Equipment and method for preparing alloy nanoparticles by electric arc method

A technology of alloy nanoparticles and arc method, applied in the direction of nanotechnology, can solve the problems of difficult adjustment and control, low work efficiency, low alloy powder content, etc., and achieve novel structure, simple and effective operation, and narrow particle size distribution Effect

Pending Publication Date: 2022-03-11
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the existing equipment is difficult to adjust and control these parameters, and the alloy nano powder cannot be prepared continuously for a long time, the content of the alloy powder is low, and the work efficiency is low, a method for preparing alloy nano particles by the arc method is proposed. Equipment and methods

Method used

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  • Equipment and method for preparing alloy nanoparticles by electric arc method
  • Equipment and method for preparing alloy nanoparticles by electric arc method
  • Equipment and method for preparing alloy nanoparticles by electric arc method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] ①. Put the alloy block (such as: CuAl) cake to be evaporated with a diameter of 39 mm and a height of 14 mm, and place five tungsten sheets of a diameter of 3 mm and a height of 1 mm on the water-cooled anode, and a water-cooled and ventilated cathode tungsten rod with a diameter of 4 mm and a length of 115 mm as the cathode head; Turn on the circulating water and the power supply, and use the mechanical pump and the molecular pump unit to vacuumize the vapor deposition chamber 8 and the sealing chamber 9 to 2×10 -1 Pa's environment. Then vapor deposition chamber 8 and sealing chamber 9 are filled with argon gas, cleaned 2-3 times, and finally vacuumized to 2 × 10 -3 Pa's environment;

[0048] ② Fill in hydrogen-argon mixed gas, the total pressure of hydrogen-argon mixed gas is 9.5×10 4 Pa, where the pressure ratio of argon to hydrogen is P Ar :P H2 = 1:1;

[0049] ③. Turn on the temperature-controllable columnar heater, adjust the temperature to 500°C, start the c...

Embodiment 2

[0053] ①. Put the alloy block (such as: CuAl) cake to be evaporated φ40mm, 15mm high, and place two φ4mm, 1mm high tungsten sheets in the middle on the water-cooled anode, and the water-cooled and ventilated cathode tungsten rod φ5mm, 120mm long as the cathode head ; Turn on the circulating water and the power supply, and utilize the mechanical pump and the molecular pump unit to vacuumize the vapor deposition chamber 8 and the sealing chamber 9 to 2×10 -1 Pa's environment. Then vapor deposition chamber 8 and sealing chamber 9 are filled with argon gas, cleaned 2-3 times, and finally vacuumized to 2 × 10 -3 Pa's environment;

[0054] ② Fill in hydrogen-argon mixed gas, the total pressure of hydrogen-argon mixed gas is 9.5×10 4 Pa, where the pressure ratio of argon to hydrogen is P Ar :P H2 =2:1;

[0055] ③. Turn on the temperature-controllable column heater, adjust the temperature to 800°C, start the circulation pump, and then adjust the cathode ventilation to 30 sccm;

...

Embodiment 3

[0059] ①. Put the alloy block (such as: CuAl) to be evaporated (such as: CuAl) cake with a diameter of 41mm and a height of 16mm, and place five tungsten sheets of a diameter of 4mm and a height of 1.5mm in the middle on the water-cooled anode, and a water-cooled and ventilated cathode tungsten rod of dia. ; Turn on the circulating water and the power supply, and utilize the mechanical pump and the molecular pump unit to vacuumize the vapor deposition chamber 8 and the sealing chamber 9 to 2×10 -1 Pa's environment. Then vapor deposition chamber 8 and sealing chamber 9 are filled with argon gas, cleaned 2-3 times, and finally vacuumized to 2 × 10 -3 Pa's environment;

[0060] ② Fill in hydrogen-argon mixed gas, the total pressure of hydrogen-argon mixed gas is 9.5×10 4 Pa, where the pressure ratio of argon to hydrogen is P Ar :P H2 =4:1;

[0061] ③. Turn on the temperature-controllable column heater, adjust the temperature to 1000°C, start the circulation pump, and then ad...

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Abstract

The invention discloses equipment and a method for preparing alloy nanoparticles by an arc method. The upper part of the equipment is provided with a vapor deposition chamber, the vapor deposition chamber is connected with a sealing chamber, the outer wall of the vapor deposition chamber is provided with a heater, the vapor deposition chamber is connected with a water-cooling anode and a water-cooling ventilation cathode, and the lower part of the vapor deposition chamber is inserted into a trapping chamber through a conical trapping tank. The vapor deposition chamber is connected with the molecular pump and the mechanical pump through valves; and the mechanical pump, the molecular pump and the heater are connected with a power supply and a control cabinet. A large number of alloy nanoparticles can be continuously prepared; the arc shape is controllable, the particle size distribution of the powder is narrow, and the content of generated alloy nanoparticles is controllable; the alloy nanoparticles are novel in structure and simple and effective to operate; alloy nanoparticles can be prepared from different elements according to the principle.

Description

technical field [0001] The invention belongs to the technical field of new material preparation, and relates to a device and a method for preparing alloy nanoparticles by an arc method. Background technique [0002] The advent of alloy nanoparticles will greatly expand the scope of research and application in the field of nanomaterials. Theoretically, the controlled integration of a variety of elements with very different properties in nanoparticles will bring more changes and possibilities to the performance of nanoparticles. It is a very big challenge to control multiple incompatible elements to prepare nanoparticles at the nanoscale. By adjusting parameters such as arc current, voltage, atomic collision frequency, moving direction, and surrounding temperature, the chemical composition, size, and phase composition (solid solution or phase separation) of nanoparticles can be well controlled. However, the existing equipment is difficult to adjust and control these paramete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/14B22F9/12B82Y40/00
CPCB22F9/14B22F9/12B82Y40/00
Inventor 李志杰史桂梅包立夫张洪伟赵丹娜王馨月王福春修先毅
Owner SHENYANG POLYTECHNIC UNIV
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