The present disclosure generally relates to metallic powders for use in multilayer ceramic capacitors, to multilayer ceramic capacitors containing same and to methods of manufacturing such powders and capacitors. The disclosure addresses the problem of having better controlled smaller particle size distribution, with minimal contaminant contents which can be implemented at an industrial scale.
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
An apparatus for producing carbon nanotubes includes a plasma apparatus and a CVD reactor which are connected in series is disclosed, and a nanoparticle catalyst in an aerosol state prepared in the plasma apparatus is transferred into the CVD reactor to synthesize carbon nanotubes, thereby continuously synthesizing the carbon nanotubes having excellent physical properties.
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
B33Y 70/00 - Materials specially adapted for additive manufacturing
There is provided a method of manufacturing nanoparticles comprising the steps of feeding a core precursor into a plasma torch in a plasma reactor, thereby producing a vapor of silicon or alloy thereof; and allowing the vapor to migrate to a quenching zone of the plasma reactor, thereby cooling the vapor and allowing condensation of the vapor into a nanoparticle core made of the silicon or alloy thereof, wherein the quenching gas comprises a passivating gas precursor that reacts with the surface of the core in the quenching zone produce a passivation layer covering the core, thereby producing said nanoparticles. The present invention also relates to nanoparticles comprising a core covered with a passivation layer, the core being made of silicon or an alloy thereof, as well as their use, in particular in the manufacture of anodes.
B22F 1/102 - Metallic powder coated with organic material
B22F 1/145 - Chemical treatment, e.g. passivation or decarburisation
B22F 1/16 - Metallic particles coated with a non-metal
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
B32B 5/30 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer comprising granules or powder
5.
NANOSIZE POWDER ADVANCED MATERIALS, METHOD OF MANUFACTURING AND OF USING SAME
The present disclosure describes processes and apparatuses for manufacturing advanced nanosize powder materials that address at least some of the known issues of scalability, continuity, and quality inherent in prior art processes and apparatuses. Also described are nanosized powders with advantageous chemical and/or physical properties that can be used in various applications. The apparatus for producing nanoparticles, comprising a feeding mechanism for feeding a precursor material in fluid form toward a reaction zone along a feed path; a plasma device configured for generating a plasma jet in the reaction zone impinging upon the precursor material at a convergence point between streamlines of the plasma jet and the feed path to produce a reactant gaseous mixture, the plasma jet streamlines being at an angle with respect to the feed path, and a cooling zone receiving the reactant gaseous mixture to cause nucleation and produce the nanoparticles.
C01B 33/029 - Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition of monosilane
B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
6.
Process and apparatus for producing powder particles by atomization of a feed material in the form of an elongated member
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
The present disclosure related to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
B33Y 70/00 - Materials specially adapted for additive manufacturing
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
8.
BORON NITRIDE NANOTUBES AND PROCESSES FOR PRODUCING SAME
The present disclosure relates to as-produced BNNTs having low impurity contents, a process and an apparatus for making same. The BNNTs have an average diameter of about 10 nm or less and having an impurity content of ≤ 20 wt.%, wherein the impurity content is measured after manufacture of the BNNTs and prior to a purification process. The process and apparatus are configured to provide a heated gas stream of boron species which is hydrogen-free, cooling the gas stream and incorporating a nitrogen-containing gas into the cooled gas stream under conditions to obtain the BNNTs. The process and apparatus thus afford manufacturing BNNTs whiles avoiding formation of hazardous boron hydrides.
The present disclosure generally relates to metallic powders for use in multilayer ceramic capacitors, to multilayer ceramic capacitors containing same and to methods of manufacturing such powders and capacitors. The disclosure addresses the problem of having better controlled smaller particle size distribution, with minimal contaminant contents which can be implemented at an industrial scale.
