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Aluminum-based micro/nano-meter porous amorphous alloy material and preparation method thereof

An amorphous alloy and nanoporous technology, applied in the field of aluminum-based micro/nano-porous amorphous alloy materials and their preparation, can solve the problems of poor corrosion resistance, poor compressive plastic deformation of Al-based amorphous alloys, blank materials, etc.

Inactive Publication Date: 2010-06-30
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a kind of aluminum base micro / nano porous amorphous material and preparation method thereof, one of which is to solve the problem of poor compressive plastic deformation of Al base amorphous alloy; Poor corrosion resistance and other issues; the third is to solve the blank problem of Al-based micro / nano porous amorphous alloy materials; the fourth is to solve the problem of reducing the pore size of porous materials to nanometer size

Method used

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  • Aluminum-based micro/nano-meter porous amorphous alloy material and preparation method thereof
  • Aluminum-based micro/nano-meter porous amorphous alloy material and preparation method thereof
  • Aluminum-based micro/nano-meter porous amorphous alloy material and preparation method thereof

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Embodiment 1

[0051] Using commercially available pure metal Al, Bi, Ni, Co, Y blocks, plates, ingots and other bulk materials (purity higher than 99.9wt%) as starting materials, arc melting in an argon atmosphere passivated by titanium Master alloy ingot, the alloy composition (atomic percentage, the same below) is Al 82.87 Bi 2.5 Ni 4.88 co 1.95 Y 7.8 , The master alloy ingot needs to be arc-melted several times to ensure the uniformity of the composition. Take an appropriate amount of master alloy material and place it in a quartz crucible with a nozzle. After re-melting by induction heating under an argon atmosphere, the alloy melt is quenched by a single roll (cooling rate is 10 4 ~10 6 K / s) prepared as thin strips. The inner diameter of the quartz crucible is 14mm, the cross-sectional size of the square nozzle is 0.7×5mm, the distance between the nozzle and the surface of the single roller is 0.5mm, and the linear speed of the single roller is 30m / s. The width of the thin strip...

Embodiment 2

[0055] Using commercially available pure metals such as blocks, plates, and ingots (purity higher than 99.9wt%) of Al, Pb, Ni, Co, and Y elements as starting materials, arc melting in an argon atmosphere passivated by titanium Master alloy ingot, the alloy composition (atomic percentage, the same below) is Al 82.87 Pb 2.5 Ni 4.88 co 1.95 Y 7.8 . The master alloy ingot needs to be arc-melted several times to ensure the uniformity of the composition. Take an appropriate amount of master alloy material and place it in a quartz crucible with a nozzle. After re-melting by induction heating under an argon atmosphere, the alloy melt is quenched by a single roll (cooling rate is 10 4 ~10 6 K / s) prepared as thin strips. The inner diameter of the quartz crucible is 14mm, the cross-sectional size of the square nozzle is 0.7×5mm, the distance between the nozzle and the surface of the single roller is 0.5mm, and the linear speed of the single roller is 30m / s. The width of the thin ...

Embodiment 3

[0059] Using commercially available pure metal Al, Bi, Pb, Ni, Co, Y blocks, plates, ingots and other bulk materials (purity higher than 99.9wt%) as starting materials, in an argon atmosphere passivated by titanium Arc melting into a master alloy ingot, the alloy composition (atomic percentage, the same below) is Al 82.87 Bi 1.0 Pb 1.5 Ni 4.88 co 1.95 Y 7.8 . The master alloy ingot needs to be arc-melted several times to ensure the uniformity of the composition. Take an appropriate amount of master alloy material and place it in a quartz crucible with a nozzle. After re-melting by induction heating under an argon atmosphere, the alloy melt is quenched by a single roll (cooling rate is 10 4 ~10 6 K / s) prepared as thin strips. The inner diameter of the quartz crucible is 14mm, the size and section of the square nozzle is 0.7×5mm, the distance between the nozzle and the surface of the single roller is 0.5mm, and the linear speed of the single roller is 30m / s. The width o...

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Abstract

The invention belongs to the design and preparation technology of porous amorphous alloy materials, in particular to an aluminum-based micro / nano-meter porous amorphous alloy material and a preparation method thereof. The invention mainly solves the problems of low compressed plastic deformation of an aluminum-based amorphous alloy material, low strength and low corrosion resistance of foam metalaluminum, scarcity of aluminum-based micro / nano-meter porous amorphous alloy materials, nanometer aperture of porous materials, and the like. The preparation method comprises: firstly, quickly solidifying aluminum-based alloy melt under a condition of quick cooling to obtain an aluminum-based amorphous alloy material composite material containing micro / nano scale crystalline grains; secondly, subjecting the amorphous composite material to electrochemical corrosion or chemical treatment to obtain the aluminum-based micro / nano-meter porous amorphous alloy material. The aperture of the aluminum-based micro / nano-meter porous amorphous alloy material ranges from 1 nano meter to 100 microns, and the porosity of the aluminum-based micro / nano-meter porous amorphous alloy material is 1 to 50 percent. The geometrical form of the aluminum-based micro / nano-meter porous amorphous alloy material is determined by a required material form. And the geometrical form of the aluminum-based micro / nano-meter porous amorphous alloy material can be used as a material for wave absorption, vibration and noise reduction, sound absorption, electromagnetic shielding, catalytic absorption, energy-absorption buffering and the like.

Description

technical field [0001] The invention belongs to the design and preparation technology of porous amorphous alloy materials. Specifically, the Al-based amorphous composite material containing micro / nano spherical crystalline particles is prepared by using the liquid phase separation law through rapid solidification technology, and then chemical treatment or The spherical particles in the composite material are dissolved or corroded by electrochemical corrosion, and an aluminum-based micro / nano porous amorphous alloy material is designed and prepared. Background technique [0002] The porous amorphous alloy material is a metallic glass material in which pores are diffusely distributed in the amorphous alloy. Porous amorphous alloy materials not only have the characteristics of porous crystalline metal materials, but also have some excellent properties of amorphous alloy materials. For example, porous crystalline metal materials have the characteristics of light weight, sound a...

Claims

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Application Information

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IPC IPC(8): C22C45/08C22C1/08
Inventor 何杰赵九洲兴成尧
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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