Efficient in-situ preparation method of graphene reinforced copper-based composite material

A copper-based composite material and an in-situ preparation technology, which is applied in the field of preparing graphene-reinforced copper-based composite materials, can solve the problems of poor uniform dispersion of graphene, poor structural integrity, complicated process, etc., and achieves short preparation time, low cost, simple craftsmanship

Active Publication Date: 2014-05-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of poor graphene uniform dispersion, poor structural integrity, and complex process in the existing graphene-reinforced copper-based composite material preparation method, and provides a method for efficiently preparing graphene-reinforced copper-based composite material in situ

Method used

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  • Efficient in-situ preparation method of graphene reinforced copper-based composite material
  • Efficient in-situ preparation method of graphene reinforced copper-based composite material

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specific Embodiment approach 1

[0017] Specific embodiment one: a kind of efficient in-situ preparation method for graphene-reinforced copper-based composite material described in this embodiment is specifically carried out according to the following steps:

[0018] 1. Put the copper powder in the plasma-enhanced chemical vapor deposition vacuum device, evacuate until the pressure is below 5Pa, feed hydrogen gas with a gas flow rate of 18sccm-22sccm, and adjust the vacuuming speed to put the plasma-enhanced chemical vapor deposition in the vacuum device. The pressure is controlled at 190Pa to 210Pa, and the temperature is raised to 500°C to 700°C within 40 minutes under the pressure of 190Pa to 210Pa and hydrogen atmosphere, and the temperature is 500°C to 700°C for 25min to 35min;

[0019] 2. Introduce argon and carbon source gas, adjust the gas flow of hydrogen to 40 sccm, argon gas to 80 sccm, and carbon source gas to 1 sccm to 8 sccm, and adjust the vacuuming speed to vacuum the plasma-enhanced chemical v...

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment differs from Embodiment 1 in that the copper powder described in Step 1 has a purity of 99%-99.99%, and a particle diameter of 100 nm-100 μm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the carbon source gas described in step 2 is methane. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses an efficient in-situ preparation method of a graphene reinforced copper-based composite material, and relates to a method for preparing a graphene reinforced copper-based composite material and the method can be used for solving the problems of poor uniform dispersion, poor structure integrity of grapheme and complex process in the existing preparation method of the graphene reinforced copper-based composite material. The efficient in-situ preparation method of the graphene reinforced copper-based composite material comprises the following steps: putting copper powder in a plasma reinforced chemical vapor deposition vacuum device, introducing hydrogen, preserving heat at high temperature, then introducing argon and carbon source gas, depositing, stopping introducing the carbon source gas after ending the deposition, and finally, cooling below the room temperature to obtain grapheme/copper composite powder, and then primarily pressing, sintering and secondarily pressing the grapheme/copper composite powder to obtain the graphene reinforced copper-based composite material. The method is an efficient in-situ preparation method of a graphene reinforced copper-based composite material.

Description

technical field [0001] The invention relates to a method for preparing a graphene-reinforced copper-based composite material. Background technique [0002] Copper is a common metal in daily life. It is cheap, has excellent electrical and thermal conductivity, and has good plasticity and corrosion resistance. It has a wide range of applications in the industrial field. However, with the continuous development of modern science and technology, the shortcomings of traditional copper and copper alloys such as low strength, poor high temperature performance, and unsatisfactory friction performance have largely limited their application range. Introducing a high-strength second phase into the copper matrix to make it a copper-based composite material can effectively improve the performance of the copper metal itself. The second phase introduced can be fibers or particles, oxides, nitrides, or It is a carbon material, which can be divided into carbon fiber, carbon nanotube, and gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C1/10C22C9/00B22F9/12B22F9/30
Inventor 亓钧雷张天琪张丽霞曹健冯吉才
Owner HARBIN INST OF TECH
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