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High-strength foam aluminum material and preparation method thereof

A foamed aluminum and high-strength technology, applied in the field of aluminum materials, can solve the problems of low strength, high porosity of foamed aluminum materials, and only 40% porosity, and achieve the effect of high strength and high porosity

Inactive Publication Date: 2019-01-15
INNER MONGOLIA AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the prior art, due to the high porosity of the foamed aluminum material, its strength will be relatively low, resulting in certain restrictions on the use of the foamed aluminum material
For example, patent CN1424416 discloses a high-strength lightweight aluminum foam composite material and its preparation method. The aluminum foam material produced by casting a hollow body in the aluminum material has a tensile strength of about 210Mpa, but a porosity of only 40 %; Another example is that the patent CN106702200B discloses a method for preparing through-hole foamed aluminum. The through-hole foamed aluminum material made of aluminum chips as a raw material and foamed cotton as an absorbent has a pore volume fraction of 89%, but its compression The strength is only 45MPa

Method used

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  • High-strength foam aluminum material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] A high-strength aluminum foam material, with aluminum powder and aluminum alloy powder as the base, is composed of the following raw materials in parts by weight: 50 parts of aluminum powder, 15 parts of aluminum alloy powder, 5 parts of foaming agent, 10 parts of asbestos fiber, 2 parts of potassium hexafluorozirconate, 5 parts of silicon nitride.

[0022] Wherein, the aluminum alloy powder is aluminum-magnesium alloy powder; the foaming agent is fluoride-modified calcium carbonate; the asbestos fiber is one or more of chrysotile, crocidolite and amosite; The silicon nitride is nano-scale silicon nitride with an average particle size of 20nm.

[0023] The preparation method of above-mentioned a kind of high strength aluminum foam material, comprises the following steps:

[0024] (1) batching is carried out according to the weight portion of above-mentioned each component, and add dispersant, carry out mixing evenly with ultrasonic wave;

[0025] (2) Place the mixed r...

Embodiment 2

[0030] A high-strength foamed aluminum material, with aluminum powder and aluminum alloy powder as the base, is composed of the following raw materials in parts by weight: 30 parts of aluminum powder, 30 parts of aluminum alloy powder, 15 parts of foaming agent, 20 parts of asbestos fiber, 8 parts of potassium hexafluorozirconate, 10 parts of silicon nitride.

[0031] Wherein, the aluminum alloy powder is aluminum-magnesium alloy powder; the foaming agent is fluoride-modified calcium carbonate; the asbestos fiber is one or more of chrysotile, crocidolite and amosite; The silicon nitride is nano-scale silicon nitride with an average particle size of 50nm.

[0032] The preparation method of above-mentioned a kind of high strength aluminum foam material, comprises the following steps:

[0033] (1) batching is carried out according to the weight portion of above-mentioned each component, and add dispersant, carry out mixing evenly with ultrasonic wave;

[0034] (2) Place the mix...

Embodiment 3

[0039] A high-strength aluminum foam material, with aluminum powder and aluminum alloy powder as the base, is composed of the following raw materials in parts by weight: 45 parts of aluminum powder, 20 parts of aluminum alloy powder, 8 parts of foaming agent, 13 parts of asbestos fiber, 4 parts of potassium hexafluorozirconate, 6 parts of silicon nitride.

[0040] Wherein, the aluminum alloy powder is aluminum-magnesium alloy powder; the foaming agent is fluoride-modified calcium carbonate; the asbestos fiber is one or more of chrysotile, crocidolite and amosite; The silicon nitride is nano-scale silicon nitride with an average particle size of 30nm.

[0041] The preparation method of above-mentioned a kind of high strength aluminum foam material, comprises the following steps:

[0042] (1) batching is carried out according to the weight portion of above-mentioned each component, and add dispersant, carry out mixing evenly with ultrasonic wave;

[0043] (2) Place the mixed r...

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Abstract

The invention discloses a high-strength foam aluminum material and a preparation method thereof and belongs to the technical field of aluminum materials. The foam aluminum material is prepared with aluminum powder and aluminum alloy powder as a base material and includes, by weight, 30-50 parts of aluminum powder, 15-30 parts of aluminum alloy powder, 5-15 parts of a foamer, 10-20 parts of asbestos fiber, 2-8 parts of potassium hexafluorozirconate, and 5-10 parts of silicon nitride. The aluminum alloy powder is Al / Mg alloy powder. The foamer is CaCO3 modified by a fluoride. The preparation method includes adding a dispersant to the components for dispersion and uniform mixing, and ball-milling, drying and sintering the mixture to obtain the material. By adding the silicon nitride and compounding the CaCO3 modified by a fluoride, the potassium hexafluorozirconate and the like with the base material, the foam aluminum material is high in strength, is high in porosity and small in pore diameter, and is low in density.

Description

technical field [0001] The invention relates to the technical field of aluminum materials, in particular to a high-strength foamed aluminum material and a preparation method thereof. Background technique [0002] Aluminum foam material is a new type of structural material with high porosity, which is made of aluminum or aluminum alloy as the matrix by adding additives and then foaming. Due to the characteristics of small specific gravity, high specific stiffness, high porosity, and good damping and shock absorption, aluminum foam materials can be widely used in aerospace, rail trains, electronics, machinery, construction, and military industries. [0003] However, in the prior art, due to the high porosity of the foamed aluminum material, its strength will be relatively much lower, resulting in certain restrictions on the application range of the foamed aluminum material. For example, patent CN1424416 discloses a high-strength lightweight aluminum foam composite material an...

Claims

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Application Information

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IPC IPC(8): C22C49/06C22C49/12C22C47/14B22F3/11C22C101/06
CPCB22F3/1125C22C47/14C22C49/06C22C49/12
Inventor 刘建宏
Owner INNER MONGOLIA AGRICULTURAL UNIVERSITY