In the porous substrate loaded with porous nano-particles structure and one-step micro-plasma production method thereof, since the micro-plasma system enhances the electron density and promotes reaction speed in the reaction without generating thermal effect, the method may be performed at an atmosphere environment. The nano-particles also can be quickly obtained by aforementioned micro-plasma system. The electromagnetic field generated by the micro-plasma can drive the nano-particles to be loaded onto the porous substrate in a one step, rapid and low cost process to improve the conventional techniques which require a relatively long procedure time and a complicated process.

Disclosed herein are embodiments of methods, devices, and assemblies for processing feedstock materials using microwave plasma processing. Specifically, the feedstock materials disclosed herein pertains to scrap materials, dehydrogenated or non-hydrogenated feed material, recycled used powder, and gas atomized powders. Microwave plasma processing can be used to spheroidize and remove contaminants. Advantageously, microwave plasma processed feedstock can be used in various applications such as additive manufacturing or powdered metallurgy (PM) applications that require high powder flowability.

Disclosed herein are embodiments of methods, devices, and assemblies for processing feedstock materials using microwave plasma processing. Specifically, the feedstock materials disclosed herein pertains to scrap materials, dehydrogenated or non-hydrogenated feed material, recycled used powder, and gas atomized powders. Microwave plasma processing can be used to spheroidize and remove contaminants. Advantageously, microwave plasma processed feedstock can be used in various applications such as additive manufacturing or powdered metallurgy (PM) applications that require high powder flowability.

Provides a method for producing aluminum oxide powder by electrochemical dissolving aluminum salt, comprise: (A) providing an electrochemical device with an aluminum material as an anode and an acidic solution as an electrolyte; (B) accelerating the dissolution of the aluminum material by current pulse method to form an acidic aluminum salt solution; (C) neutralizing the acidic aluminum salt solution with a basic solution to form an aluminum hydroxide sol; (D) adding an additive in the aluminum hydroxide sol, filtering the aluminum hydroxide sol and drying to obtain aluminum hydroxide powder; (E) roasting the aluminum hydroxide powder to form micron scale γ-aluminum oxide powder. Combines the acidic aluminum salt method and the electrochemical dissolution method to improve the dissolving rate of the aluminum material and increase the output efficiency of the acidic aluminum salt, and obtaining micron scale γ-aluminum oxide powder.

Provides a method for producing aluminum oxide powder by electrochemical dissolving aluminum salt, comprise: (A) providing an electrochemical device with an aluminum material as an anode and an acidic solution as an electrolyte; (B) accelerating the dissolution of the aluminum material by current pulse method to form an acidic aluminum salt solution; (C) neutralizing the acidic aluminum salt solution with a basic solution to form an aluminum hydroxide sol; (D) adding an additive in the aluminum hydroxide sol, filtering the aluminum hydroxide sol and drying to obtain aluminum hydroxide powder; (E) roasting the aluminum hydroxide powder to form micron scale γ-aluminum oxide powder. Combines the acidic aluminum salt method and the electrochemical dissolution method to improve the dissolving rate of the aluminum material and increase the output efficiency of the acidic aluminum salt, and obtaining micron scale γ-aluminum oxide powder.

The present invention provides an application method for cold field plasma discharge assisted high energy ball milled powder and a plasma assisted high energy ball milling device using the method for cold field plasma high energy ball milled powder. The present invention generates plasma by using dielectric barrier discharge and introducing a dielectric barrier discharge electrode bar into a high-speed vibrating ball milling tank, which requires that, on one hand, a solid insulation medium on the outer layer of the electrode bar can simultaneously bear high-voltage discharge and mechanical shock failure of the grinding ball, and on the other hand, the high-speed vibrating ball milling device can uniformly process the powder. Based on the ordinary ball milling technology, the discharge space pressure is set to a non-thermal equilibrium discharge state with a pressure of about 10.sup.2 to 10.sup.6 Pa, discharge plasmas are introduced to input another kind of effective energy to the processed powder, so as to accelerate refinement of the powder to be processed and promote the alloying process under the combined action of the mechanical stress effect and the thermal effect of the external electric field, thereby greatly improving the processing efficiency and the effect of the ball mill.

The present invention provides an application method for cold field plasma discharge assisted high energy ball milled powder and a plasma assisted high energy ball milling device using the method for cold field plasma high energy ball milled powder. The present invention generates plasma by using dielectric barrier discharge and introducing a dielectric barrier discharge electrode bar into a high-speed vibrating ball milling tank, which requires that, on one hand, a solid insulation medium on the outer layer of the electrode bar can simultaneously bear high-voltage discharge and mechanical shock failure of the grinding ball, and on the other hand, the high-speed vibrating ball milling device can uniformly process the powder. Based on the ordinary ball milling technology, the discharge space pressure is set to a non-thermal equilibrium discharge state with a pressure of about 10.sup.2 to 10.sup.6 Pa, discharge plasmas are introduced to input another kind of effective energy to the processed powder, so as to accelerate refinement of the powder to be processed and promote the alloying process under the combined action of the mechanical stress effect and the thermal effect of the external electric field, thereby greatly improving the processing efficiency and the effect of the ball mill.

The present invention relates to a method for manufacturing gold nanoparticles, including: (a) placing a gold (Au) target on a magnet cathode and injecting argon (Ar) gas to generate plasma; (b) discharging powder of a compound having an non-shared electron pair upwardly in parallel to a vertical rotation axis inside a stirrer, followed by circulating and agitating the same up and down; and (c) ejecting the gold particles and binding the same to the compound having the non-shared electron pair, as well as gold nanoparticles manufactured by the same.

The present invention relates to a method for obtaining gold nanoparticles bound to niacinamide through vacuum deposition, which is generally used to form a thin film, wherein niacinamide is used by circulating and agitating the same up and down under special conditions, so as to produce high purity gold nanoparticles in high yield.

The present invention relates to a method for manufacturing gold nanoparticles, including: (a) placing a gold (Au) target on a magnet cathode and injecting argon (Ar) gas to generate plasma; (b) discharging powder of a compound having an non-shared electron pair upwardly in parallel to a vertical rotation axis inside a stirrer, followed by circulating and agitating the same up and down; and (c) ejecting the gold particles and binding the same to the compound having the non-shared electron pair, as well as gold nanoparticles manufactured by the same.

The present invention relates to a method for obtaining gold nanoparticles bound to niacinamide through vacuum deposition, which is generally used to form a thin film, wherein niacinamide is used by circulating and agitating the same up and down under special conditions, so as to produce high purity gold nanoparticles in high yield.

The present invention relates to a method for manufacturing gold nanoparticles, including: (a) placing a gold (Au) target on a magnet cathode and injecting argon (Ar) gas to generate plasma; (b) discharging powder of a compound having an non-shared electron pair upwardly in parallel to a vertical rotation axis inside a stirrer, followed by circulating and agitating the same up and down; and (c) ejecting the gold particles and binding the same to the compound having the non-shared electron pair, as well as gold nanoparticles manufactured by the same.

The present invention relates to a method for obtaining gold nanoparticles bound to niacinamide through vacuum deposition, which is generally used to form a thin film, wherein niacinamide is used by circulating and agitating the same up and down under special conditions, so as to produce high purity gold nanoparticles in high yield.