REACTIVE METAL POWDERS IN-FLIGHT HEAT TREATMENT PROCESSES

There are provided reactive metal powder in-flight heat treatment processes. For example, such processes comprise providing a reactive metal powder; and contacting the reactive metal powder with at least one additive gas while carrying out said in-flight heat treatment process, thereby obtaining a raw reactive metal powder. 1. A reactive metal powder in-flight heat treatment process comprising:contacting a reactive metal powder with an in-flight heat treatment process gas mixture comprising (i) at least one in-flight heat treatment process gas and (ii) at least one additive gas that is present at a concentration of less than 1000 ppm in said mixture, while carrying out said in-flight heat treatment process to obtain a raw reactive metal powder; andforming, with said at least one additive gas, a surface layer on said raw reactive metal powder, said raw reactive metal powder with said surface layer thereon, comprises less than 1000 ppm of at least one element from said at least one additive gas,wherein said surface layer comprises a first layer and a second layer, said first layer comprising atoms of said heated reactive metal source with atoms and/or molecules of said at least one additive gas, said first layer being a depletion layer deeper and thicker than said second layer, said second layer being a native oxide layer,and wherein a particle size distribution of about 10 to about 53 μm of said raw reactive metal powder with said surface layer thereon has a flowability less than 40 s, measured according to ASTM B213.2. A reactive metal powder in-flight heat treatment process comprising:providing a reactive metal powder;contacting said reactive metal powder with an in-flight heat treatment process gas mixture comprising (i) at least one in-flight heat treatment process gas and (ii) at least one additive gas, while carrying out said in-flight heat treatment process to obtain a raw reactive metal powder having a surface layer thereon; andoptionally sieving said raw ...

GRAPHENIC CARBON NANOPARTICLES HAVING A LOW POLYAROMATIC HYDROCARBON CONCENTRATION AND PROCESSES OF MAKING SAME

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight. Also provided are Graphene nanosheets having a polyaromatic hydrocarbon concentration of about 0.01% to about 0.5%.

GRAPHENIC CARBON NANOPARTICLES HAVING A LOW POLYAROMATIC HYDROCARBON CENTRATION AND PROCESSES OF MAKING SAME

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.

METAL POWDER ATOMIZATION MANUFACTURING PROCESSES

There are provided reactive metal powder atomization manufacturing processes. For example, such processes include providing a heated metal source and contact the heated metal source with at least one additive gas while carrying out the atomization process. Such processes provide raw reactive metal powder having improved flowability. The at least one additive gas can be mixed together with an atomization gas to obtain an atomization mixture, and the heated metal source can be contacted with the atomization mixture while carrying out the atomization process. Reactive metal powder spheroidization manufacturing processes are also provided.

GRAPHENIC CARBON NANOPARTICLES HAVING A LOW POLYAROMATIC HYDROCARBON CONCENTRATION AND PROCESSES OF MAKING SAME

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.

PLASMA ATOMIZATION METAL POWDER MANUFACTURING PROCESSES AND SYSTEM THEREFOR

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 μm 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. 1. A plasma atomization metal powder manufacturing process comprising:providing a heated metal source;aligning the heated metal source with a plasma of at least one plasma source, the aligning comprising positioning the heated metal source within at most 5 centimeters from an outlet nozzle of the at least one plasma source; andcontacting said heated metal source with the plasma of the at least one plasma source under conditions effective for causing atomization of said heated metal source, wherein said atomization is carried out by using a total gas to metal mass ratio of less than about 20, thereby obtaining a raw metal powder having a 0-106 μm particle size distribution yield of at least 80%, measured according to ASTM B214.2. The manufacturing process of claim 1 , wherein the total gas to metal mass ratio is of less than about 17.3. The manufacturing process of claim 1 , wherein the total gas to metal mass ratio is of about 5 to about 15.46-. (canceled)7. The manufacturing process of claim 1 , wherein the total gas to metal mass ratio is of about 10 to about 15.8. The manufacturing process of claim 1 , wherein the raw metal powder has a 0-106 μm particle size distribution yield of at least 90% claim 1 , measured ...

