Metal foam composite material and preparation method thereof

A composite material and metal foam technology, applied in the direction of metal layered products, chemical instruments and methods, layered products, etc., can solve the problems of poor strength of metal-based composite foam materials and limit the application of metal-based composite foam materials, and achieve Achieve high-value conversion, light weight and simple process

Pending Publication Date: 2021-09-03
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor strength of metal matrix syntactic foams limits the further application of metal matrix syntactic foams

Method used

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  • Metal foam composite material and preparation method thereof
  • Metal foam composite material and preparation method thereof
  • Metal foam composite material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0059] Another aspect of the present invention also provides a kind of preparation method of above-mentioned metal foam composite material, comprising:

[0060] 1) Lay the first layer of metal plate, mixed layer and second layer of metal plate sequentially in the mold from bottom to top and then seal the mold;

[0061] 2) Heat the mold to 400-900°C, pressurize to 5-30MPa, keep it for 45-120min, and cool to obtain metal foam composite material;

[0062] Wherein, the density of the first metal plate and the second metal plate is not less than 90%, and the mixed layer includes metal powder and hollow inorganic material, wherein the hollow inorganic material is selected from fly ash, Al 2 o 3 At least one of hollow ceramic balls or hollow silicon carbide.

[0063] The first layer of metal plate and the second layer of metal plate in the mold in step 1) go through step 2) to generate the metal layer of the metal foam composite material, and the mixed layer generates the inner cor...

Embodiment 1

[0082] The structure of the metal foam composite material in this embodiment can refer to figure 1 , its preparation method comprises the following steps:

[0083] 1) Mix AZ91D magnesium alloy powder and fly ash particles and add 20mL of alcohol to obtain a mixture, wherein the volume of fly ash particles accounts for 60% of the total volume of AZ91D magnesium alloy powder and fly ash particles;

[0084]2) A circular AZ91D magnesium alloy plate with a diameter of 30mm and a thickness of 0.5mm is laid from bottom to top in the mold, and a mixed layer with a thickness of 20mm formed by the above mixture on the magnesium alloy plate has a diameter of 30mm and a thickness of 0.5mm AZ91D magnesium alloy plate, and then seal the mold;

[0085] 3) Place the mold in the hot-press sintering furnace, vacuumize the hot-press sintering furnace and raise the temperature of the hot-press sintering furnace to 300°C at a rate of 10°C / min and keep it warm for 60min, then stop the vacuuming an...

Embodiment 2

[0088] The structure and preparation method of the metal foam composite material in this example are basically the same as in Example 1, the only difference is that the diameter of the AZ91D magnesium alloy plate used in step 2) of the preparation method of this example is 30mm and the thickness is 0.8mm .

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Abstract

The invention provides a metal foam composite material and a preparation method thereof. The metal foam composite material comprises an inner core layer and a metal layer arranged on at least part of the surface of the inner core layer, wherein the density of the metal layer is not lower than 90%, the inner core layer comprises metal and a hollow inorganic material, and the hollow inorganic material is selected from at least one of fly ash, Al2O3 hollow ceramic balls or hollow silicon carbide. According to the invention, the inner core layer of the metal foam composite material comprises the metal and the hollow inorganic material, the pores exist in the inner cavity of the hollow inorganic material, and the density of the metal layer of the metal foam composite material is not lower than 90%, so that the metal foam composite material is small in density, high in strength and excellent in energy absorption and buffering performance; and the preparation method of the metal foam composite material is simple and easy to implement, and the metal foam composite material can be efficiently prepared.

Description

technical field [0001] The invention relates to a metal foam composite material and a preparation method thereof, belonging to the field of composite materials. Background technique [0002] The application of composite materials in weight-sensitive structures can reduce the use of ribs and significantly reduce the weight of products. Therefore, it is more and more widely used in fields such as shipbuilding, armored vehicle industry, and aerospace. [0003] Metal matrix syntactic foams are widely used in sandwich panels and large portable components due to their unique porous properties, lower density than solid metal materials, and ability to cushion and absorb impact energy. However, the poor strength of metal matrix syntactic foams limits the further application of metal matrix syntactic foams. [0004] How to provide a low-density, high-strength composite material and broaden the application range of the composite material is an urgent problem to be solved in this field...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B15/18B32B15/20B22F3/11
CPCB32B9/00B32B9/041B32B15/18B32B15/20B22F3/1125B22F3/1134
Inventor 历长云杨二阔唐玲许磊宋强于化龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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