B22F 1/052 - Metallic powder characterised by the size or surface area of the particles characterised by a mixture of particles of different sizes or by the particle size distribution
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
C22C 1/04 - Making non-ferrous alloys by powder metallurgy
H01G 4/012 - Form of non-self-supporting electrodes
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
The present disclosure describes processes and apparatuses for manufacturing advanced nanosize powder materials that address at least some of the known issues of scalability, continuity, and quality inherent in prior art processes and apparatuses. Also described are nanosized powders with advantageous chemical and/or physical properties that can be used in various applications. The apparatus for producing nanoparticles, comprising a feeding mechanism for feeding a precursor material in fluid form toward a reaction zone along a feed path; a plasma device configured for generating a plasma jet in the reaction zone impinging upon the precursor material at a convergence point between streamlines of the plasma jet and the feed path to produce a reactant gaseous mixture, the plasma jet streamlines being at an angle with respect to the feed path, and a cooling zone receiving the reactant gaseous mixture to cause nucleation and produce the nanoparticles.
In additive manufacturing operations, powders used in stereolithographic processes need to be precisely spread out in a uniform fashion at every pass of the stereolithographic process to ensure predictability in powder surface morphology. Typically, this is difficult to achieve with conventional powders because often these powders suffer from poor flowability, which may further deteriorate over time, and impairs the efficiency of the stereolithographic processes. The present disclosure describes additive manufacturing powders having improved physical characteristics such as flowability and tap density, which are less sensitive or insensitive to ambient humidity. For example, there is described a powder that includes spherical particles having a particle size distribution of less than 1000 micrometers and having a measurable flowability as determined in accordance with ASTM B213 at 75% relative humidity.
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
B33Y 70/00 - Materials specially adapted for additive manufacturing
B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
C04B 35/00 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
13.
Metallic powders for use as electrode material in multilayer ceramic capacitors and method of manufacturing and of using same
The present disclosure generally relates to metallic powders for use in multilayer ceramic capacitors, to multilayer ceramic capacitors containing same and to methods of manufacturing such powders and capacitors. The disclosure addresses the problem of having better controlled smaller particle size distribution, with minimal contaminant contents which can be implemented at an industrial scale.
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
H01G 4/012 - Form of non-self-supporting electrodes
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
[Problem] To provide a method for producing a boron nitride nanomaterial, the method making it possible to more reliably remove boron from a boron nitride composition that includes boron, the boron nitride composition being produced using, e.g., thermal plasma vapor deposition. [Solution] This method for producing a boron nitride nanomaterial comprises: a nanomaterial generation step for generating a boron nitride nanomaterial in which boron grains are encapsulated in boron nitride fullerene; an oxidation treatment step for forming boron oxide on at least the surface layer of the boron grains by exposing the boron nitride nanomaterial to an oxidizing environment; and a mechanical shock application step for applying mechanical shock to remove the boron grains in the boron nitride nanomaterial that has undergone the oxidation treatment step, the boron nitride nanomaterial being immersed in a solvent that dissolves boron oxide.
Provided are: a BNNT material in which BNNT is dispersed and bundling is minimized, and a BNNT composite material using the same; and a method for producing a BNNT material. This boron nitride nanotube material (10) is characterized by including boron nitride nanotubes (1), and boron nitride fullerene hollow particles (7), wherein the boron nitride fullerene hollow particles (7) are dispersed between the boron nitride nanotubes (1).
C08L 27/12 - Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogenCompositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
C08L 101/00 - Compositions of unspecified macromolecular compounds
C08L 101/04 - Compositions of unspecified macromolecular compounds characterised by the presence of specified groups containing halogen atoms
C22C 32/00 - Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
C22C 47/00 - Making alloys containing metallic or non-metallic fibres or filaments
18.
Nanoparticles comprising a core covered with a passivation layer, process for manufacture and uses thereof
There is provided a method of manufacturing nanoparticles comprising the steps of feeding a core precursor into a plasma torch in a plasma reactor, thereby producing a vapor of silicon or alloy thereof; and allowing the vapor to migrate to a quenching zone of the plasma reactor, thereby cooling the vapor and allowing condensation of the vapor into a nanoparticle core made of the silicon or alloy thereof, wherein the quenching gas comprises a passivating gas precursor that reacts with the surface of the core in the quenching zone produce a passivation layer covering the core, thereby producing said nanoparticles. The present invention also relates to nanoparticles comprising a core covered with a passivation layer, the core being made of silicon or an alloy thereof, as well as their use, in particular in the manufacture of anodes.