GRAPHENIC CARBON NANOPARTICLES HAVING A LOW POLYAROMATIC HYDROCARBON CONCENTRATION AND PROCESSES OF MAKING SAME

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T.) greater than about 250 m/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C. 1. Graphene nanosheets comprising:a polyaromatic hydrocarbon concentration of less than about 0.7% by weight;{'sup': '2', 'a specific surface area (B.E.T) greater than about 250 m/g; and'}{'sup': '3', 'a tap density of less than about 0.08 g/cm, as measured by ASTM B527-15 standard.'}2. The graphene nanosheets of claim 1 , wherein said graphene nanosheets have a tap density of less than about 0.06 g/cm claim 1 , as measured by ASTM B527-15 standard.3. (canceled)4. The graphene nanosheets of claim 1 , wherein said graphene nanosheets have a tap density of about 0.03 to about 0.05 g/cm claim 1 , as measured by ASTM B527-15 standard.56-. (canceled)7. The graphene of claim 1 , wherein said graphene nanosheets have a specific surface area (B.E.T) greater than about 300 m/g.89-. (canceled)10. The graphene nanosheets of claim 1 , wherein said graphene nanosheets have a specific surface area (B.E.T) of about 300 to about 600 m/g.1115-. (canceled)16. The graphene nanosheets of claim 1 , wherein said graphene nanosheets have a polyaromatic hydrocarbon concentration of less than about 100 ppm.1725-. (canceled)26. The graphene nanosheets of claim 1 , wherein said graphene nanosheets have a polyaromatic hydrocarbon concentration of less than about 0.01% by weight.27. The graphene nanosheets of claim 1 , wherein said graphene nanosheets have a polyaromatic hydrocarbon concentration of about 0.01% to about 0.7%.2829-. (canceled)30. The ...

PLASMA ATOMIZATION METAL POWDER MANUFACTURING PROCESSES AND SYSTEMS THEREOF

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 μm 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.

Reactive Metal Powders In-Flight Heat Treatment Processes

There are provided reactive metal powder in-flight heat treatment processes. For example, such processes comprise providing a reactive metal powder; and contacting the reactive metal powder with at least one additive gas while carrying out said in-flight heat treatment process, thereby obtaining a raw reactive metal powder. 190.-. (canceled)91. A reactive metal powder in-flight heat treatment process comprising:contacting a reactive metal powder with an in-flight heat treatment process gas mixture comprising (i) at least one in-flight heat treatment process gas and (ii) at least one additive gas that is present at a concentration of less than 1000 ppm in said mixture, while carrying out said in-flight heat treatment process to obtain a raw reactive metal powder; andforming, with said at least one additive gas, a surface layer on said raw reactive metal powder, said raw reactive metal powder with said surface layer thereon, comprises less than 1000 ppm of at least one element from said at least one additive gas,wherein said surface layer comprises a first layer and a second layer, said first layer comprising atoms of said heated reactive metal source with atoms and/or molecules of said at least one additive gas, said first layer being a depletion layer deeper and thicker than said second layer, said second layer being a native oxide layer,and wherein a particle size distribution of about 10 to about 53 μm of said raw reactive metal powder with said surface layer thereon has a flowability less than 40 s, measured according to ASTM B213.92. The process of wherein the at least one additive gas comprises an oxygen-containing gas.93. The process of wherein the at least one additive gas comprises an oxygen-containing gas and an inert gas.94. The process of wherein the at least one additive gas comprises an oxygen-containing gas chosen from O claim 91 , CO claim 91 , CO claim 91 , NO claim 91 , air claim 91 , water vapor and mixtures thereof.95. The process of wherein the ...

Powder Sieving System Using a Broad Frequency Filter

A powder sieving system that is configured as part of a powder reclamation system is provided. The powder sieving system includes a support structure; and a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet and comprising a broad frequency filter disposed between the inlet and the outlet, the broad frequency filter including: a first filter fixed relative to the filter housing, the first filter being substantially rigid; and a second filter coupled within the filter housing adjacent to the first filter, the second filter being substantially flexible such that the second filter is movable relative to the first filter within the filter housing when the filter housing moves relative to the support structure, the first filter and the second filter configured to restrict a first portion of a powder larger than a predetermined threshold from reaching the outlet. 1. A powder sieving system comprising:a support structure; and a first filter fixed relative to the filter housing, the first filter being substantially rigid; and', 'a second filter coupled within the filter housing adjacent to the first filter, the second filter being substantially flexible such that the second filter is movable relative to the first filter within the filter housing when the filter housing moves relative to the support structure, the first filter and the second filter configured to restrict a first portion of a powder larger than a predetermined threshold from reaching the outlet., 'a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet and comprising a broad frequency filter disposed between the inlet and the outlet, the broad frequency filter comprising2. The powder sieving system of claim 1 , wherein the powder sieving system is configured as part of a powder reclamation system claim 1 , wherein the first filter and the second filter are configured to allow a second portion of ...

