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Preparation method of nano-ceramic particle reinforced aluminum foam matrix composite material

A technology of nano-ceramic particles and aluminum-based composite materials, applied in the field of preparation of foamed aluminum-based composite materials, to achieve high compression yield strength, overcome easy agglomeration, and improve mechanical properties

Inactive Publication Date: 2012-02-29
HARBIN INST OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that in the preparation method of the existing ceramic particle reinforced aluminum foam matrix composite material, the ceramic particles are micron-scale, and the uniform distribution of nano-ceramic particles cannot be realized. It leads to the problems of large pore size and low compressive yield strength of the existing ceramic particle reinforced aluminum foam matrix composite material, thereby providing a preparation method of nano ceramic particle reinforced aluminum foam matrix composite material

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  • Preparation method of nano-ceramic particle reinforced aluminum foam matrix composite material

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specific Embodiment approach 1

[0018] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the nano-ceramic particles in the raw material powder are silicon carbide (SiC), silicon oxide (SiO 2 ), alumina (Al 2 o 3 ), titanium diboride (TiB 2 ), silicon nitride (Si 3 N 4 ) or titanium carbide (TiC). Other parameters are the same as in the first embodiment.

[0019] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the particle size of the nano-ceramic particles is 20-80 nm. Other parameters are the same as those in Embodiment 1 or Embodiment 2.

specific Embodiment approach 2

[0020] Embodiment 4: This embodiment is different from Embodiment 1, 2 or 3 in that the aluminum alloy powder in the raw material powder is Al-Cu alloy (2xxx) powder, Al-Mg-Si alloy (6xxx) powder or Al-Si alloy (4xxx) powder. Other parameters are the same as those in Embodiment 1, 2 or 3.

specific Embodiment approach 3

[0021] Embodiment 5: This embodiment differs from Embodiment 4 in that the Al-Cu alloy powder is 2024 or 2014 aluminum alloy powder, and the Al-Mg-Si alloy is 6013, 6061, 6091 or 6063 aluminum alloy powder. Or the Al-Si alloy powder is 4032, 4043 or 4343 aluminum alloy powder. Other parameters are the same as in Embodiment 4.

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Abstract

A nano-ceramic particle reinforced aluminum foam matrix composite material and a preparation method thereof relates to an aluminum foam matrix composite material and a preparation method thereof. The invention solves the problem that in the preparation method of the ceramic particle reinforced aluminum foam matrix composite material, ceramic particles are micron-sized, the uniform distribution ofnano-ceramic particles can not be realized, and the existing ceramic particle reinforced aluminum foam matrix composite material has wide aperture and low compressive yield strength. The aluminum foam matrix composite material of the invention is prepared from aluminum or aluminum alloy powder, CaCO3 and nano-ceramic particles. The preparation method comprises the following steps: using a ball mill to process raw material powder and stearic acid, mixing powder, then placing the mixture in a graphite mould to perform vacuum hot press sintering and obtain a perform, performing forward extrudingto obtain a semi-finished product, heating and foaming to obtain the finished product. The aperture of the aluminum foam matrix composite material is less than 1mm, and the compressive yield strengthis 50-98MPa which is 2-20 times of that of the existing aluminum foam matrix composite material. By using the method of the invention, the nano-ceramic particles can be uniformly distributed in the aluminum foam matrix composite material.

Description

technical field [0001] The invention relates to a preparation method of a foamed aluminum-based composite material. Background technique [0002] Ceramic particles (such as SiC, SiO 2 , TiB 2 , Al 2 o 3 , Si 3 N 4 and TiC) reinforced foamed aluminum-based composite material is a new type of foamed metal material developed in recent years. ), the mechanical properties of the material (such as tensile strength, yield strength and stiffness) are improved due to the addition of high-strength, high-hardness ceramic particles as reinforcements for aluminum foam. [0003] At present, the reinforcements added to foamed aluminum are all micron-sized ceramic particles, which belong to large-pore foamed aluminum materials. Although the mechanical properties have been improved, they still cannot fully meet the performance requirements of structural materials. At present, the ceramic particles used in the conventional melt foaming method can only be of micron size, and the obtain...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/08
Inventor 李爱滨耿林任伟曹国剑李峰杜小米
Owner HARBIN INST OF TECH