B32B 5/30 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer comprising granules or powder
B22F 1/16 - Metallic particles coated with a non-metal
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, nickel alloys and silica powders for use in industry and science; nano metallic powders and plasma powder spherodization for use in research and development, industry and science; Ceramic powders used in research and development, in manufacturing, in industry and science; plasma treated ceramic powders for use in research and development, in manufacturing, in industry and science; ceramic nano powders for use in research and development, in manufacturing, in industry and science Metallic engineered spherical powders for use in manufacturing, in industry and science; plasma treated metallic powders for use in manufacturing, in industry and science; metallic nanopowders for use in manufacturing, in industry and science Maintenance of atomization systems, electronic induction systems and electromagnetic systems for manufacturing engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, nickel alloys and silica powders for use in industry and science, metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science, plasma treated metallic and ceramic powders for use in manufacturing, in industry and science, metallic and ceramic nanopowders for use in manufacturing, in industry and science and for manufacturing engineered nano metallic powders and plasma powder spherodization and structural parts therefor Product research and development in the fields of engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, nickel alloys and silica powders for use in industry and science, nano metallic powders and plasma powder spherodization, metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science, plasma treated metallic and ceramic powders for use in manufacturing, in industry and science, metallic and ceramic nanopowders for use in manufacturing, in industry and science
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Engineered spherical tungsten carbide, silicon and silica powders for use in industry and science; spherical plasma powder; ceramic engineered spherical powders for use in manufacturing, in industry and science; plasma treated ceramic powders for use in manufacturing, in industry and science; ceramic nanopowders for use in manufacturing, in industry and science. Metallic engineered spherical powders for use in manufacturing, in industry and science; plasma treated metallic powders for use in manufacturing, in industry and science; metallic nanopowders for use in manufacturing, in industry and science; engineered spherical tungsten, tantalum, molybdenum, titanium, aluminum, Nickel alloys powders for use in industry and science; nano metallic powders. Maintenance of atomisation systems, electronic induction systems and electromagnetic systems for manufacturing engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, Nickel alloys and silica powders for use in industry and science; Maintenance of atomisation systems, electronic induction systems and electromagnetic systems for manufacturing metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science, plasma treated metallic and ceramic powders for use in manufacturing, in industry and science, metallic and ceramic nanopowders for use in manufacturing, in industry and science and for manufacturing engineered nano metallic powders and plasma powder spherodization and structural parts therefor. Research and development in the fields of engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, Nickel alloys and silica powders for use in industry and science, nano metallic powders and plasma powder spherodization, metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science, plasma treated metallic and ceramic powders for use in manufacturing, in industry and science; Research and development in the fields of engineered metallic and ceramic nanopowders for use in manufacturing, in industry and science.
01 - Chemical and biological materials for industrial, scientific and agricultural use
06 - Common metals and ores; objects made of metal
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, Nickel alloys and silica powders for use in industry and science; nano metallic powders and plasma powder spherodization.
(2) Metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science; plasma treated metallic and ceramic powders for use in manufacturing, in industry and science; metallic and ceramic nanopowders for use in manufacturing, in industry and science. (1) Maintenance of atomisation systems, electronic induction systems and electromagnetic systems for manufacturing engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, Nickel alloys and silica powders for use in industry and science, metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science, plasma treated metallic and ceramic powders for use in manufacturing, in industry and science, metallic and ceramic nanopowders for use in manufacturing, in industry and science and for manufacturing engineered nano metallic powders and plasma powder spherodization and structural parts therefor.