Broad Frequency Filter for Powder System

A sieving system for a powder is provided. The sieving system includes a support structure; a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet, the filter housing comprising a broad frequency filter disposed between the inlet and the outlet, the broad frequency filter configured to restrict a first portion of the powder larger than a predetermined threshold from reaching the outlet; and a powder mass control assembly configured to determine data indicative of a powder mass within a portion of the sieving system and control one or more operations of the sieving system based on the determined data indicative of the powder mass. 1. A sieving system for a powder , comprising:a support structure;a filter housing movable relative to the support structure, the filter housing defining an inlet and an outlet, the filter housing comprising a broad frequency filter disposed between the inlet and the outlet, the broad frequency filter configured to restrict a first portion of the powder larger than a predetermined threshold from reaching the outlet; anda powder mass control assembly configured to determine data indicative of a powder mass within a portion of the sieving system and control one or more operations of the sieving system based on the determined data indicative of the powder mass.2. The sieving system of claim 1 , further comprising:a raw reclaimed powder hopper positioned upstream of the inlet of the filter housing; anda filtered reclaimed powder hopper positioned downstream of the outlet of the filter housing.3. The sieving system of claim 2 , wherein the powder mass control assembly comprises:a first load cell in communication with the raw reclaimed powder hopper, the first load cell configured to measure a first mass of powder within the raw reclaimed powder hopper; anda second load cell in communication with the filtered reclaimed powder hopper, the second load cell configured to measure a second mass ...

Aluminum Based Metal Powders and Methods of Their Production

Aluminum-based metallic powders, along with their methods of production and formation, are provided. The Al-based metallic powders are formed with an increased amount of oxygen within at least a portion of the particles of the powder. The Al-based metallic powders show improved flowability. 1. A metallic powder comprising a plurality of Al-based metallic particles comprising at least 50% by weight aluminum , wherein the plurality of Al-based metallic particles comprises a first portion of Al-based metallic particles , wherein the first portion of Al-based metallic particles comprises a normalized half oxygen concentration that is 50% of a normalized maximum oxygen concentration , wherein the normalized half oxygen concentration to particle surface area is 0.002 min/μmor greater as measured via auger electron spectroscopy.2. The metallic powder of claim 1 , wherein the first portion of the Al-based metallic particles constitutes at least 40% by weight of the plurality of Al-based metallic particles of the metallic powder.3. The metallic powder of claim 1 , wherein the first portion of the Al-based metallic particles constitutes 50% to 99% of the plurality of Al-based metallic particles of the metallic powder.4. The metallic powder of claim 1 , wherein the normalized half oxygen concentration to particle surface area is 0.002 min/μmto 0.003 min/μmas measured via auger electron spectroscopy.5. The metallic powder of claim 1 , wherein each Al-based metallic particle of the first portion of Al-based metallic particles have an average porosity of 0.2% or less.6. The metallic powder of claim 1 , wherein the first portion of Al-based metallic particles has an average grain fraction measurement of 75% or greater.7. The metallic powder of claim 1 , wherein a majority of the particles within the plurality of Al-based metallic particles have an average of grains/10 μm of line of less than 3.5 as measured according to a lineal intercept measurement.81. The metallic powder of ...

Reactive metal powders in-flight heat treatment processes

There is provided a reactive metal powder in-flight heat treatment process comprising: contacting a reactive metal powder with an in-flight heat treatment process gas mixture comprising (i) at least one in-flight heat treatment process gas and (ii) at least one additive gas that is present at a concentration of less than 1000 ppm in the mixture, while carrying out the in-flight heat treatment process to obtain a raw reactive metal powder; and forming, with the at least one additive gas, a surface layer on the raw reactive metal powder, the raw reactive metal powder with the surface layer thereon, comprises less than 1000 ppm of at least one element from the at least one additive gas, the surface layer comprises a first layer and a second layer, the first layer being a depletion layer deeper and thicker than the second layer, the second layer being a native oxide layer.

Reactive metal powders in-flight heat treatment processes

Plasma atomization metal powder manufacturing processes and systems therefor

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 µm 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.

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes can include mixing together an atomizing gas and at least one additive gas to obtain an atomization mixture; contacting a heated reactive metal source with said atomization mixture while atomizing said heated reactive metal source to produce a raw reactive metal powder having a surface layer thereon; sieving said raw reactive metal powder with said surface layer thereon to obtain a powder having a predetermined particle size; and contacting said powder having said predetermined particle size with water.

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes include providing a heated metal source and contact the heated metal source with at least one additive gas while carrying out the atomization process. Such processes provide raw reactive metal powder having improved flowability. The at least one additive gas can be mixed together with an atomization gas to obtain an atomization mixture, and the heated metal source can be contacted with the atomization mixture while carrying out the atomization process. Reactive metal powder spheroidization manufacturing processes are also provided.

