Preparation method of hierarchically-structured composite material with nano-ceramic particle reinforced metal matrix

A technology of nano-ceramic particles and composite materials is applied in the field of preparation of nano-ceramic particles reinforced metal matrix graded configuration composite materials, which can solve the problems of low efficiency, high cost, poor plasticity and toughness, etc. Good density effect

Active Publication Date: 2019-06-07
CHONGQING LUOMAN NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of poor ductility, low efficiency and high cost of existing traditional ceramic-reinforced metal composite materials, the present invention provides a method for preparing nano-ceramic particle-reinforced metal-matrix hierarchical configuration composite materials. The specific steps are as follows:

Method used

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  • Preparation method of hierarchically-structured composite material with nano-ceramic particle reinforced metal matrix

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Effect test

Embodiment 1

[0024] A method for preparing a nano-ceramic particle-reinforced metal matrix hierarchical configuration composite material, the specific steps are as follows:

[0025] (1) First select SiC ceramic powder with a size of 50nm and 7075 aluminum alloy powder with a size of 30μm, wherein the mass ratio of SiC ceramic powder and 7075 aluminum alloy powder is 1:2, add 1.5% stearic acid in total, and the ball-to-material ratio is 10 : 1, the rotating speed is 1000 rpm, and finally the high-energy ball mill mixes the powder evenly.

[0026] (2) Then, the 7075 aluminum alloy was melted to prepare molten metal, the melting temperature was 750°C, and then kept at 660°C for 30 minutes, and the molten metal was stirred.

[0027] (3) Add the uniformly mixed SiC ceramic powder and 7075 aluminum alloy metal powder in step (1) into the molten metal in step (2), so that the mass ratio of the final SiC ceramic powder to 7075 aluminum alloy metal is 1:19, And stir to disperse the ceramic powder ...

Embodiment 2

[0031] A preparation method of the nano-ceramic particle reinforced metal matrix hierarchical configuration composite material, the specific steps are as follows:

[0032] (1) First select Al with a size of 100nm 2 o 3 Ceramic powder and 5μm cast aluminum alloy (ZAlSi7Mg) powder, where Al 2 o 3 The mass ratio of ceramic powder and cast aluminum alloy (ZAlSi7Mg) powder is 1:4, a total of 1% stearic acid is added, the rotation speed is 500 rpm, the ball-to-material ratio is 10:1, and finally the powder is mixed evenly by high-energy ball milling.

[0033] (2) Then melt the cast aluminum alloy (ZAlSi7Mg) to prepare molten metal at a melting temperature of 720°C, then keep it at 650°C for 50min, and stir the molten metal.

[0034] (3) Mix the Al powder evenly in step (1) 2 o 3 Ceramic powder and cast aluminum alloy (ZAlSi7Mg) metal powder are added to the molten metal in step (2), so that the final Al 2 o 3 The mass ratio of ceramic powder to cast aluminum alloy (ZAlSi7Mg) ...

Embodiment 3

[0038] A preparation method of the nano-ceramic particle reinforced metal matrix hierarchical configuration composite material, the specific steps are as follows:

[0039] (1) First select TiO with a size of 50nm 2 Ceramic powder and 1μm cast copper alloy (ZCuZn38Mn2Pb2) powder, in which TiO 2 The mass ratio of ceramic powder and cast copper alloy (ZCuZn38Mn2Pb2) powder is 1:4, a total of 1% stearic acid is added, the ball-material ratio is 20:1, the speed is 700 rpm, and finally the powder is mixed evenly by high-energy ball milling.

[0040] (2) Then melt the cast copper alloy (ZCuZn38Mn2Pb2) to prepare molten metal, the melting temperature is 990°C, and then keep it at 890°C for 20min, and stir the molten metal.

[0041] (3) Mix the TiO powder uniformly in step (1) 2 Ceramic powder and cast copper alloy (ZCuZn38Mn2Pb2) metal powder are added to the molten metal in step (2), so that the final TiO 2 The mass ratio of ceramic powder to cast copper alloy (ZCuZn38Mn2Pb2) is 1...

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Abstract

The invention relates to a preparation method of a hierarchically-structured composite material with nano-ceramic particle reinforced metal matrix and belongs to the technical field of metal matrix composite materials. The method comprises the following steps: carrying out high-energy ball mill mixing of nanoscale ceramic particles with metal powder; then melting to obtain molten metal, keeping the temperature at 30-80 DEG C below a liquid phase line and forming part of spherical grains in the molten metal; adding ceramic-metal mixed powder into the molten metal, stirring and enabling nano-ceramic powder to be uniformly dispersed in the molten metal among the spherical grains; preparing cast ingots; processing the cast ingots by rolling, extruding and drawing, enabling the spherical grainsin the cast ingots to be changed into lamellar or fibrous grains so as to obtain the hierarchically-structured composite material composed of the nano-ceramic particle reinforced metal matrix and thelamellar or fibrous grains. The method is capable of preparing a metal matrix composite material with excellent strength, plasticity and comprehensive performance.

Description

technical field [0001] The invention relates to a method for preparing a nano-ceramic particle-reinforced metal-matrix hierarchical configuration composite material, which belongs to the technical field of metal-matrix composite materials. Background technique [0002] The demand for ultra-high-strength and high-toughness materials in the fields of aerospace, ships, ordnance, and transportation is becoming more and more urgent. However, the high specific strength of traditional alloy materials has reached the limit, which cannot further meet the performance requirements and use requirements of materials required for current advanced equipment. Particle reinforced metal matrix composites are one of the most promising advanced materials in the 21st century. The composite material has high specific strength, high specific stiffness, high specific modulus, and good high-temperature performance, and the particle-reinforced metal-based composite material has wear resistance, fati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C32/00C22C33/04C21D7/10C22F1/04C22F1/06C22F1/08C22F1/18C22C21/00C22C23/00C22C14/00C22C9/00
Inventor 卢德宏徐志凯
Owner CHONGQING LUOMAN NEW MATERIAL TECH CO LTD
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