(2) Research and development in the fields of engineered spherical tungsten carbide, tungsten, tantalum, molybdenum, silicon, titanium, aluminum, Nickel alloys and silica powders for use in industry and science, nano metallic powders and plasma powder spherodization, metallic and ceramic engineered spherical powders for use in manufacturing, in industry and science, plasma treated metallic and ceramic powders for use in manufacturing, in industry and science, metallic and ceramic nanopowders for use in manufacturing, in industry and science.
22.
METALLIC POWDERS FOR USE AS ELECTRODE MATERIAL IN MULTILAYER CERAMIC CAPACITORS AND METHOD OF MANUFACTURING AND OF USING SAME
The present disclosure generally relates to metallic powders for use in multilayer ceramic capacitors, to multilayer ceramic capacitors containing same and to methods of manufacturing such powders and capacitors. The disclosure addresses the problem of having better controlled smaller particle size distribution, with minimal contaminant contents which can be implemented at an industrial scale.
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
There is provided a method of manufacturing nanoparticles comprising the steps of feeding a core precursor into a plasma torch in a plasma reactor, thereby producing a vapor of silicon or alloy thereof; and allowing the vapor to migrate to a quenching zone of the plasma reactor, thereby cooling the vapor and allowing condensation of the vapor into a nanoparticle core made of the silicon or alloy thereof, wherein the quenching gas comprises a passivating gas precursor that reacts with the surface of the core in the quenching zone produce a passivation layer covering the core, thereby producing said nanoparticles. The present invention also relates to nanoparticles comprising a core covered with a passivation layer, the core being made of silicon or an alloy thereof, as well as their use, in particular in the manufacture of anodes.
B22F 1/02 - Special treatment of metallic powder, e.g. to facilitate working, to improve properties; Metallic powders per se, e.g. mixtures of particles of different composition comprising coating of the powder
B22F 9/16 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
B33Y 70/00 - Materials specially adapted for additive manufacturing
26.
INDUCTION PLASMA TORCH WITH HIGHER PLASMA ENERGY DENSITY
An induction plasma torch comprises a tubular torch body, a tubular insert, a plasma confinement tube and an annular channel. The tubular torch body has upstream and downstream sections defining respective inner surfaces. The tubular insert is mounted to the inner surface of the downstream section of the tubular torch body. The plasma confinement tube is disposed in the tubular torch body, coaxial therewith. The plasma confinement tube has a tubular wall having a thickness tapering off in an axial direction of plasma flow. The annular channel is defined between, on one hand, the inner surface of the upstream section of the tubular torch body and an inner surface of the insert and, on the other hand, an outer surface of the tubular wall of the plasma confinement tube. The cooling channel carries a fluid for cooling the plasma confinement tube.
An induction plasma torch comprises a tubular torch body, a tubular insert, a plasma confinement tube and an annular channel. The tubular torch body has upstream and downstream sections defining respective inner surfaces. The tubular insert is mounted to the inner surface of the downstream section of the tubular torch body. The plasma confinement tube is disposed in the tubular torch body, coaxial therewith. The plasma confinement tube has a tubular wall having a thickness tapering off in an axial direction of plasma flow. The annular channel is defined between, on one hand, the inner surface of the upstream section of the tubular torch body and an inner surface of the insert and, on the other hand, an outer surface of the tubular wall of the plasma confinement tube. The cooling channel carries a fluid for cooling the plasma confinement tube.
An induction plasma torch comprises a tubular torch body, a plasma confinement tube disposed in the tubular torch body coaxial therewith, a gas distributor head disposed at one end of the plasma confinement tube and structured to supply at least one gaseous substance into the plasma confinement tube; an inductive coupling member embedded within the tubular torch body for applying energy to the gaseous substance to produce and sustain plasma in the plasma confinement tube, and an electrically conductive capacitive shield on an inner surface of the tubular torch body. The capacitive shield is segmented into axial strips interconnected at one end. Axial grooves are machined in the inner surface of the tubular torch body, the axial grooves being interposed between the axial strips.
