Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing nano-aluminum powder

A technology of nano-aluminum powder and production method, which is applied in the field of nano-materials, can solve the problems of low output and high cost, and achieve the effect of low output, high cost and light oxidation

Active Publication Date: 2015-01-07
JIANGSU BOQIAN NEW MATERIALS
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the production method of nano aluminum powder is mainly ion sputtering method, but this method has low output and high cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing nano-aluminum powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put a 3Kg pure aluminum block into the crucible of a high-temperature metal evaporator, install the plasma generator, check the airtightness, pump the vacuum, and pour in an inert gas (argon) to make the whole system under an inert gas atmosphere, and control the crucible The internal pressure is 0.12MPa, start the plasma generating device, the power of the plasma transfer arc is increased to 70KW, the aluminum block melts into a metal liquid, observe the height of the metal liquid level, adjust the feed rate to 1.5Kg / h, and the plasma transfer arc Under the action, the raw material is heated into aluminum vapor, and the evaporated aluminum vapor is cooled by the cooling gas (argon) and sent to the particle controller. After the aluminum vapor is cooled by the cooling gas, the steam is condensed into nano-aluminum powder, and the nano-aluminum powder and gas pass through the gas After the solid separator, nano-aluminum powder is deposited on the inner wall of the gas-sol...

Embodiment 2

[0024] Put a 3Kg pure aluminum block into the crucible of a high-temperature metal evaporator, install the plasma generator, check the airtightness, pump the vacuum, and pour in an inert gas (argon) to make the whole system under an inert gas atmosphere, and control the inside of the crucible The pressure is 0.15MPa, start the plasma generating device, the power of the plasma transfer arc is increased to 90KW, the aluminum block melts into a metal liquid, observe the height of the metal liquid level, adjust the feed rate to 3.0Kg / h, and the plasma transfer arc will The raw material is heated into aluminum vapor, and the evaporated aluminum vapor is cooled by the cooling gas and sent to the particle controller. The aluminum vapor is cooled by the cooling gas, and the aluminum vapor is condensed into nano-aluminum powder by cooling the cooling gas. After the gas-solid separator, nano-aluminum powder is deposited on the inner wall of the separator, and the gas is pumped out of the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for producing nano-aluminum powder, and the method comprises the following steps of: putting aluminum in a crucible of a high-temperature metal evaporator, and melting the aluminum into liquid by taking a plasma transferred arc as a heating source, wherein the heating power of the plasma transferred arc is 50-150KW; starting to continuously feed into the crucible of the high-temperature metal evaporator, wherein the feed rate is 0.3-5.0Kg / h; cooling the evaporated aluminum vapor by using cooling gas, outputting the cooled aluminum vapor to a particle controller, continuing cooling the aluminum vapor in the particle controller, turning the vapor into a solid state and forming the nano-aluminum powder with the particle diameter of 10-1000 nanometers; and cooling the nano-aluminum powder to below 100 DEG C via a gas-solid separator under the carry of gas, depositing cooled nano-aluminum powder in the gas-solid separator and collecting the nano-aluminum powder into a nano-aluminum powder collector so as to obtain the nano-aluminum powder, wherein the gas is recycled or vent after being cooled. The method disclosed by the invention has the advantages of fine particle diameter, slight oxidation, high content of active aluminum and high yield.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a production method of nanometer aluminum powder. Background technique [0002] Nano-aluminum powder is a high-efficiency rocket fuel catalyst and has important applications in the aerospace field. Replacing the aluminum powder in the solid propellant formula with nano-aluminum powder can change its combustion performance and detonation heat value. Nano-aluminum powder is extremely active and oxidizes immediately when in contact with air. At present, the production method of aluminum powder is mainly the nitrogen atomization method. Specifically, the aluminum ingot is melted into aluminum liquid, and then high-pressure nitrogen gas is used to impact the aluminum liquid column at high speed, so that the aluminum liquid is atomized into tiny droplets and solidified into aluminum powder. The aluminum powder produced by this method has a relatively coarse particle size,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/12
Inventor 陈钢强高书娟赵登永
Owner JIANGSU BOQIAN NEW MATERIALS