W/Cu functionally gradient material and preparation method thereof

A technology of functionally graded materials and gradient materials, which is applied in the field of additive manufacturing technology and powder metallurgy, can solve problems such as functional defects, difficulty in meeting design requirements of materials, and difficulty in accurately controlling the pore distribution of W skeleton, etc., achieving short processing cycle and high efficiency , high precision effect

Inactive Publication Date: 2019-05-03
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the preparation of W skeleton, it is difficult to precisely control the pore distribution of W skeleton by traditional sintering, organic dissolution, and boiling and dissolving pores, and it is difficult to obtain a gradient material in the strict sense of 0-100%, which makes it difficult for the formed material to meet the design requirements. requirements, resulting in functional defects

Method used

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  • W/Cu functionally gradient material and preparation method thereof
  • W/Cu functionally gradient material and preparation method thereof
  • W/Cu functionally gradient material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0050] Please refer to figure 1 , the embodiment of the present invention provides a preparation method of W / Cu functionally graded material based on 3D printing, comprising the following steps:

[0051] 1) Create a 3D model of the porous tungsten skeleton through magics20.03, slice and layer the 3D model of the porous tungsten skeleton. The size of the 3D model of the single-layer porous tungsten skeleton is 20mm*20mm*1mm. cross, figure 2 It is a schematic diagram of a three-dimensional cross unit body of a single layer of a porous tungsten skeleton three-dimensional model in an embodiment of the present invention, image 3 It is a schematic diagram of the single-layer structure of the three-dimensional model of the porous tungsten skeleton in the embodiment of the present invention.

[0052] Merge the single layers established one by one into a three-layer gradient tungsten skeleton 3D model, and import the data into the 3D printing device; in the established tungsten ske...

Embodiment 2

[0061] The embodiment of the present invention provides a method for preparing a W / Cu functionally graded material based on 3D printing, comprising the following steps:

[0062] 1) Create a 3D model of the porous tungsten skeleton through magics20.03, slice and layer the 3D model of the porous tungsten skeleton. The size of the 3D model of the single-layer porous tungsten skeleton is 20mm*20mm*1mm. cross.

[0063] Merge the established single layers one by one into a four-layer gradient tungsten skeleton three-dimensional model, and import the data into the 3D printing device; in the established three-dimensional tungsten skeleton model, the porosity ratio is controlled by changing the size of the three-dimensional cross unit, so as to ensure that the permeability Gradient change of W / Cu mass after copper.

[0064] Weigh tungsten powder, the tungsten powder is spherical or nearly spherical, the average particle size is 15 μm ~ 40 μm, and the purity is 99.9%. When 3D printing,...

Embodiment 3

[0072] The embodiment of the present invention provides a method for preparing a W / Cu functionally graded material based on 3D printing, comprising the following steps:

[0073] 1) Create a 3D model of the porous tungsten skeleton through magics20.03, slice and layer the 3D model of the porous tungsten skeleton. The size of the 3D model of the single-layer porous tungsten skeleton is 20mm*20mm*1mm. cross.

[0074] Merge the single layers built one by one into a five-layer gradient tungsten skeleton three-dimensional model, and import the data into the 3D printing device; in the established three-dimensional tungsten skeleton model, the porosity ratio is controlled by changing the size of the three-dimensional cross unit, so as to ensure Gradient change of W / Cu mass after copper.

[0075] Weigh tungsten powder, the tungsten powder is spherical or nearly spherical, the average particle size is 15 μm ~ 40 μm, and the purity is 99.9%. When 3D printing, first set the forming param...

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Abstract

The invention discloses a W / Cu functionally gradient material and a preparation method thereof, and belongs to the fields of additive manufacturing technology and powder metallurgy. In terms of structure, the W / Cu functionally gradient material comprises a pure tungsten substrate on one side and a pure copper substrate on the other side, a gradient material is formed through copper infiltration ofa porous tungsten skeleton to connect the two substrates, wherein the porous tungsten skeleton is prepared by 3D printing, and then the porous tungsten skeleton copper infiltrated gradient material is prepared by a copper infiltration method; and the gradient material is prepared from the elements in percentage by mass: 50% of W and 50% of Cu. The W / Cu functionally gradient material adopts a digitalized additive manufacturing technology, a porous tungsten skeleton complex structure can be quickly formed, uniform distribution and mass gradient distribution of tungsten skeleton pores can be accurately controlled, and thus a novel technology means for preparing a properW / Cu functionally gradient material is provided.

Description

technical field [0001] The invention belongs to the fields of additive manufacturing technology and powder metallurgy, and in particular relates to a W / Cu functionally graded material and a preparation method thereof. Background technique [0002] With the development of modern science and technology, the requirements for working materials in special environments are increasing, and the properties of ordinary ceramics, metals and composite materials have been difficult to meet the performance requirements under harsh conditions. Under such conditions, functionally graded materials emerge as the times require, which cross-infiltrates material science with physics, chemistry, computer and other disciplines, and introduces new theoretical techniques and experimental techniques. Functionally graded material (FGM) refers to continuously changing the structure, composition, density, etc. of two or more materials with different properties, so that the internal interface is reduced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F7/02C22C9/00C22C27/04
Inventor 周燕文世峰甘杰段隆臣杨展方小红谭松成
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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