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A kind of high thermal conductivity particle reinforced aluminum matrix composite material and its preparation method

A particle-reinforced aluminum and composite material technology, applied in the field of metal matrix composite materials, can solve the problem that the comprehensive mechanical properties cannot meet the requirements, the high thermal conductivity and comprehensive mechanical properties of die-casting aluminum alloy materials cannot be met, and the thermal conductivity cannot meet the requirements and other problems, to achieve the effect of overcoming the floating of strengthening particles, solving the problems of hardness and machinability, and obvious thermal conductivity

Active Publication Date: 2021-02-12
ZHUHAI RUNXINGTAI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of electronic communication technology, it is still unable to meet the needs of the next generation of electronic communication products for high thermal conductivity and comprehensive mechanical properties of die-casting aluminum alloy materials.
Existing die-casting aluminum alloy materials either meet the requirements of thermal conductivity, but the comprehensive mechanical properties do not meet the requirements, or the comprehensive mechanical properties meet the requirements, but the thermal conductivity does not meet the requirements

Method used

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  • A kind of high thermal conductivity particle reinforced aluminum matrix composite material and its preparation method
  • A kind of high thermal conductivity particle reinforced aluminum matrix composite material and its preparation method
  • A kind of high thermal conductivity particle reinforced aluminum matrix composite material and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0084] Mass ratio: aluminum alloy: SiC solid particles = 100:10.

[0085] Aluminum alloy: Si 6.0%, Fe 0.5%, the rest Al, thermal conductivity 185W / (m·K).

[0086] Solid particles: SiC particle size 5μm, thermal conductivity 290W / (m·K).

[0087] The preparation method of the high thermal conductivity particle reinforced aluminum matrix composite material specifically includes the following steps:

[0088] 1S batching and smelting: distributing the aluminum alloy raw materials according to the group; heating and smelting the prepared aluminum alloy raw materials to obtain aluminum alloy liquid, wherein the melting temperature is 735°C;

[0089] Preparation of 2S semi-solid slurry: Stir the aluminum alloy liquid obtained in step 1S, and at the same time add the reinforcing particles evenly according to the above-mentioned appropriate mass ratio to prepare a high thermal conductivity particle-reinforced aluminum-based semi-solid slurry at a temperature of 630°C ;

[0090]3S die...

Embodiment 2

[0094] Mass ratio: aluminum alloy: SiC solid particles = 100:10.

[0095] Aluminum alloy: Si 6.5%, Fe 0.6%, Sr 0.02%, the rest Al, thermal conductivity 182W / (m·K).

[0096] Solid particles: SiC particle size 10μm, thermal conductivity 290W / (m·K).

[0097] The preparation method of the high thermal conductivity particle reinforced aluminum matrix composite material specifically includes the following steps:

[0098] 1S batching and smelting: distributing the aluminum alloy raw materials according to the group; heating and smelting the prepared aluminum alloy raw materials to obtain aluminum alloy liquid, wherein the melting temperature is 730°C;

[0099] Preparation of 2S semi-solid slurry: Stir the aluminum alloy solution obtained in step 1S, and at the same time add the reinforcing particles uniformly according to the above-mentioned appropriate mass ratio to prepare a high thermal conductivity particle-reinforced aluminum-based semi-solid slurry at a temperature of 625°C ;...

Embodiment 3

[0104] Mass ratio: aluminum alloy: SiC solid particles = 100:10.

[0105] Aluminum alloy: Si 7.0%, Fe 0.6%, Mg 0.01%, Mn 0.01%, Sr 0.02%, the rest Al, thermal conductivity 182W / (m·K).

[0106] Solid particles: SiC particle size 30μm, thermal conductivity 290W / (m·K).

[0107] The preparation method of the high thermal conductivity particle reinforced aluminum matrix composite material specifically includes the following steps:

[0108] 1S batching and smelting: distributing the aluminum alloy raw materials according to the group; heating and melting the prepared aluminum alloy raw materials to obtain aluminum alloy liquid, wherein the melting temperature is 725°C;

[0109] 2S semi-solid slurry preparation: Stir the aluminum alloy liquid obtained in step 1S, and at the same time add the reinforcing particles evenly according to the above-mentioned appropriate mass ratio, and prepare a high thermal conductivity particle-reinforced aluminum-based semi-solid slurry at a temperatur...

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Abstract

The invention relates to the technical field of metal matrix composite materials, in particular to a high thermal conductivity particle reinforced aluminum matrix composite material and a preparation method thereof. High thermal conductivity particle reinforced aluminum matrix composite material, including reinforced particles and aluminum alloy, the reinforced particles are evenly distributed in the aluminum alloy matrix, and form a good interface bond with the matrix; the quality of the aluminum alloy and the reinforced particles The ratio is 100: (1-30). The invention optimizes the mass ratio of the aluminum alloy to the reinforcing particles, controls the amount of each component in the aluminum alloy, controls the thermal conductivity of the aluminum alloy and the reinforcing particles, and obtains an aluminum-based composite material with high thermal conductivity and good comprehensive mechanical properties.

Description

technical field [0001] The invention relates to the technical field of metal matrix composite materials, in particular to a high thermal conductivity particle reinforced aluminum matrix composite material and a preparation method thereof. Background technique [0002] With the development of electronic communication technology, the product structure is constantly adjusted, the integration level is getting higher and higher, and the power consumption of the product is greatly increased, which brings new challenges to the heat dissipation, volume and weight of electronic communication equipment. Taking 5G wireless base stations as an example, the volume, weight and power consumption are about three times that of 4G products. At the same time, the heat dissipation teeth of the shell are increased in height and density, and light weight is the goal that customers continue to pursue. Particle-reinforced aluminum matrix composites with good die-casting formability and high thermal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C32/00C22C26/00C22C1/10B22D17/00C22F1/043
CPCC22C21/02C22C32/0057C22C32/0063C22C32/0084C22C26/00C22C1/1036B22D17/007C22F1/043C22F1/002C22C2026/006C22C1/12C22C1/1073
Inventor 张莹景佰亨何茂任怀德
Owner ZHUHAI RUNXINGTAI ELECTRICAL
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