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Method and device for manufacturing metallic glass particles

A metallic glass and particle technology, which is applied in the field of metallic glass preparation, can solve the problems of uneven distribution of particle size, inconsistent thermal history, and low cooling rate, and achieve consistent thermal history, easy realization, and increased range of differential pressure Effect

Active Publication Date: 2014-10-15
GAOYOU INST CO LTD DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method and device for preparing metallic glass particles. The metallic glass particles are prepared by the pulse small hole spraying method. Due to the rapid solidification without a container, particles with uniform particle size and high sphericity are obtained, and The particle size is controllable and the preparation efficiency is high, which solves the problems of low cooling rate, uneven particle size distribution and inconsistent thermal history in the existing preparation process of metallic glass particles

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  • Method and device for manufacturing metallic glass particles
  • Method and device for manufacturing metallic glass particles
  • Method and device for manufacturing metallic glass particles

Examples

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Effect test

Embodiment 1

[0035] Such as figure 1 and 2A device used in a method for preparing metallic glass particles is shown, the device includes a vacuum system, a droplet ejection system, an image acquisition system and a particle collection device, the vacuum system includes a vacuum chamber 7, and the particle collection device is installed on The bottom of the vacuum chamber, the droplet injection system is installed on the top of the vacuum chamber, and is located directly above the particle collection device, the image acquisition system is connected to the vacuum chamber of the vacuum system, and the baffle 11 is movably installed on the droplet through the bracket 12 Between the injection system and the particle collection device, the purpose of setting the baffle plate is to remove particles that do not conform to the size at the beginning or form an oxide layer on the surface, so as to improve the yield of the product. Particles of different sizes are not mixed together.

[0036] The v...

Embodiment 2

[0051] Embodiment 2 is the same as the device and the preparation method of metallic glass particles in embodiment 1, and the different relevant parameters of the device and method of this embodiment are as follows:

[0052] (1) The small holes of the device are two holes distributed on a circular arc with the center of the ceramic sheet as the center, and the angle between the two holes is 180°, the aperture range of the small holes is 0.020mm, and the speed of preparing particles is 0.020 mm. 2 times that of Example 1.

[0053] (2) The vibration frequency of piezoelectric ceramics is 600Hz; the crucible and ceramic sheet are made of Al 2 o 3 ; The transmission rod is made of Al 2 o 3 .

[0054] (3) Step (1) charging: adding the metal to be prepared is Cu-Hf alloy.

[0055] (4) Step (2) evacuating: using a mechanical pump and a diffusion pump to evacuate the crucible and the vacuum chamber to 0.0009Pa.

[0056] (5) Step (3) molten metal: after the Cu-Hf alloy is complet...

Embodiment 3

[0059] Embodiment 3 is the same as the device and the preparation method of metallic glass particles in embodiment 1, and the different relevant parameters of the device and method of this embodiment are as follows:

[0060] (1) The small holes of the device are 4 holes distributed on a circular arc centered on the center of the ceramic sheet, and the angle between each hole is 90°, the small hole aperture range is 0.600mm, and the speed of preparing particles is 4 times that of Example 1.

[0061] (2) The vibration frequency of piezoelectric ceramics is 1200Hz; the making material of crucible 3 and ceramic sheet 9 is ZrO 2 , the transmission rod 2 is made of ZrO 2 .

[0062] (3) Step (1) charging: the metal to be prepared is Zr-Cu-Al alloy.

[0063] (4) Step (2) evacuating: using a mechanical pump and a diffusion pump to evacuate the crucible and the vacuum chamber to 0.0008Pa.

[0064] (5) Step (3) molten metal: the Zr-Cu-Al alloy is completely melted and then kept for 2...

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Abstract

The invention discloses a method and a device for manufacturing metallic glass particles, and belongs to the field of technologies for manufacturing metallic glass. The method includes generating stable differential pressures of 0-50KPa for metal melts in molten states under a vacuum condition; generating certain pulse signals for a piezoelectric ceramic to act on the metal melts; ejecting tiny liquid droplets from a hole in the bottom of a crucible; quickly cooling and solidifying the tiny liquid droplets without containers to form the spherical metallic glass particles. The device comprises a vacuum chamber. A particle collecting device is mounted at the bottom of the vacuum chamber, a liquid droplet ejecting system is mounted on the top of the vacuum chamber and is positioned right above the particle collecting device, and an image acquiring system is connected onto the vacuum chamber of a vacuum system. The method and the device have the advantages that the metallic glass particles are manufactured by a pulse hole ejecting process, the tiny liquid droplets are quickly solidified without the containers, accordingly, the particles with uniform and consistent particle sizes and high sphericity can be obtained, the particle sizes can be controlled, the manufacturing efficiency is high, and problems of low cooling speed, uneven particle size distribution, inconsistent thermal history and the like of an existing technology for manufacturing metallic glass particles can be solved.

Description

technical field [0001] The invention belongs to the technical field of metallic glass preparation, and in particular relates to a method for preparing metallic glass particles, and also relates to a preparation device thereof. Background technique [0002] When some liquid metal alloys are cooled very fast, the atoms inside the metal have no time to "straighten out" their positions, and they are still in a disordered state and immediately solidify into an amorphous metal. These amorphous metals have some glass-like structural features, so they are called "metallic glasses". The main advantage of metallic glass is that it has high strength, hardness, elasticity, and rigidity. Its strength and hardness are higher than those of existing general crystalline metals. It has wide application potential in the fields of machinery, communication, aerospace, medicine and so on. [0003] The demand for small parts with high precision, complex shape and structure, excellent mechanical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 董伟许富民赵丽李颖
Owner GAOYOU INST CO LTD DALIAN UNIV OF TECH
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