A kind of preparation method of metal/ceramic composite porous material

A technology of porous material and ceramic composite, applied in the field of metal matrix composite material preparation, can solve the problem of large difference in process route, achieve the effect of low cost, good electromagnetic shielding performance, and ensure process safety

Active Publication Date: 2020-09-25
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the different matrix materials selected for these porous materials, the process routes for preparation are quite different.

Method used

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  • A kind of preparation method of metal/ceramic composite porous material
  • A kind of preparation method of metal/ceramic composite porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a metal / ceramic composite porous material, comprising the following steps:

[0037] (1) the first perforated plate, Al 2 o 3 The hollow ball, the second perforated plate, and the LZ91 magnesium-lithium alloy substrate are put into the package in this order, and the first perforated plate, the second perforated plate and the package wall are fixed by argon arc welding, and the package is fixed by argon arc welding. The cover is sealed well, wherein the apertures on the first perforated plate and the second perforated plate are smaller than the diameter of the hollow sphere, and the apertures on the first perforated plate and the second perforated plate are 3.5mm, Al 2 o 3 The diameter of the hollow ball is 4mm. The first perforated plate and the second perforated plate divide the space in the sheath into three areas. The height H1 of the uppermost area is equal to the height H2 of the lowermost area. airway and second airway;

[0038] (2) The s...

Embodiment 2

[0050] A method for preparing a metal / ceramic composite porous material, comprising the following steps:

[0051] (1) Put the first perforated plate, SiC hollow sphere, second perforated plate, and aluminum alloy matrix into the package according to this order. After adding the aluminum alloy matrix, use argon arc welding to weld the first perforated plate and the second perforated plate It is fixed with the sheath wall, and the sheath is sealed by argon arc welding, wherein the apertures on the first perforated plate and the second perforated plate are smaller than the diameter of the hollow sphere, and the apertures on the first perforated plate and the second perforated plate are 1.5mm, the diameter of the SiC hollow ball is 2mm, the first perforated plate and the second perforated plate divide the space inside the sheath into three areas, the height H1 of the uppermost layer is equal to the height H2 of the lowermost area, and the outer part of the sheath connected with a ...

Embodiment 3

[0064] A method for preparing a metal / ceramic composite porous material, comprising the following steps:

[0065] (1) The first perforated plate, the AlN hollow sphere, the second perforated plate, and the aluminum-lithium alloy substrate are packed into the package according to this order, wherein the apertures on the first perforated plate and the second perforated plate are smaller than the diameter of the hollow sphere, The hole diameter of the first perforated plate and the second perforated plate is 4.5 mm, and the diameter of the AlN hollow sphere is 5 mm. The first perforated plate and the second perforated plate divide the space in the envelope into three areas, and the height of the uppermost zone is H1 It is equal to the height H2 of the lowest layer area, and the outer part of the sheath is connected with a first air guide tube and a second air guide tube;

[0066] (2) The sealed bag is connected to the loading gas source and the vacuum unit through the first valve...

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Abstract

The invention relates to a method for preparing a metal / ceramic composite porous material. The method uses aluminum alloys, aluminum-lithium alloys, magnesium alloys, magnesium-lithium alloys, etc. as metal substrates, SiC hollow spheres, Al 2 o 3 Hollow sphere, Al 2 o 3 / SiO 2 Hollow spheres, etc. are hollow sphere materials. First, the metal matrix is ​​melted, and then the molten metal penetrates through the stacked ceramic hollow spheres. During this process, the molten metal will adhere to the surface of the hollow sphere or accumulate between the hollow spheres. During the period, the thickness of the metal on the surface or between the hollow spheres can be controlled through repeated infiltration. After cooling to room temperature, the ceramic hollow spheres will be effectively connected, thereby preparing a metal / ceramic composite porous material.

Description

technical field [0001] The invention relates to the technical field of preparing metal matrix composite materials, in particular to a method for preparing metal / ceramic composite porous materials. Background technique [0002] Porous material is a new type of material with a large number of pores inside. According to the difference of its matrix material, there are metal porous material, ceramic porous material and so on. Different porous materials have different performance characteristics. For example, metal porous materials have the characteristics of light weight, high specific strength, energy absorption and shock absorption, noise reduction and noise reduction, and electromagnetic shielding, while ceramic porous materials have good chemical and thermal stability and heat resistance. nice feature. Therefore, combining metal and ceramics to form a new type of porous material will have more excellent comprehensive properties. [0003] At present, there are many kinds of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08
CPCC22C1/08C22C1/081
Inventor 王耀奇褚楚李红侯红亮
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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