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
The present disclosure relates to a process and an apparatus for producing powder particles by atomization of a feed material in the form of an elongated member such as a wire, a rod or a filled tube. The feed material is introduced in a plasma torch. A forward portion of the feed material is moved from the plasma torch into an atomization nozzle of the plasma torch. A forward end of the feed material is surface melted by exposure to one or more plasma jets formed in the atomization nozzle. The one or more plasma jets being includes an annular plasma jet, a plurality of converging plasma jets, or a combination of an annular plasma jet with a plurality of converging plasma jets. Powder particles obtained using the process and apparatus are also described.
B01J 2/02 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
31.
POWDER FLOW MONITOR AND METHOD FOR IN-FLIGHT MEASUREMENT OF A FLOW OF POWDER
The present disclosure relates a powder flow monitor having a powder transport tube, a sensor of a flow of powder in the powder transport tube, and an oscillator configured to impart a cleaning vibration to the powder transport tube. A method of in-flight monitoring of a flow of powder using the powder flow monitor, and uses thereof, are also provided.
B65G 53/66 - Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
G01F 1/74 - Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
G01N 15/06 - Investigating concentration of particle suspensions
A plasma confinement tube for use in an induction plasma torch is disclosed. The plasma confinement tube defines a geometrical axis and an outer surface. The plasma confinement tube includes a capacitive shield comprising a film of conductive material applied to the outer surface of the plasma confinement tube and segmented into axial strips. The axial strips are interconnected at one end. Axial grooves are machined in the outer surface of the plasma confinement tube, and interposed between the axial strips. The conductive film may have a thickness smaller than a skin-depth calculated for a frequency of operation of the induction plasma torch and an electrical conductivity of the conductive material of the film.
An induction plasma torch comprises a tubular torch body, a plasma confinement tube disposed in the tubular torch body coaxial therewith, a gas distributor head disposed at one end of the plasma confinement tube and structured to supply at least one gaseous substance into the plasma confinement tube; an inductive coupling member for applying energy to the gaseous substance to produce and sustain plasma in the plasma confinement tube, and a capacitive shield including a film of conductive material applied to the outer surface of the plasma confinement tube or the inner surface of the tubular torch body. The film of conductive material is segmented into axial strips interconnected at one end. The film of conductive material has a thickness smaller than a skin-depth calculated for a frequency of a current supplied to the inductive coupling member and an electrical conductivity of the conductive material of the film. Aaxial grooves can be machined in the outer surface of the plasma confinement tube or the inner surface of the tubular torch body, the axial grooves being interposed between the axial strips.
A plasma reactor comprises a torch body comprising a plasma torch for generating plasma, a reactor section in fluid communication with the torch body for receiving the plasma from the plasma torch, and a quench section in fluid communication with the reactor section. The quench section comprises an inner wall defining a quench chamber, the inner wall has a serrated configuration, and the quench chamber has an upstream end adjacent the reactor section and an opposite downstream end. The plasma reactor also comprises at least one heating element in thermal communication with the reactor section, wherein the at least one heating element provides for selectively modulating a temperature within the reactor section.
A titanium metal production apparatus is provided with (a) a first flow channel that supplies magnesium in a state of gas, (b) a second flow channel that supplies titanium tetrachloride in a state of gas, (c) a gas mixing section in which the magnesium and titanium tetrachloride in a state of gas are mixed and the temperature is controlled to be 1600°C or more, (d) a titanium metal deposition section in which particles for deposition are arranged so as to be movable, the temperature is in the range of 715 to 1500°C, and the absolute pressure is 50 kPa to 500 kPa, and (e) a mixed gas discharge section which is in communication with the titanium metal deposition section.
C22B 5/04 - Dry processes by aluminium, other metals, or silicon
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
36.
