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High-thermal-conductivity particle reinforcement Al-based composite and preparing method thereof

A particle-reinforced aluminum and composite material technology, which is applied in the field of metal matrix composite materials, can solve the problem of insufficient thermal conductivity and comprehensive mechanical properties, and cannot meet the needs of high thermal conductivity and comprehensive mechanical properties of die-casting aluminum alloy materials. and other problems, achieving obvious thermal conductivity, overcoming the floating of strengthening particles, and solving the problems of hardness and machinability

Active Publication Date: 2020-01-24
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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  • High-thermal-conductivity particle reinforcement Al-based composite and preparing method thereof
  • High-thermal-conductivity particle reinforcement Al-based composite and preparing method thereof
  • High-thermal-conductivity particle reinforcement Al-based composite and preparing method thereof

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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-based composites and particularly relates to a high-thermal-conductivity particle reinforcement Al-based composite and a preparing method thereof.The high-thermal-conductivity particle reinforcement Al-based composite comprises reinforcing particles and aluminum alloy, wherein the reinforcing particles are uniformly distributed in an aluminumalloy base body and form great interface bonding with the base body; and the mass ratio of the aluminum alloy to the reinforcing particles is 100:(1-30). The preparing method has the advantages that the mass ratio of the aluminum alloy to the reinforcing particles is optimized, the quantity of each component in the aluminum alloy is controlled, and the thermal conductivity of the aluminum alloy and the reinforcing particles is controlled; and the obtained Al-based composite has high thermal conductivity and great 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 Applications(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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