Boron carbide reinforced foamed aluminum composite material and preparation method thereof

An aluminum composite material and reinforced foam technology, applied in the field of materials, can solve the problems of process equipment sealing, high pressure requirements, complex process, high production cost, etc., and achieve excellent vibration and noise reduction and energy absorption, High wear resistance and strong neutron radiation resistance

Pending Publication Date: 2022-06-28
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the preparation techniques of traditional metal foam composites mainly include powder metallurgy, solution infiltration, pressure infiltration, etc. These preparation methods have high requirements on the sealing of process equipment and the pressure that can be applied, and the process is relatively complicated. higher cost

Method used

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  • Boron carbide reinforced foamed aluminum composite material and preparation method thereof
  • Boron carbide reinforced foamed aluminum composite material and preparation method thereof

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preparation example Construction

[0033] A preparation method of boron carbide reinforced aluminum foam composite material, comprising the following steps:

[0034] Step 1. Take B 4 The C powder, the 6061 aluminum alloy powder and the Ti powder are mechanically stirred and mixed uniformly to obtain a mixed powder.

[0035] Step 2: Weigh isocyanate, polyether polyol and dimethyl silicone oil, mix the above solvent with the mixed powder in step 1 and then mechanically stir to obtain a mixed slurry.

[0036] Step 3. Add the catalyst to the mixed slurry in Step 2. When the viscosity of the system increases and before the phenomenon of "climbing the pole" occurs, add deionized water, stir quickly, stop stirring, and let it stand at room temperature to complete the foaming, and let it stand for 24 minutes. hours, the preform preparation is complete.

[0037] Step 4. Put the preform into a debinding furnace for debinding and sintering to obtain a boron carbide reinforced aluminum foam composite material.

[0038] ...

Embodiment 1

[0054] A preparation method of a ceramic particle reinforced foamed aluminum composite material, the steps are as follows:

[0055] 1. Take the average particle size as 5μmB 4 12.2 g of C powder, 46.85 g of 6061 aluminum alloy powder with an average particle size of 38 μm, and 1.75 g of Ti powder with an average particle size of 5 μm were mixed uniformly by mechanical stirring to obtain a mixed powder.

[0056] 2. Weigh 17.1g of isocyanate PM200, 15.6g of polyether polyol R2305 and 0.09g of dimethicone, mix the above solvent with the mixed powder and mechanically stir for 300r / min×5min to obtain a mixed slurry.

[0057] 3. To the mixed slurry, add dibutyltin dilaurate T-12 and triethylenediamine A33 in a total of 0.09g, wherein T-12 is 0.0675g and A33 is 0.0225g. When the viscosity of the system increases, and before the phenomenon of "climbing the rod" occurs, add deionized water, stir rapidly at 700r / min×10s, stop stirring, and let it stand at room temperature to complete t...

Embodiment 2

[0061] A preparation method of a ceramic particle reinforced foamed aluminum composite material, the steps are as follows:

[0062] 1. Take the average particle size as 5μmB 4 8.6 g of C powder, 47.52 g of 6061 aluminum alloy powder with an average particle size of 38 μm, and 1.08 g of Ti powder with an average particle size of 5 μm were mixed uniformly by mechanical stirring to obtain a mixed powder.

[0063] 2. Weigh 16.1g of isocyanate PM200, 14.7g of polyether polyol R2305 and 0.087g of dimethicone, mix the above solvent with the mixed powder and mechanically stir for 300r / min×5min to obtain a mixed slurry.

[0064] 3. Add dibutyltin dilaurate T-12 and triethylenediamine A33 to the mixed slurry in a total of 0.087g, wherein T-12 is 0.06525g and A33 is 0.02175g. When the viscosity of the system increases, and before the phenomenon of "climbing the rod" occurs, add deionized water, stir rapidly at 700r / min×10s, stop stirring, and let it stand at room temperature to complete...

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Abstract

The invention belongs to the technical field of materials, and relates to a boron carbide reinforced foamed aluminum composite material and a preparation method thereof. The composite material specifically comprises an aluminum alloy matrix, boron carbide reinforced particles and an open-cell foam structure. Wherein the aluminum alloy powder accounts for 77.1-88.9% of the solid phase mass of the composite material, the B4C powder accounts for 10-20% of the solid phase mass of the composite material, and the Ti powder accounts for 1.1-2.9% of the solid phase mass of the composite material; b4C and molten aluminum alloy are subjected to an in-situ synthesis reaction to generate Al3BC and AlB2 phases, meanwhile, polyurethane is decomposed to release gas, and a communicated open pore structure is generated in the composite material. The composite material integrates the advantages of an in-situ reinforced phase and a network interpenetrating open pore structure of the aluminum and the B4C ceramic particles, has the characteristics of low density, energy absorption and vibration reduction and the like, and meanwhile, the added boron carbide particles and the in-situ reinforced phase enable the composite material to have higher hardness and strength, so that the composite material plays a greater application potential in the field of energy absorption and vibration reduction.

Description

technical field [0001] The invention belongs to the technical field of materials, and particularly relates to a boron carbide reinforced foamed aluminum composite material and a preparation method thereof. Background technique [0002] With the development of society and the continuous development of science and technology, people's requirements for life, study and work are constantly increasing; at the same time, accompanied by major problems such as shortage of resources, noise pollution, energy waste, etc., the research and development and use of new energy and new materials have become imminent. . Aluminum foam has many advantages, such as light weight, large specific surface area, sound absorption and noise reduction, damping, heat insulation and flame retardant, corrosion resistance, good thermal conductivity and electrical conductivity, electromagnetic shielding, etc., but its low mechanical strength limits its wide application. application. Researchers have tried t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11B22F1/10C22C21/00C22C32/00C22C1/08
CPCB22F3/1125B22F3/1039C22C21/00C22C32/0047
Inventor 姚彦桃陈世龙张凯祺王萌孙麟
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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