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Gradient tungsten-copper composite and preparation method thereof

A composite material, tungsten-copper technology, applied in the field of gradient tungsten-copper composite material and its preparation, can solve problems such as no application, avoid forming cracks, ensure strength and precision, and improve conductivity.

Active Publication Date: 2017-03-08
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

However, there is no relevant application of this technology in the preparation of tungsten-copper composite materials.

Method used

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  • Gradient tungsten-copper composite and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, the gradient tungsten-copper composite material in this embodiment includes a tungsten skeleton 1 made by electron beam selective melting molding method and a copper filling phase 2 made by infiltration method. The tungsten skeleton 1 is arranged in multiple layers along its height direction. Each layer of tungsten skeleton 1 has a network porous structure, and the copper filling phase 2 is filled in the pores of each layer of tungsten skeleton 1, and the volume percentage of copper filling phase 2 increases or decreases layer by layer.

[0033] Such as figure 1 As shown, in the gradient tungsten-copper composite material of this embodiment, the tungsten skeleton 1 is represented by a grid-shaped black solid line, and the copper-filled phase 2 is represented by a gray filling color.

[0034] In this embodiment, the number of layers of the tungsten skeleton 1 is four layers, and the four-layer tungsten skeleton 1 is neatly stacked in the heigh...

Embodiment 2

[0048] Such as figure 1 As shown, the gradient tungsten-copper composite material in this embodiment includes a tungsten skeleton 1 made by electron beam selective melting molding method and a copper filling phase 2 made by infiltration method. The tungsten skeleton 1 is arranged in multiple layers along its height direction. Each layer of tungsten skeleton 1 has a network porous structure, and the copper filling phase 2 is filled in the pores of each layer of tungsten skeleton 1, and the volume percentage of copper filling phase 2 increases or decreases layer by layer.

[0049] Such as figure 1 As shown, in the gradient tungsten-copper composite material of this embodiment, the tungsten skeleton 1 is represented by a grid-shaped black solid line, and the copper-filled phase 2 is represented by a gray filling color.

[0050] In this embodiment, the number of layers of the tungsten skeleton 1 is four layers, and the four-layer tungsten skeleton 1 is neatly stacked in the heigh...

Embodiment 3

[0064] Such as figure 1 As shown, the gradient tungsten-copper composite material in this embodiment includes a tungsten skeleton 1 made by electron beam selective melting molding method and a copper filling phase 2 made by infiltration method. The tungsten skeleton 1 is arranged in multiple layers along its height direction. Each layer of tungsten skeleton 1 has a network porous structure, and the copper filling phase 2 is filled in the pores of each layer of tungsten skeleton 1, and the volume percentage of copper filling phase 2 increases or decreases layer by layer.

[0065] Such as figure 1 As shown, in the gradient tungsten-copper composite material of this embodiment, the tungsten skeleton 1 is represented by a grid-shaped black solid line, and the copper-filled phase 2 is represented by a gray filling color.

[0066] In this embodiment, the number of layers of the tungsten skeleton 1 is four layers, and the four-layer tungsten skeleton 1 is neatly stacked in the heigh...

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Abstract

The invention provides a gradient tungsten-copper composite. The gradient tungsten-copper composite comprises tungsten frameworks manufactured through an electron beam selective melting forming method and copper filling phases manufactured through an infiltration method. The tungsten frameworks are arranged in many layers in the height direction of the tungsten frameworks, and each layer of tungsten framework is of a net-shaped porous structure. Pores of the tungsten frameworks on all the layers are filled with the copper filling phases, and the volume percentage compositions of the copper filling phases are increased or decreased layer by layer. The invention further provides a method for preparing the gradient tungsten-copper composite. The tungsten frameworks in the tungsten-copper composite are prepared through the high-energy electron beam selective melting technology, and the structural strength of the tungsten frameworks is obviously higher than that of a structure prepared through a traditional sintering method; and the copper filling phases can be prepared by means of free model adjustment and combination with the copper infiltration technology, and finally flexibility and controllability of the structure and performance of the tungsten-copper composite can be achieved.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a gradient tungsten-copper composite material and a preparation method thereof. Background technique [0002] Tungsten-copper composite material is a functional composite material composed of two phases of tungsten and copper. It has the high electrical conductivity and thermal conductivity of copper, and the high melting point and low thermal expansion of tungsten. It is widely used as electrode material. Contact materials, electronic packaging materials, heat sink materials, etc. The electrical contact material is the contact element of the electrical switch, which is mainly responsible for the task of connecting and disconnecting the load current. The physical properties and electrical characteristics of the contact material directly determine the safety and reliability of the switch. The contact material used for high-voltage power transmission is th...

Claims

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Application Information

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IPC IPC(8): B22F3/11C22C1/04C22C27/04
CPCB22F3/1109C22C1/0475C22C27/04
Inventor 杨广宇汤慧萍刘楠刘海彦贾亮杨坤王建
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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