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Preparation method for alumina-based foam material

A technology of aluminum-based foam materials and aluminum alloys, applied in the field of metal-based composite materials, can solve problems such as process and parameter specification, and achieve the effects of improving performance, energy absorption and damping performance.

Active Publication Date: 2010-08-11
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the dispersion of inorganic fibers in the metal melt, it is proposed to coat the fiber surface with methods such as flame spraying, vacuum sputtering, hot-dip plating, and chemical plating, but no explanation is given for the specific process and parameters

Method used

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  • Preparation method for alumina-based foam material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The steps of the preparation method of the aluminum-based foam material are as follows.

[0043] (1) Surface treatment of carbon fiber

[0044] The surface treatment method of carbon fiber adopts electroplating method.

[0045] After the surface of the carbon fiber precursor is pretreated, a layer of metal is plated on the surface of the carbon fiber by electroplating, and then the carbon fiber filament is cut into short carbon fibers of the required length for use.

[0046] The method of carbon fiber surface pretreatment is to heat the carbon fiber precursor in an air atmosphere at 400°C for 30 minutes, then immerse it in nitric acid with a mass concentration of 30% and boil it for 20 minutes, then rinse it with deionized water until it is neutral, and then put it into electroplating. Electrodeposition in liquid.

[0047] In the process of carbon fiber surface treatment, the electroplating method is used to plate metal copper on the surface of carbon fiber.

[0048]...

Embodiment 2

[0056] The steps of the preparation method of the aluminum-based foam material are as follows.

[0057] (1) Surface treatment of carbon fiber

[0058] The surface treatment method of carbon fiber adopts electroplating method.

[0059] After the surface of the carbon fiber precursor is pretreated, a layer of metal is plated on the surface of the carbon fiber by electroplating, and then the carbon fiber filament is cut into short carbon fibers of the required length for use.

[0060] The method of carbon fiber surface pretreatment is to heat the carbon fiber precursor in an air atmosphere at 450°C for 20 minutes, then immerse it in nitric acid with a mass concentration of 40% and boil it for 10 minutes, then rinse it with deionized water until it is neutral, and then put it into electroplating. Electrodeposition in liquid.

[0061] In the process of carbon fiber surface treatment, the electroplating method is used to plate metal nickel on the surface of carbon fiber.

[0062]...

Embodiment 3

[0070] The steps of the preparation method of the aluminum-based foam material are as follows.

[0071] (1) Surface treatment of carbon fiber

[0072] The surface treatment method of carbon fiber adopts electroless plating method.

[0073] The method of carbon fiber surface pretreatment is: heat the carbon fiber precursor in an air atmosphere at 450°C for 10 minutes, then immerse in nitric acid with a mass concentration of 20% and boil for 20 minutes, then rinse with deionized water until neutral; then carbon fiber Put in a concentration of 10g / l SnCl 2 Carry out sensitization treatment in aqueous solution, soak for 10 minutes, take out and wash; immerse the sensitized carbon fiber in AgNO 3 and NH 3 ·H 2 Mixed aqueous solution of O (AgNO 3 5g / l, NH 3 ·H 2 (0 8ml / l) to carry out activation treatment, soak for 5 minutes, take out and clean; put the carbon fiber after activation into mass concentration 1% HCHO aqueous solution and soak for 60 seconds, after taking it out,...

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Abstract

The invention discloses a preparation method for an alumina-based foam material. The method comprises the following steps: firstly, plating a layer of metal on the surface of carbon fiber, and adding the carbon fiber with the metal coating into aluminum or aluminum alloy fusant; then adding titanium hydride, and stirring evenly; and taking the carbon fiber out after foaming, and cooling to obtain the alumina-based foam material with enhanced fiber. In the invention, the carbon fiber is introduced into the preparation of the foamed aluminum material, thereby realizing that the stability of bubbles and material performance are improved; and compared with the prior art, the compressive strength of the foamed aluminum material prepared by the invention is higher than 6Mpa, the impact toughness is improved by about 30%, and the energy absorption capability is improved by more than 50%, thus the compression strength, the energy absorbing and damping performances of the alumina-based foam material with short enhanced carbon fiber are remarkably improved, and the pore wall toughness of the material is better.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite materials, and in particular relates to a preparation method of aluminum-based foam materials. Background technique [0002] Aluminum foam material is a multi-functional new structural material, which has the characteristics of small relative density, large specific surface area, high specific mechanical properties, and good damping and shock absorption performance. It can be widely used in aerospace, military industry, ships, rail trains, and automobiles. And construction, machinery and many other fields. Carbon fiber reinforced aluminum matrix composites are a kind of composite materials that have been studied for a long time because of their low density, high specific strength, high specific stiffness, good electrical and thermal conductivity, high temperature strength and good dimensional stability at high temperature. If the carbon fiber reinforced aluminum-based composite mate...

Claims

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Application Information

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IPC IPC(8): C22C47/08C22C47/04C22C49/06C22C49/14C22C101/10C22C121/02
Inventor 姚广春罗洪杰曹卓坤刘宜汉张晓明吴林丽
Owner NORTHEASTERN UNIV
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