Aluminum-based porous composite material as well as preparation method and application thereof

A composite material and aluminum-based porous technology, which is applied in the field of gradient composite materials, can solve problems such as the collapse of micro-region components, unsatisfactory energy absorption capacity of aluminum-based porous composite materials, and failure to fully exert the performance of components, etc., to achieve Strong designability and excellent cushioning and energy-absorbing performance

Active Publication Date: 2021-07-02
GUANGDONG INST OF NEW MATERIALS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the energy absorption capacity of the existing aluminum-based porous composite materials is not ideal, especially when subjected to impact loads, each micro-domain component tends to collapse instantaneously, and the performance of each internal component cannot be fully utilized.

Method used

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  • Aluminum-based porous composite material as well as preparation method and application thereof
  • Aluminum-based porous composite material as well as preparation method and application thereof
  • Aluminum-based porous composite material as well as preparation method and application thereof

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preparation example Construction

[0024] The embodiment of the present invention provides a method for preparing an aluminum-based porous composite material, please refer to figure 1 , including the following steps:

[0025] (1) Preparation of composite raw materials

[0026] Multiple groups of composite raw materials are prepared according to the pre-gradient design, and each group of composite raw materials includes aluminum alloy powder and hollow microspheres. Gradient design is to make the parameters of multiple groups of composite materials different. The parameters include volume fraction of hollow microspheres, particle size distribution of aluminum alloy powder, particle size distribution of hollow microspheres, composition of aluminum alloy powder and hollow microspheres. The composition of the ball. In the actual gradient design, at least one of the above indicators may be different, or two or more indicators may be different, and targeted design can be carried out according to the application env...

Embodiment 1

[0056] This embodiment provides a method for preparing an aluminum-based porous composite material, including:

[0057] (1) Preparation of composite raw materials: According to the volume fraction of hollow microspheres of 20%, 40% and 60%, the mesh particle size is 60-150 mesh Al 2 o 3 Ceramic hollow microspheres, respectively mixed with 200-400 mesh 1100 aluminum powder, 6061 aluminum powder and 6063 aluminum powder, the volume fraction of hollow microspheres corresponding to 6061 aluminum powder is 20%, and the volume fraction of hollow microspheres corresponding to 6063 aluminum powder is 40% %, the volume fraction of hollow microspheres corresponding to 1100 aluminum powder is 60%; each group of raw materials is put into the blender and mixed for 2h, and then adding mass fraction is 5% dehydrated alcohol (that is, accounting for the total volume of hollow microspheres and aluminum powder 5% of the mass) mixed for 4h.

[0058] (2) Cold press forming of the prefabricated ...

Embodiment 2

[0063] This embodiment provides a method for preparing an aluminum-based porous composite material, including:

[0064] (1) Preparation of composite raw materials: According to the volume fraction of hollow microspheres of 35%, 55% and 75%, take the glass hollow microspheres with a mesh particle size of 150-400 mesh and 500-1000 mesh, respectively, with a mesh particle size of 800-1000 mesh Purpose 1100 aluminum powder, 5A03 aluminum powder and 5A06 aluminum powder are mixed.

[0065] The specific ingredients are: control the volume fraction of hollow microspheres to be 35% and mix with 5A06 aluminum powder, control the volume fraction of hollow microspheres to be 55% and mix with 5A03 aluminum powder, control the volume fraction of hollow microspheres to be 75% and mix with 1100 aluminum powder, wherein , the volume fraction of hollow microspheres is 35% of the composite material, the volume fraction ratio of 150-400 mesh and 500-1000 mesh is 2:1; the volume fraction of hollo...

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Abstract

The invention discloses an aluminum-based porous composite material as well as a preparation method and application thereof, and relates to the technical field of gradient composite materials. The preparation method comprises the following steps that a plurality of groups of composite raw materials are laid in a mold layer by layer, and cold pressing forming is carried out to obtain a prefabricated blank; hot pressed sintering is carried out on the prefabricated blank; and each group of composite raw materials comprises aluminum alloy powder and hollow microspheres, at least one parameter index of two adjacent layers of composite raw materials is different, and the parameter indexes comprise the volume fraction of the hollow microspheres, the grain size distribution of the aluminum alloy powder, the grain size distribution of the hollow microspheres, the components of aluminum alloy powder and the components of the hollow microspheres. The preparation method of the composite material is extremely high in designability, and the prepared composite material can form a functional gradient, so that excellent buffering and energy absorbing performance is obtained.

Description

technical field [0001] The invention relates to the technical field of gradient composite materials, in particular to an aluminum-based porous composite material, its preparation method and application. Background technique [0002] Aluminum-based porous composite material is a kind of buffer energy-absorbing material, which uses hollow microspheres as "holes", aluminum alloy as the matrix, microspheres with controllable pore size, and thin shells with supporting functions, high specific strength / rigidity, and strong It can be designed, and can be applied to the fields of anti-explosion protection for personnel and important equipment such as aerospace buffer parts, armor structural units, anti-collision automobile panels, explosion-proof partition walls, and anti-explosion tanks. [0003] However, the energy absorption capacity of the existing aluminum-based porous composite materials is not ideal, especially when subjected to impact loads, each micro-domain component tends...

Claims

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Application Information

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IPC IPC(8): C22C1/08B22F3/14B22F3/02B22F3/11B22F3/24
CPCB22F3/02B22F3/11B22F3/14B22F3/24B22F2003/248C22C1/08
Inventor 林颖菲冯晓伟冯波路建宁陈恒田卓罗铁钢
Owner GUANGDONG INST OF NEW MATERIALS
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