamber and operated at a melting frequency f.sub.melt, the induction coil is adapted to locally melt a material rod at least section-wise received therein, to produce the melt jet to be atomized, and a separate intermediate coil disposed within the melting chamber and operated at a base frequency f.sub.base, wherein said intermediate coil is disposed downstream of the induction coil and aligned coaxially with the induction coil. The intermediate coil is configured to superheat the melt jet in a region between the induction coil and the nozzle assembly. The following applies to a frequency ratio F.sub.BS of the base frequency f.sub.base to the melting frequency f.sub.melt, 1?F.sub.BS=f.sub.base/f.sub.melt?500.

The invention relates to a production method of the powders composed of spherical heavy metal particles utilizing an ultrasonic atomization, where these powders can be applied in industrial applications, like additive manufacturing and several other. The method for production of heavy metal powders by ultrasonic atomization comprises providing a heavy metal raw material (5) in the vicinity of a heat source (13) being an electric arc (13), heating the heavy raw material (5) by the electric arc (13), so as to create a molten metal pool (21) on a sonotrode (3), the molten metal pool (21) having a temperature equal to or greater than the melting temperature of the heavy metal raw material (5), but below the vaporization temperature of the heavy metal raw material (5), providing ultrasonic mechanic vibrations by the sonotrode (3) to the molten metal pool (21), so as to cause the heavy metals droplets (11) being ejected from the molten metal pool (21), directing the ejected heavy metal droplets (11) away from the molten metal pool (21), so as the heavy metal droplets (11) freely cool down within a predetermined distance at least by radiation and transform to a heavy metal powder (11), collecting the heavy metal powder (11), so as to collect at least 75% of the heavy metal raw material (5) in the form of the heavy metal powder (11).

Disclosed are a 4D printing method and application of titanium-nickel shape memory alloy. The 4D printing method comprises the following steps: mixing and smelting pure titanium and pure nickel to obtain titanium-nickel alloy bars, then preparing alloy powder by a rotating electrode atomization method, and sieving the powder to obtain titanium-nickel alloy powder with a particle size of 15-53 ?m; placing the obtained titanium-nickel alloy powder in a discharge plasma assisted ball mill for discharge treatment to perform surface modification of the powder; and subjecting the titanium-nickel alloy powder to SLM forming to obtain the titanium-nickel shape memory alloy.

A plasma atomization metal powder manufacturing process includes providing a heated metal source and contacting the heated metal source with the plasma of at least one plasma source under conditions effective for causing atomization of the heated metal source. The atomization may be carried out using a gas to metal ratio of less than about 20, thereby obtaining a raw metal powder having a 0-106 m particle size distribution yield of at least 80%. The process may further include aligning the heated metal source with the plasma of at least one plasma source. An atomizing system may include an alignment system positioned upstream of the plasma source and adapted to adjust an orientation of the metal source relative to the at least one plasma source.

To provide an apparatus and method for manufacturing a metal nanoparticle dispersion with which a metal nanoparticle dispersion can be manufactured without using expensive reagents or equipment, and to provide a method for manufacturing a metal nanoparticle support, metal nanoparticles, a metal nanoparticle dispersion, and a metal nanoparticle support. This apparatus for manufacturing a metal nanoparticle dispersion is characterized in comprising: a jetting part for jetting a metal-salt solution or dispersion in which a metal salt has been dissolved or dispersed in a first liquid; a voltage-impressing part for applying a voltage to the jetting part and electrifying the metal-salt solution or dispersion; and a potential-difference-forming means for forming a potential difference between a second liquid in which the metal-salt solution or dispersion has been dispersed and the electrified metal-salt solution or dispersion, causing droplets of the metal-salt solution or dispersion to be jetted from the jetting part, and causing the second liquid to attract the droplets.

A method for preparing high-toughness heat-resistant aluminum alloy armature material, comprises: heating and melting an aluminum ingot into an aluminum liquid; adding the following elements to the aluminum solution in mass percent: Ce 6-12%, Y 5-9.5%, Zr 0.5-3%, Mg 0.1-2.5%, X 0.15-2.5%, Fe 0.15-0.25%, Mn 0.05-0.15%, and Si 0.1-0.5%; forming an alloy solution and casting same into an alloy ingot; processing the alloy ingot into spherical alloy powder; subjecting the spherical alloy powder to selective laser melting and solidification forming to produce nano-scale Al.sub.11Ce.sub.3, Al.sub.3(Y, Zr), and/or Al.sub.3X intermetallic compounds distributed in a net-like skeleton structure in an aluminum matrix. The material of the present disclosure has low density, high-temperature resistance, high energy absorption rate and excellent electrical conductivity, and excellent mechanical properties at room temperature and high temperature.