DEVICE FOR PRODUCING TITANIUM METAL, AND METHOD FOR PRODUCING TITANIUM METAL
A device for producing titanium metal comprises (a) a first heating unit that heats and gasifies magnesium and a first channel that feeds the gaseous magnesium, (b) a second heating unit that heats and gasifies titanium tetrachloride so as to have a temperature of at least 1600ºC and a second channel that feeds the gaseous titanium tetrachloride, (c) a venturi section at which the second channel communicates with an entrance channel, the first channel merges into a throat and as a result the magnesium and the titanium tetrachloride combine in the throat and a mixed gas is formed in the exit channel, and in which the temperature of the throat and the exit channel is regulated to be at least 1600ºC, (d) a titanium metal deposition unit that communicates with the exit channel and has a substrate for deposition with a temperature in the range of 715-1500ºC, and (e) a mixed gas discharge channel that communicates with the titanium metal deposition unit.
C22B 5/04 - Dry processes by aluminium, other metals, or silicon
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
37.
METAL TITANIUM PRODUCTION DEVICE AND METAL TITANIUM PRODUCTION METHOD
A metal titanium production device comprising: (a) a magnesium evaporation unit in which solid magnesium is evaporated and a first flow path which is communicated with the evaporation unit and through which gaseous magnesium is supplied; (b) a second flow path through which gaseous titanium tetrachloride is supplied; (c) a gas mixing unit which is communicated with the first flow path and the second flow path and in which the gaseous magnesium is mixed with titanium tetrachloride, the absolute pressure is adjusted to 50 to 500 kPa and the temperature is adjusted to 1600˚C or higher; (d) a metal titanium precipitation unit which is communicated with the gas mixing unit and in which a precipitation substrate having at least partially a temperature of 715 to 1500˚C is placed and the absolute pressure is adjusted to 50 to 500 kPa; and (e) a mixed gas discharge unit which is communicated with the metal titanium precipitation unit.
Disclosed is a process for producing a metal ball, which comprises the steps of: providing a predetermined mass of a raw material piece; making a plasma flame by a high-frequency energy generated from a plasma working gas and a high-frequency induction coil and increasing the nitrogen concentration in a plasma generation space to 2 vol% or more; introducing the raw material piece into the plasma flame to melt the raw material piece and spheroidizing the molten product; and solidifying the molten and speroidized raw material. Nitrogen can be introduced into the metal ball through the speroidizing step and the solidifying step.
B22D 25/02 - Special casting characterised by the nature of the product by its peculiarity of shapeSpecial casting characterised by the nature of the product of works of art
B22D 23/00 - Casting processes not provided for in groups
B22F 1/00 - Metallic powderTreatment of metallic powder, e.g. to facilitate working or to improve properties
B22F 9/04 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from solid material, e.g. by crushing, grinding or milling
Disclosed is a method for producing titanium metal, which comprises: (a) a step in which a mixed gas is formed by supplying titanium tetrachloride and magnesium into a mixing space that is held at an absolute pressure of 50-500 kPa and at a temperature not less than 1700˚C; (b) a step in which the mixed gas is introduced into a deposition space; (c) a step in which titanium metal is deposited and grown on a substrate for deposition; and (d) a step in which the mixed gas after the step (c) is discharged. In this connection, the deposition space has an absolute pressure of 50-500 kPa, the substrate for deposition is arranged in the deposition space, and at least a part of the substrate for deposition is held within the temperature range of 715-1500˚C.
A process and apparatus for producing nanopowders and materials processing is described herein. A plasma reactor comprising a torch body comprising a plasma torch for generating a plasma; a reactor section in fluid communication with the torch body for receiving a plasma discharge and further being in fluid communication with a quench section; and at least one heating element in thermal communication with the reactor section and wherein the at least one heating element provides for selectively modulating the temperature within the reactor section is described herein.
B01J 2/04 - Processes or devices for granulating materials, in generalRendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor
B01J 19/24 - Stationary reactors without moving elements inside
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles exhibiting a reduced powder agglomeration feature; in-flight modifying the surface properties of the particles; and collecting coated powder particles. An apparatus for surface treating micro- and nanoparticles comprising a Dielectric Barrier Discharge Torch operating at atmospheric pressure or soft vacuum conditions is also described herein.
