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Foamed aluminum and ceramic composite material and preparation method thereof

A ceramic composite material and composite material technology are applied in the fields of foamed aluminum and ceramic composite materials and their preparation to achieve the effects of large-scale production, consistent performance and short preparation period

Inactive Publication Date: 2018-03-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there have been no reports on the successful application of liquid phase ion electrodeposition technology to prepare foamed metal composites.

Method used

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  • Foamed aluminum and ceramic composite material and preparation method thereof
  • Foamed aluminum and ceramic composite material and preparation method thereof
  • Foamed aluminum and ceramic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation process of aluminum foam and ceramic composite material is as follows:

[0035] (1) Process aluminum foam with a through-hole porosity of 50% and an average pore diameter of 1.0 mm into a sample of 20 mm × 10 mm × 5 mm, and ultrasonically clean the aluminum foam sample in acetone and alcohol for 8 minutes;

[0036] (2) The voltage is controlled by high-frequency switching DC power supply, and the mode is set to constant voltage mode. Prepare the 500g / L aluminum nitrate solution and pour it into a beaker with graphite strips on the cup wall, connect the two graphite strips with wires and connect them to the positive pole of the power supply, fix the aluminum foam sample with wires and wrap the wires with raw material tape The connection with the aluminum foam sample is connected to the negative pole of the power supply; after the whole device is connected, turn on the DC power supply, adjust the voltage to 130V, and keep this voltage for 180s for de...

Embodiment 2

[0040] A kind of preparation process of aluminum foam and ceramic composite material composite material is as follows:

[0041](1) Process aluminum foam with a through-hole porosity of 60% and an average pore diameter of 1.6 mm into a sample of 20 mm × 10 mm × 5 mm, and ultrasonically clean the aluminum foam sample in acetone and alcohol for 8 minutes;

[0042] (2) The voltage is controlled by high-frequency switching DC power supply, and the mode is set to constant voltage mode. Prepare the 450g / L aluminum nitrate solution and pour it into the beaker with graphite strips on the cup wall, connect the two graphite strips with wires and connect them to the positive pole of the power supply, fix the aluminum foam sample with wires and wrap it with raw material tape Hold the connection between the wire and the sample and connect it to the negative pole of the power supply; after the whole device is connected, turn on the DC power supply, adjust the voltage to 150V, and keep this v...

Embodiment 3

[0046] A kind of preparation process of aluminum foam and ceramic composite material composite material is as follows:

[0047] (1) Process aluminum foam with a through-hole porosity of 80% and an average pore diameter of 2.0mm into a sample of 20mm×10mm×5mm, and clean the foamed aluminum sample ultrasonically in acetone and alcohol for 15 minutes.

[0048] (2) The voltage is controlled by high-frequency switching DC power supply, and the mode is set to constant voltage mode. Prepare 300g / L aluminum nitrate solution and pour it into a beaker with graphite strips on the cup wall, connect the two graphite strips with wires and connect them to the positive pole of the power supply, fix the aluminum foam sample with wires and wrap it with raw material tape Hold the connection between the wire and the sample and connect it to the negative pole of the power supply; after the whole device is connected, turn on the DC power supply, adjust the voltage to 170V, and keep this voltage for...

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Abstract

The invention relates to a foamed aluminum and ceramic composite material and a preparation method thereof, and belongs to the field of foam metal materials. The composite material uses foamed aluminum as a substrate, the surface deposit is Al2O3, the components of the foamed aluminum comprise aluminum and silicon, and 100 mass% of the composite material comprises 50-65 mass% of elemental Al, 25-35 mass% of elemental oxygen, 7-15 mass% of elemental silicon and 0-5 mass% of elemental carbon. The preparation method is characterized in that an aluminum nitrate solution is used as an electrolyte,an inert electrode used as an anode is connected with the positive electrode of a direct current power supply, the foamed aluminum used as a cathode is connected with the negative electrode of the direct current power supply, the connection position of a lead wire and the foamed aluminum is wrapped with an insulating material, and deposition is performed to obtain the foamed aluminum and ceramic composite material. The method has the advantages of simplicity in operation, short preparation cycle, high efficiency, and realization of large-scale production; and the prepared composite material enhances the comprehensive mechanical properties of the foam metal while maintaining the properties of the original foam metal.

Description

Technical field: [0001] The invention relates to a foamed aluminum and ceramic composite material and a preparation method thereof. Specifically, a foamed aluminum and ceramic composite material with low density, high strength and high compressibility is prepared by a liquid phase ion electrodeposition method, which belongs to foamed metal materials field. Background technique: [0002] In the early 1990s, metal foam materials were made by adding additives to metal or metal alloys and then undergoing a foaming process. In fact, they were composite materials of metal or metal alloys and gases. It has both the characteristics of metal and the characteristics of bubbles. Metal foam materials generally have the following characteristics: ①Compared with powder metallurgy porous materials, porous metal foam materials have larger pore diameters and more through holes. The pore diameter of the foam metal material is generally between 0.1 and 10mm; ②The porosity is high, and the por...

Claims

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Application Information

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IPC IPC(8): C25D11/06
CPCC25D11/026C25D11/06
Inventor 程焕武陈为为牛特陈世杰张玉平陈梦灵
Owner BEIJING INSTITUTE OF TECHNOLOGYGY