Plasma atomization metal powder manufacturing processes and systems therefor

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 µm 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.

Plasma atomization metal powder manufacturing processes and systems therefor

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 µm 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.

Graphenic carbon nanoparticles having a low polyaromatic hydrocarbon concentration and processes of making same

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200°C.

Graphenic carbon nanoparticles having a low polyaromatic hydrocarbon concentration and processes of making same

Plasma atomization metal powder manufacturing processes and systems therefore

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 µm 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.

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes include providing a heated metal source and contact the heated metal source with at least one additive gas while carrying out the atomization process. Such processes provide raw reactive metal powder having improved flowability. The at least one additive gas can be mixed together with an atomization gas to obtain an atomization mixture, and the heated metal source can be contacted with the atomization mixture while carrying out the atomization process. Reactive metal powder spheroidization manufacturing processes are also provided.

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes can include mixing together an atomizing gas and at least one additive gas to obtain an atomization mixture; contacting a heated reactive metal source with said atomization mixture while atomizing said heated reactive metal source to produce a raw reactive metal powder having a surface layer thereon; sieving said raw reactive metal powder with said surface layer thereon to obtain a powder having a predetermined particle size; and contacting said powder having said predetermined particle size with water.

Graphenic carbon nanoparticles having a low polyaromatic hydrocarbon concentration and processes of making same

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T.) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.

Graphenic carbon nanoparticles having a low polyaromatic hydrocarbon concentration and processes of making same

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200 C.

Plasma atomization metal powder manufacturing processes and systems therefore

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes include providing a heated metal source and contact the heated metal source with at least one additive gas while carrying out the atomization process. Such processes provide raw reactive metal powder having improved flowability. The at least one additive gas can be mixed together with an atomization gas to obtain an atomization mixture, and the heated metal source can be contacted with the atomization mixture while carrying out the atomization process. Reactive metal powder spheroidization manufacturing processes are also provided.

Graphene-like carbon nanoparticles with low polycyclic aromatic hydrocarbon concentration and preparation process of the same

【課題】低減された多環芳香族炭化水素（ＰＡＨ）含有量を有するグラフェンナノシート、グラフェンナノシートを作製するためのプロセスおよびグラフェンナノシートから多環芳香族炭化水素を除去するためのプロセスを提供する。【解決手段】約０．７重量％未満の多環芳香族炭化水素濃度、およびＡＳＴＭ Ｂ５２７－１５規格による測定で約０．０８ｇ／ｃｍ３未満のタップ密度を有するグラフェンナノシートが提供される。グラフェンナノシートは、約２５０ｍ２／ｇ超の比表面積（Ｂ．Ｅ．Ｔ）も有する。グラフェンナノシートを酸化雰囲気下、少なくとも約２００℃の温度で加熱することを含む、グラフェンナノシートを作製するためのプロセスおよびグラフェンナノシートから多環芳香族炭化水素を除去するためのプロセスも提供される。【選択図】図３

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes include providing a heated metal source and contact the heated metal source with at least one additive gas while carrying out the atomization process. Such processes provide raw reactive metal powder having improved flowability. The at least one additive gas can be mixed together with an atomization gas to obtain an atomization mixture, and the heated metal source can be contacted with the atomization mixture while carrying out the atomization process. Reactive metal powder spheroidization manufacturing processes are also provided. Fig1. WO 2017/070779 PCT/CA2016/051240 117 2' 8 16 40 40 24 64 FIG. 1

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes can include mixing together an atomizing gas and at least one additive gas to obtain an atomization mixture; contacting a heated reactive metal source with said atomization mixture while atomizing said heated reactive metal source to produce a raw reactive metal powder having a surface layer thereon; sieving said raw reactive metal powder with said surface layer thereon to obtain a powder having a predetermined particle size; and contacting said powder having said predetermined particle size with water.

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes can include mixing together an atomizing gas and at least one additive gas to obtain an atomization mixture; contacting a heated reactive metal source with said atomization mixture while atomizing said heated reactive metal source to produce a raw reactive metal powder having a surface layer thereon; sieving said raw reactive metal powder with said surface layer thereon to obtain a powder having a predetermined particle size; and contacting said powder having said predetermined particle size with water.

