Tungsten enhancement copper composite and preparing method thereof

A composite material and copper powder technology, which is applied in the preparation of tungsten reinforced copper composite materials and the field of tungsten reinforced copper composite materials, can solve the problems such as the inability to form a network interconnection structure, the difficulty of maintaining the skeleton phase of tungsten, and the difficulty of metallurgical bonding of the tungsten phase. Achieve the effect of good practical value, precise and controllable size, and good conduction effect

Inactive Publication Date: 2020-07-14
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a tungsten-reinforced copper composite material, which solves the problem that less tungsten and more copper are easy to cause the skeleton phase tungsten to be difficult to maintain in the existing tungsten-copper composite material
[0005] The second object of the present invention is to provide a method for preparing tungsten-reinforced copper composite materials, which solves the problems of difficult metallurgical combination of tungsten phases in the existing preparation methods, inability to form a network interconnected structure, and uneven distribution of tungsten-copper phases.

Method used

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  • Tungsten enhancement copper composite and preparing method thereof
  • Tungsten enhancement copper composite and preparing method thereof
  • Tungsten enhancement copper composite and preparing method thereof

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preparation example Construction

[0042] A preparation method of tungsten reinforced copper composite material, comprising the following steps:

[0043] Step 1, select raw materials

[0044] According to the volume fraction, weigh the following components, the copper powder is not less than 50%, the balance is tungsten powder, and the sum of the volume percentages of the above components is 100%;

[0045] Step 2, preparing a porous tungsten skeleton;

[0046] Step 2.1, place the tungsten powder in step 1 in the powder loading chamber of the laser selective melting equipment, input the prefabricated porous tungsten skeleton model, start the laser selective melting equipment to print, the diameter of the spot is 45-100 μm, and the scanning method is checkerboard. One time of powder is selected by laser melting once, the scanning distance is 60μm, the scanning speed is 550-650mm / s, the thickness of the powder layer is 25μm, the laser power is 70W-100W, and the laser energy is 80-130J / mm 3 , continuous inert gas...

Embodiment 1

[0062] Objective: To prepare anisotropic copper-tungsten composite material, wherein the volume ratio of Cu is 60vol.%, and the volume ratio of W powder is 40vol.%.

[0063] Step 1, select raw materials

[0064] According to the volume fraction, weigh the following components, copper powder 60vol.%, the balance is tungsten powder, the particle size of pure tungsten powder is 15-53 μm, and the sum of the volume percentages of the above components is 100%;

[0065] Step 2, preparing a porous tungsten skeleton;

[0066] Step 2.1, place the tungsten powder in step 1 in the powder bin of the laser selective melting equipment, try to keep the upper surface of the powder in the bin as flat as possible, input the prefabricated porous tungsten skeleton model, and start the laser selective melting equipment to print, the spot diameter is 100 μm , the scanning method is checkerboard, every time the powder is laid, the laser selection is melted once, the scanning distance is 60μm, the sc...

Embodiment 2

[0079] Objective: To prepare anisotropic copper-tungsten composite material, wherein the volume ratio of Cu is 90vol.%, and the volume ratio of W powder is 10vol.%.

[0080] Step 1, select raw materials

[0081] According to the volume fraction, weigh the following components, the volume ratio of copper powder Cu is 90vol.%, the balance is tungsten powder, and the sum of the volume percentages of the above components is 100%;

[0082] Step 2, preparing a porous tungsten skeleton;

[0083] Step 2.1, place the tungsten powder in step 1 in the powder loading bin of the laser selective melting equipment, input the prefabricated porous tungsten skeleton model, start the laser selective melting equipment to print, the diameter of the spot is 80 μm, the scanning method is checkerboard, and the powder is laid once The laser selects melting once, the scanning distance is 60μm, the scanning speed is 600mm / s, the thickness of the powder layer is 25μm, the laser power is 100W, and the la...

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Abstract

The invention discloses a tungsten enhancement copper composite. The tungsten enhancement copper composite comprises following components including, by volume fraction, no less than 50% of copper powder and the balance tungsten powder, and the sum of the volume percents of the components is 100%, and the invention further discloses a preparing method of the tungsten enhancement copper composite. According to the tungsten enhancement copper composite, a proportion of less tungsten and much copper is adopted, the high-temperature characteristics of refractory metal tungsten and high-conductivitycharacteristics of low-melting-point metal copper are sufficiently exerted, particular needs of high temperature resistance and good conduction can be met, according to the preparing method, the selective laser melting technology is adopted for preparing a porous tungsten framework, the tungsten framework pore shape, number and size are precisely controllable, the tungsten skeleton metallurgicalbonding is adopted, the strength is high, isotropy is achieved, a network shape is formed, bonding phase copper is sufficiently filled in the porous tungsten framework through the melt infiltration technology, the high-compactness tungsten enhancement copper composite used under multiple environments can be prepared, and good practical value is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal composite materials, and in particular relates to a tungsten-reinforced copper composite material, and also relates to a preparation method of the tungsten-reinforced copper composite material. Background technique [0002] Tungsten-copper composite material is a typical pseudo-alloy system. The constituent tungsten has a high melting point (3420°C), high strength, arc ablation resistance, high electrical conductivity (174W / m K), and low nuclear fuel retention rate; Component copper has the characteristics of high electrical conductivity and high thermal conductivity (about 400W / m·K at room temperature). It can be seen from the phase diagram that copper and tungsten have no intermediate phase, which on the one hand enables the respective characteristics of the two component metals to be brought into play; on the other hand, different performance requirements can be obtained by adjusting different co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C27/04C22C1/04B22F3/11C25D3/38B22F3/10B33Y10/00B33Y70/00
CPCB22F3/1035B22F3/11B33Y10/00B33Y70/00C22C1/0425C22C1/045C22C9/00C22C27/04C25D3/38
Inventor 陈文革周凯
Owner XIAN UNIV OF TECH
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