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Apparatus and method for preparing dispersion-strengthened copper matrix composites by droplet deposition reaction

A technology for dispersion-strengthening copper and deposition reaction is applied in the field of devices for preparing metal-matrix composite materials by droplet deposition reaction, and can solve the problem that it cannot be used for preparing dispersion-strengthening metal-matrix composite materials, and it is difficult to obtain dispersion-distributed nano-phase, atomization process, etc. The solidification process and chemical reaction process of droplets are difficult to control, etc.

Active Publication Date: 2016-06-22
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The atomization process, the solidification process of the droplets and the chemical reaction process of this method are difficult to control
[0007] In the process of research, the inventor found that the existing technology has the following limitations: (1) Among the two types of preparation methods for dispersion strengthened copper, it is difficult to obtain dispersed nanophases by direct external introduction method; the process of in-situ self-generation method is complicated , the pores are difficult to eliminate
(2) The droplet injection device does not involve the control of the atmosphere and cannot be used to prepare dispersion-strengthened metal matrix composites

Method used

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  • Apparatus and method for preparing dispersion-strengthened copper matrix composites by droplet deposition reaction
  • Apparatus and method for preparing dispersion-strengthened copper matrix composites by droplet deposition reaction
  • Apparatus and method for preparing dispersion-strengthened copper matrix composites by droplet deposition reaction

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Embodiment 1

[0045] Such as Figure 1-2 As shown, the droplet forming system includes a vacuum chamber 16 and a high vacuum chamber 19 sealedly connected with the vacuum chamber 16 from top to bottom; the vacuum chamber 16 has a built-in crucible 1, and a first heater 7 is arranged outside the crucible 1 The bottom of the crucible 1 is provided with a through hole, and the plunger 3 is arranged on the top of the through hole and passes through the cover plate 10 on the top of the vacuum chamber 16 to be connected with the first locator 4, and the first locator 4 is connected with the ultrasonic device 15; the first locator 4 is used to drive the plunger 3 up and down;

[0046] The reaction and solidification system includes a thermostatic chamber 2 that is hermetically connected to a high vacuum chamber 19. A rotary vibration table 18 is built in the bottom of the thermostatic chamber 2. The rotary vibration table 18 is connected to a second positioner 6, and the second positioner 6 is pla...

Embodiment 2

[0063] Such as Figure 3-4 As shown, in this embodiment, a simple crucible 1 structure is adopted, and the crucible 1 itself is sealed with a cover plate 10, and in this embodiment, the pre-pumping chamber 17 and the constant pressure chamber 9 are omitted, so that the structure of the whole system is more efficient. Simple and easy to implement.

Embodiment 3

[0065] A method for preparing dispersion-strengthened copper-based composite materials by droplet deposition reaction, comprising:

[0066] a. Prepare Cu-R alloy, wherein R is one or more of rare earth elements, Zr elements or Th elements;

[0067] b. Put the Cu-R alloy into a crucible in a vacuum environment, and heat the crucible to melt the Cu-R alloy into a liquid state; or put the Cu-R alloy into a closed vacuumized crucible, and heat the crucible Melt the Cu-R alloy into a liquid state;

[0068] c. In a vacuum environment, drop the molten Cu-R alloy liquid in a liquid state onto a crystallizer in a vacuum environment, keep the crystallizer in a high temperature state, and form a liquid film, and the inside of the vacuum environment in this step filled with protective atmosphere and oxygen;

[0069] d. The liquid film is kept at high temperature for a certain period of time to oxidize the R element in the liquid film to obtain a layer of oxide dispersion strengthened co...

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Abstract

A device for preparing dispersion-strengthened copper-based composite materials by droplet deposition reaction, including a droplet formation system, a reaction and solidification system, the droplet formation system is a vacuum environment, including a crucible heated by a first heater, the The crucible is in a high temperature state to melt the Cu-R alloy, and the bottom of the crucible is provided with a through hole that can be opened and closed; the reaction and solidification system is located directly below the droplet formation system; the reaction and solidification system is The vacuum environment includes a constant temperature chamber, and a crystallizer heated by a second heater is arranged inside the constant temperature chamber, and the through hole at the bottom of the crucible is vertically corresponding to the crystallizer. The invention can control the reaction of the alloy droplet and the gas phase by adjusting the gas phase composition and pressure, and form the dispersion-strengthened metal matrix composite material in situ; through point-by-point deposition and layer-by-layer thickening of the molten droplet, parts with complex shapes can be obtained. The invention also discloses a method for preparing dispersion-strengthened copper-based composite material by droplet deposition reaction.

Description

technical field [0001] The invention relates to the technical field of a device and a preparation method for preparing metal matrix composite materials by droplet deposition reaction. Background technique [0002] Dispersion-strengthened metal matrix composites add second-phase particles dispersedly distributed in the metal matrix, and the second-phase particles hinder the movement of dislocations, thereby improving the strength of the material. Common such as dispersion strengthened copper matrix and aluminum matrix composites. Reinforcing phases mainly include oxides, carbides, borides, nitrides and silicides. There are two main ways to introduce the reinforcement phase: direct external introduction and in-situ self-generation in the matrix (Liu Aihui et al., in-situ composite method to prepare high-strength and high-conductivity Al 2 o 3 / Cu Composite Materials, Material Heat Treatment Technology, 2011, 4). For the former, such as composite casting, the difference in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C9/00
Inventor 谢鲲曹梅青夏鹏成岳丽杰曾庆良
Owner SHANDONG UNIV OF SCI & TECH