Method of producing plasma-atomized metal powder and system therefor

【課題】生産コストを抑え、十分な微細粒径分布を有する球状粉末を得ることができるプラズマアトマイズ金属粉末製造方法およびそのシステムを提供する。【解決手段】加熱された金属源を提供することと、加熱された金属源を、加熱された金属源のアトマイズを引き起こすのに有効な条件下で、少なくとも１つのプラズマ源のプラズマと接触させることとを含む。アトマイズは、約２０未満のガス対金属比を使用して実行されてもよく、それにより、少なくとも８０％の０～１０６ミクロン粒径分布収率を有する原料金属粉末を得る。本方法は、加熱された金属源を少なくとも１つのプラズマ源のプラズマと位置合わせすることをさらに含んでもよい。アトマイズシステムは、プラズマ源の上流に位置決めされ、少なくとも１つのプラズマ源に対する金属源の配向を調整するように適合された位置合わせシステムを含んでもよい。【選択図】なし

Aluminum based metal powders and methods of their production

Aluminum-based metallic powders, along with their methods of production and formation, are provided. The Al-based metallic powders are formed with an increased amount of oxygen within at least a portion of the particles of the powder. The Al-based metallic powders show improved flowability.

Reactive metal powders in-flight heat treatment processes

There are provided reactive metal powder in-flight heat treatment processes. For example, such processes comprise providing a reactive metal powder; and contacting the reactive metal powder with at least one additive gas while carrying out said in-flight heat treatment process, thereby obtaining a raw reactive metal powder.

Reactive metal powders in-flight heat treatment processes

There are provided reactive metal powder in-flight heat treatment processes. For example, such processes comprise providing a reactive metal powder; and contacting the reactive metal powder with at least one additive gas while carrying out said in-flight heat treatment process, thereby obtaining a raw reactive metal powder. FIG. 1 1/11 10-> 18 20+22 12 16 24 26 32 FIG. 1

Reactive metal powders in-flight heat treatment processes

A reactive metal powder in-flight heat treatment process is provided comprising: contacting a reactive metal powder with an in-flight heat treatment process gas mixture comprising (i) an in-flight heat treatment process gas and (ii) an additive gas that is present at a concentration of less than 1000 ppm in the mixture, while carrying out the in-flight heat treatment process to obtain a raw reactive metal powder; and forming, with the additive gas, a surface layer on the raw reactive metal powder, the raw reactive metal powder with the surface layer thereon, comprises less than 1000 ppm of at least one element from the additive gas, after sieving, separately stirring the separated raw material powder in a liquid. The surface layer comprises a first layer and a second layer, the first layer being a depletion layer deeper and thicker than the second layer, the second layer being a native oxide layer.

Aluminum based metal powders and methods of their production

Plasma atomization metal powder manufacturing processes and systems therefor

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 µm 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.

Reactive metal powders in-flight heat treatment processes

There are provided reactive metal powder in-flight heat treatment processes. For example, such processes comprise providing a reactive metal powder; and contacting the reactive metal powder with at least one additive gas while carrying out said in-flight heat treatment process, thereby obtaining a raw reactive metal powder.

Metal powder atomization manufacturing processes

There are provided reactive metal powder atomization manufacturing processes. For example, such processes can include mixing together an atomizing gas and at least one additive gas to obtain an atomization mixture; contacting a heated reactive metal source with said atomization mixture while atomizing said heated reactive metal source to produce a raw reactive metal powder having a surface layer thereon; sieving said raw reactive metal powder with said surface layer thereon to obtain a powder having a predetermined particle size; and contacting said powder having said predetermined particle size with water.

Graphenic carbon nanoparticles having a low polyaromatic hydrocarbon concentration and processes of making same

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight. Also provided are Graphene nanosheets having a polyaromatic hydrocarbon concentration of about 0.01% to about 0.5%.

Method for forming high quality powder for an additive manufacturing process

A powder treatment assembly and method for treating a feedstock powder of feedstock particles includes directing the feedstock powder into a plasma chamber within a reactor, exposing the feedstock powder to a plasma field generated by a plasma source to form a treated powder having treated particles with an increased average sphericity relative to the feedstock particles, and supplying a hot gas sheath flow downstream of the plasma chamber, the hot gas sheath flow substantially surrounding the treated powder.

Graphenic carbon nanoparticles having a low polyaromatic hydrocarbon concentration and processes of making same

Provided are graphene nanosheets having a polyaromatic hydrocarbon concentration of less than about 0.7% by weight and a tap density of less than about 0.08 g/cm3, as measured by ASTM B527-15 standard. The graphene nanosheets also have a specific surface area (B.E.T) greater than about 250 m2/g. Also provided are processes for producing graphene nanosheets as well as for removing polyaromatic hydrocarbons from graphene nanosheets, comprising heating said graphene nanosheets under oxidative atmosphere, at a temperature of at least about 200° C.