H05H 1/02 - Arrangements for confining plasma by electric or magnetic fieldsArrangements for heating plasma
C23C 16/00 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
H01J 7/24 - Cooling arrangementsHeating arrangementsMeans for circulating gas or vapour within the discharge space
H05B 31/20 - Mechanical arrangements for feeding electrodes
42.
PLASMA SURFACE TREATMENT USING DIELECTRIC BARRIER DISCHARGES
A process for the in-flight surface treatment of powders using a Dielectric Barrier Discharge Torch operating at atmospheric pressures or soft vacuum conditions is described herein. The process comprising feeding a powder material into the Dielectric Barrier Discharge Torch yielding powder particles exhibiting a reduced powder agglomeration feature; in-flight modifying the surface properties of the particles; and collecting coated powder particles. An apparatus for surface treating micro- and nanoparticles comprising a Dielectric Barrier Discharge Torch operating at atmospheric pressure or soft vacuum conditions is also described herein.
C23C 4/12 - Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
B05C 19/00 - Apparatus specially adapted for applying particulate materials to surfaces
C09D 5/46 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes for flame-sprayingCoating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes for electrostatic or whirl-sintering coating
43.
METHOD FOR PRODUCING METAL NANOPOWDERS BY DECOMPOSITION OF METAL CARBONYL USING AN INDUCTION PLASMA TORCH
A process for synthesizing metal nanopowders by introducing metal carbonyl into an induction plasma torch. By taking advantage of the much lower dissolution temperature of carbonyl as opposed to the high melting temperature of conventional metal powder feeds less torch power is required. Moreover, in contrast to current powder production techniques utilizing electrode based plasma torches, the induction plasma torch does not introduce contaminants into the nanopowder.
B22F 9/30 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with decomposition of metal compounds, e.g. by pyrolysis
B22F 9/06 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
A process and apparatus for preparing a nanopowder are presented. The process comprises feeding a reactant material into a plasma reactor in which is generated a plasma flow having a temperature sufficiently high to vaporize the material; transporting the vapor with the plasma flow into a quenching zone; injecting a preheated quench gas into the plasma flow in the quenching zone to form a renewable gaseous condensation front; and forming a nanopowder at the interface between the renewable controlled temperature gaseous condensation front and the plasma flow.
B01J 8/02 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with stationary particles, e.g. in fixed beds
H05H 1/42 - Plasma torches using an arc with provisions for introducing materials into the plasma, e.g. powder or liquid
B22F 9/12 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from gaseous material
45.
Process for the synthesis, separation and purification of powder materials
The invention concerns a process for the spheroidisation, densification and purification of powders through the combined action of plasma processing, and ultra-sound treatment of the plasma-processed powder. The ultra-sound treatment allows for the separation of the nanosized condensed powder, referred to as ‘soot’, from the plasma melted and partially vaporized powder. The process can also be used for the synthesis of nanopowders through the partial vaporization of the feed material, followed by the rapid condensation of the formed vapour cloud giving rise to the formation of a fine aerosol of nanopowder. In the latter case, the ultra-sound treatment step serves for the separation of the formed nanopowder form the partially vaporized feed material.
B22F 9/14 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes using electric discharge
A process and apparatus for synthesizing a nanopowder is presented. In particular, a process for the synthesis of nanopowders of various materials such as metals, alloys, ceramics and composites by induction plasma technology, using organometallic compounds, chlorides, bromides, fluorides, iodides, nitrites, nitrates, oxalates and carbonates as precursors is disclosed. The process comprises feeding a reactant material into a plasma torch in which is generated a plasma flow having a temperature sufficiently high to yield a superheated vapor of the material; transporting said vapor by means of the plasma flow into a quenching zone; injecting a cold quench gas into the plasma flow in the quenching zone to form a renewable gaseous cold front; and forming a nanopowder at the interface between the renewable gaseous cold front and the plasma flow.
B22F 9/22 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
