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A preparation method and application of flake graphite reinforced copper matrix composite material

A copper-based composite material and flake graphite technology, applied in the field of its preparation, flake graphite reinforced copper-based composite material, can solve the problem of insufficient density of composite materials, and achieve the purpose of improving the density, improving thermal conductivity, and ensuring uniform distribution. Effect

Active Publication Date: 2020-11-03
QINGDAO BINHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the density of the composite material prepared by the hot pressing sintering method is not enough, and there is still room for further improvement in the thermal conductivity of the composite material.

Method used

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  • A preparation method and application of flake graphite reinforced copper matrix composite material
  • A preparation method and application of flake graphite reinforced copper matrix composite material
  • A preparation method and application of flake graphite reinforced copper matrix composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]Fill the 32-mesh natural flake graphite that has been sensitized and activated into the graphite mold, then use the electromagnetic vibration test bench to vibrate the flake graphite and distribute it in a directional manner, then put the graphite mold into the quartz crucible, and place Cu The -0.3% B alloy block is placed above the graphite mold, and finally the quartz crucible is placed in the graphite crucible in the furnace. Turn on the circulating water system of the equipment, turn on the vacuum system, and exhaust the furnace body until the pressure is less than 0.1Pa. Start the heating system and heat in sections. The specific heating process is: room temperature to 500°C, heating rate 8°C / min, and keep at 500°C for 10 minutes; then heat up from 500°C to 850°C, heating rate 8°C / min, and Keep warm at 850°C for 10 minutes; then raise the temperature of the equipment to 1150°C at a heating rate of 8°C / min; keep warm at 1150°C for 10 minutes. Turn off the vacuum sy...

Embodiment 2

[0043] Fill the 32-mesh natural flake graphite that has been sensitized and activated into the graphite mold, then use the electromagnetic vibration test bench to vibrate the flake graphite and distribute it in a directional manner, then put the graphite mold into the quartz crucible, and place Cu The -0.3% B alloy block is placed above the graphite mold, and finally the quartz crucible is placed in the graphite crucible in the furnace. Turn on the circulating water system of the equipment, turn on the vacuum system, and exhaust the furnace body until the pressure is less than 0.1Pa. Start the heating system and heat in sections. The specific heating process is: room temperature to 500°C, heating rate 8°C / min, and keep at 500°C for 10 minutes; then heat up from 500°C to 850°C, heating rate 8°C / min, and Keep warm at 850°C for 10 minutes; then raise the temperature of the equipment to 1150°C at a heating rate of 8°C / min; keep warm at 1150°C for 30 minutes. Turn off the vacuum s...

Embodiment 3

[0045] Fill the 50-mesh natural flake graphite that has been sensitized and activated into the graphite mold, then use the electromagnetic vibration test bench to vibrate the flake graphite and distribute it in a directional manner, then put the graphite mold into the quartz crucible, and place Cu The -0.3% B alloy block is placed above the graphite mold, and finally the quartz crucible is placed in the graphite crucible in the furnace. Turn on the circulating water system of the equipment, turn on the vacuum system, and exhaust the furnace body until the pressure is less than 0.1Pa. Start the heating system and heat in sections. The specific heating process is: room temperature to 500°C, heating rate 8°C / min, and keep at 500°C for 10 minutes; then heat up from 500°C to 850°C, heating rate 8°C / min, and Keep warm at 850°C for 10 minutes; then raise the temperature of the equipment to 1150°C at a heating rate of 8°C / min; keep warm at 1150°C for 10 minutes. Turn off the vacuum s...

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Abstract

The disclosure belongs to the technical field of graphite-reinforced metal composite materials, and in particular relates to a preparation method and application of flake graphite-reinforced copper-based composite materials. The present disclosure provides a method for preparing flake graphite / copper substrate composite material with excellent performance. Cu‑xB alloy is used as the matrix material of the composite, and natural flake graphite of different sizes is used as the reinforcing phase of the composite. After flake graphite is treated with allergens and activated, it is oriented and arranged by vibration, and the graphite / copper composite material is prepared by air pressure infiltration method. The graphite / copper composite material due to B 4 The in-situ generation of the C interface, the prepared graphite / copper composite material has a small density and has high thermal conductivity along the direction of the flake graphite sheet (parallel to the XOY plane as shown in Figure 1), and the thermal conductivity The highest is 604W / mK, the lowest density is less than 4.40g / cm 3 , which can meet the urgent needs of directional heat dissipation and lightweight structure of high-power devices in the electronic information industry.

Description

technical field [0001] The disclosure belongs to the technical field of graphite-reinforced metal composite materials, and in particular relates to a flake graphite-reinforced copper-based composite material, its preparation method and application. Background technique [0002] The information disclosed in this Background section is only intended to increase the understanding of the general background of the disclosure, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes prior art that is already known to those skilled in the art. [0003] With the continuous development of science and technology, especially the rapid development of electronic information and electronic communication industries, electronic communication devices are developing towards multi-function, high integration, high power and miniaturization, but traditional metal materials are difficult to meet the needs of modern electronic components. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C9/00C22C32/00C09K5/14
CPCC22C1/1036C22C1/1005C22C9/00C22C32/0084C09K5/14C22C1/1052C22C1/1073
Inventor 戴景杰张红霞孙彩霞张年龙张海龙
Owner QINGDAO BINHAI UNIV