Tungsten-copper composite material and preparation method thereof

A composite material, tungsten-copper technology, applied in the field of tungsten-copper composite materials and its preparation, can solve the problems of insufficient continuous and uniform material structure, poor ablation resistance, etc., to achieve enhanced ablation resistance, enhanced strength, and improved uniformity of structure The effect of sex and density

Inactive Publication Date: 2017-12-22
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention patent of "a gradient tungsten-copper composite material and its preparation method" with the application publication number CN106475563A discloses a tungsten tungsten composed of a tungsten skeleton with a multi-layer network porous structure and a copper filling phase whose volume content changes layer by layer. Copper composite material, the tungsten-copper composite material is prepared by high-energy electron beam selective melting method and copper infiltration method, the structure and performance are flexible and controllable, and the strength and conductivity are improved, but the tungsten skeleton structure in the tungsten-copper composite Gradient change, the copper filling phase is easy to be enriched in a large amount in the tungsten skeleton with a large porosity, resulting in a non-continuous and uniform material structure, and poor ablation resistance when used as an electrical contact material

Method used

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  • Tungsten-copper composite material and preparation method thereof
  • Tungsten-copper composite material and preparation method thereof
  • Tungsten-copper composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0040] This embodiment includes the following steps:

[0041] Step 1. The tungsten skeleton 1 is prepared by electron beam selective melting and forming, and the specific process is as follows:

[0042] Step 101, using three-dimensional modeling software to establish a three-dimensional model of the tungsten skeleton 1, the size of the tungsten skeleton 1 is 20mm×20mm×20mm, and the porosity is 40%;

[0043] Step 102, slice the three-dimensional model of the tungsten skeleton 1 established in step 101 by slice software, the thickness of each slice is 50 μm, obtain the slice data, and then import the slice data into the electron beam selective melting forming equipment;

[0044]Step 103: Spread the tungsten powder on the bottom plate of the electron beam selective melting forming equipment according to the slice data in the electron beam selective melting forming equipment, and use the electron beam to perform selective melting of the tungsten powder to form a single-layer solid...

Embodiment 2

[0055] This embodiment includes the following steps:

[0056] Step 1. The tungsten skeleton 1 is prepared by electron beam selective melting and forming method, and the specific process is as follows:

[0057] Step 101, using three-dimensional modeling software to establish a three-dimensional model of the tungsten skeleton 1, the size of the tungsten skeleton 1 is 20mm×20mm×20mm, and the porosity is 45%;

[0058] Step 102, slice the three-dimensional model of the tungsten skeleton 1 established in step 101 by using layer-slicing software, the thickness of each slice is 100 μm, and obtain layer-slicing data, and then import the layer-slicing data into the electron beam selective melting forming equipment;

[0059] Step 103: Spread the tungsten powder on the bottom plate of the electron beam selective melting forming equipment according to the slice data in the electron beam selective melting forming equipment, and use the electron beam to perform selective melting of the tungs...

Embodiment 3

[0067] This embodiment includes the following steps:

[0068] Step 1. The tungsten skeleton 1 is prepared by electron beam selective melting and forming method, and the specific process is as follows:

[0069] Step 101, using three-dimensional modeling software to establish a three-dimensional model of the tungsten skeleton 1, the size of the tungsten skeleton 1 is 20mm×20mm×20mm, and the porosity is 50%;

[0070] Step 102, slice the three-dimensional model of the tungsten skeleton 1 established in step 101 by slice software, the thickness of each slice is 70 μm, obtain the slice data, and then import the slice data into the electron beam selective melting forming equipment;

[0071] Step 103: Spread the tungsten powder on the bottom plate of the electron beam selective melting forming equipment according to the slice data in the electron beam selective melting forming equipment, and use the electron beam to perform selective melting of the tungsten powder to form a single-lay...

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Abstract

The invention provides a tungsten-copper composite material. The tungsten-copper composite material comprises a tungsten framework, tungsten porous bodies and a copper filling phase. The tungsten framework has a porous three-dimensional dot matrix structure. The tungsten porous bodies fill the pores of the tungsten framework. Pores are arranged between the tungsten porous bodies and the tungsten framework. The copper filling phase fills the pores of the tungsten porous bodies and the pores between the tungsten porous bodies and the tungsten framework. The composite structure formed by the tungsten porous bodies and the tungsten framework improves the strength of the tungsten-copper composite material. The copper filling phase is uniformly distributed in the pores of the tungsten porous bodies and the pores between the tungsten porous bodies and the tungsten framework, so that the anti-ablation performance of the tungsten-copper composite material is enhanced. The invention also provides a preparation method of the tungsten-copper composite material. The preparation method comprises the following steps of: firstly, preparing the tungsten framework by means of a method of fusion forming in a high energy bundle selecting region; then filling tungsten powder into the tungsten framework to form the tungsten porous bodies by means of an isostatic cool pressing method and a high-temperature sintering process; and then combining with a copper infiltration method to prepare the copper filling phase. The method is high in precision and efficient and reliable.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a tungsten-copper composite material and a preparation method thereof. Background technique [0002] Tungsten-copper composite materials are widely used in the fields of electric power, electronics, machinery and metallurgy, especially in various types of high-voltage electrical switches, because they have the advantages of high electrical conductivity and thermal conductivity of copper, high-temperature strength of tungsten, and strong resistance to arc ablation. It has important applications in electrical contacts. The working voltage of high-voltage electrical appliances is high, and the switching times are many. Under high temperature, the electrical wear and mechanical wear are serious, and the wear can easily lead to deformation and fracture of electrical contact materials and misalignment of arc burning positions. At present, most tungsten-copper ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/04B22F3/10B22D23/04B33Y10/00
CPCB22D23/04B22F3/04B22F3/1007B22F3/1035B33Y10/00B22F2999/00B22F2998/10B22F10/00B22F10/66B22F10/28B22F10/64B22F10/60B22F10/68B22F2201/013B22F2201/20B22F3/004Y02P10/25
Inventor 杨广宇刘楠刘海彦贾亮杨坤
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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