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Preparation method of aluminium-based porous composite material with micro confined hole

A technology of aluminum-based porous and composite materials, which is applied in the field of preparation of aluminum-based porous composite materials, and can solve problems such as external pressure, high cost, and complicated preparation methods

Active Publication Date: 2007-08-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of the existing closed-cell aluminum-based porous composite material preparation method, the need to apply external pressure, the need to add penetration aids, and the preparation method are complex and costly during the preparation process of the composite material.

Method used

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  • Preparation method of aluminium-based porous composite material with micro confined hole

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specific Embodiment approach 1

[0005] Specific Embodiment 1: In this embodiment, a method for preparing an aluminum-based porous composite material containing tiny closed pores is realized through the following steps: (1) Filling of hollow body particles: 8-12 g of particles with an average diameter of 0.05-2 mm and an inner cavity Fly ash floats or hollow glass beads with a diameter of 0.01 to 1.5 mm are put into the mold cavity and compacted; (2) Place aluminum alloy: place 20 to 30 g of aluminum alloy on top of the hollow body particles in the mold cavity (3) Heating: Put the mold with aluminum alloy and hollow body particles into a high-temperature furnace and feed nitrogen with a purity of 99.99%, then heat the high-temperature furnace to 800-1200°C; (4) Heat preservation: at 800 ~1200°C and keep the temperature for 1~6h; (5) Demoulding: the mold is cooled to room temperature with the holding furnace, then demoulded and the ingot is taken out to obtain an aluminum-based porous composite material contain...

specific Embodiment approach 2

[0007] Specific embodiment two: The difference between this embodiment and specific embodiment one is that in step (1), 9 to 11 g of fly ash floats or hollows with an average diameter of 0.1 to 1.2 mm and an inner cavity diameter of 0.05 to 1 mm are used. Glass beads are loaded into the mold cavity and compacted. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0008] Specific embodiment three: The difference between this embodiment and specific embodiment one is that in step (1), 10 g of fly ash floats or hollow glass beads with an average diameter of 1 mm and an inner cavity diameter of 0.8 mm are packed into the mold Cavity and compacted. Other steps are the same as in the first embodiment.

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Abstract

The invention discloses a making method of aluminium-based porous composite material with micro-closing hole, which comprises the following steps: (1) filling through hollow particle; (2) placing aluminium alloy; (3) heating; (4) insulating; (5) stripping mould; obtaining the product.

Description

technical field [0001] The invention relates to a preparation method of an aluminum-based porous composite material. Background technique [0002] Porous metal is a new type of composite material composed of metal matrix and pores. Its unique porous structure makes it have many excellent properties. Performance, damping and shock absorption, noise reduction, electromagnetic shielding, heat insulation, heat exchange, etc. show their own characteristics, and have the characteristics of both structural materials and functional materials. Porous metals can be divided into two types from the structure: through-pore and closed-pore. The closed-cell structure can be prepared by the hollow filling method or by the liquid foaming method. The liquid foaming method is a commonly used method for the preparation of closed-cell porous metals. And blowing agent decomposition to generate gas two methods. For the main preparation methods of closed-cell aluminum-based porous composites, suc...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/08B22F3/16C22C45/08
Inventor 武高辉张强乔菁
Owner HARBIN INST OF TECH
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