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Graphene/silicon carbide reinforced copper-based composite material and preparation method thereof

A technology of copper-based composite materials and composite materials, which is applied in the field of graphene/silicon carbide reinforced copper-based composite materials and its preparation, can solve the problem of low comprehensive performance of graphene-copper-based composite materials, large specific surface area of ​​graphene, and practical process Complicated problems, to achieve good application prospects, fine matrix grains, raw material selection and reasonable proportioning effect

Inactive Publication Date: 2020-04-24
湖南碳材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the preparation methods of graphene-reinforced copper-based composite materials are mainly powder metallurgy, hydrothermal method, chemical deposition method and in-situ growth method, etc., but due to the large specific surface area of ​​graphene and easy agglomeration, the prepared graphite The overall performance of copper-based composites is not high
[0005] The Chinese patent application number 201610659237.X discloses a graphene / copper composite material and its preparation method and application. The graphene / copper composite material contains the following components in weight percentage: graphene 1.2-3.6wt%, Sn0 .5-1.0wt%, Ni 0.05-0.3wt%, the balance is copper, the preparation method of preparing graphene / copper composite material includes weighing, preparation of powder suspension, preparation of composite powder, cold pressing and hot pressing sintering four steps, the performance of the prepared composite material is relatively excellent, but in the preparation process, it is necessary to reduce graphene oxide to graphene for cold pressing and hot pressing sintering, the actual process is more complicated, It also makes the production cost higher
At the same time, the strength, toughness and wear resistance of the graphene / copper composite prepared by this method are still limited, so further optimization is needed

Method used

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  • Graphene/silicon carbide reinforced copper-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A graphene / silicon carbide reinforced copper-based composite material, which contains the following components in weight percentage: graphene: 0.5wt%, SiC: 0.6wt%, Ni: 0.1wt%, and the balance is copper.

[0031] The preparation method of above-mentioned graphene / silicon carbide reinforced copper matrix composite material, comprises the following steps:

[0032] (1) The original copper powder is pretreated. The method is: put the original copper powder in a 5mol / L acetic acid solution for 20 minutes; after cleaning with distilled water, place it in ethanol and propanol for 25 minutes, filter, and vacuum dry. instant;

[0033] Pre-mix the pretreated copper powder, ultrafine silicon carbide powder, and nickel powder in a high-speed mixer for 10 hours to obtain a mixed powder;

[0034] The particle size of the above raw copper powder is 1-5 μm; the particle size of the superfine silicon carbide powder is 20-50 nm; the particle size of the nickel powder is 10-20 μm.

[003...

Embodiment 2

[0042] A graphene / silicon carbide reinforced copper-based composite material, which contains the following components in weight percentage: graphene: 0.45wt%, SiC: 0.4wt%, Ni: 0.05wt%, and the balance is copper.

[0043] The preparation method of above-mentioned graphene / silicon carbide reinforced copper matrix composite material, comprises the following steps:

[0044] (1) The original copper powder is pretreated. The method is: put the original copper powder in a 5mol / L acetic acid solution for 20 minutes; after cleaning with distilled water, place it in ethanol and propanol for 25 minutes, filter, and vacuum dry. instant;

[0045] Pre-mix the pretreated copper powder, ultrafine silicon carbide powder, and nickel powder in a high-speed mixer for 10 hours to obtain a mixed powder;

[0046] The particle size of the above original copper powder is 1-5 μm; the particle size of the superfine silicon carbide powder is 20-50 nm; the particle size of the nickel powder is 10-20 μm. ...

Embodiment 3

[0054] A graphene / silicon carbide reinforced copper-based composite material, which contains the following components in weight percentage: graphene: 0.55wt%, SiC: 0.55wt%, Ni: 0.12wt%, and the balance is copper.

[0055] The preparation method of above-mentioned graphene / silicon carbide reinforced copper matrix composite material, comprises the following steps:

[0056] (1) The original copper powder is pretreated. The method is: put the original copper powder in a 5mol / L acetic acid solution for 20 minutes; after cleaning with distilled water, place it in ethanol and propanol for 25 minutes, filter, and vacuum dry. instant;

[0057] Pre-mix the pretreated copper powder, ultrafine silicon carbide powder, and nickel powder in a high-speed mixer for 8 hours to obtain a mixed powder;

[0058] The particle size of the above original copper powder is 1-5 μm; the particle size of the superfine silicon carbide powder is 20-50 nm; the particle size of the nickel powder is 10-20 μm. ...

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Abstract

The invention provides a graphene / silicon carbide reinforced copper-based composite material and a preparation method thereof, and relates to the technical field of copper-based composite materials. The graphene / silicon carbide reinforced copper-based composite material contains the following components of, in percentage by weight, 0.3wt%-0.8wt% of graphene, 0. 2wt%-0.6wt% of SiC, 0. 02wt%-0.2wt%of Ni, and the balance copper; the preparation method comprises the following steps that (1) mixing is carried out; (2) ultrasonic dispersion on graphene is carried out, mixed powder and stearic acidare added, ultrasonic dispersion is carried out, and then mixing and stirring are carried out; (3) ball milling is carried out; (4) drying is carried out; the stearic acid is removed; (5) pre-pressingforming is carried out, and a pressed shape is loaded into a graphite mold; and (6) vacuum hot pressing is carried out, wherein the hot pressing temperature is 840-860 DEG C, the hot pressing pressure is 40-50 MPa, the hot pressing time is 100-130 min; and (7) hot rolling is carried out; the temperature is heated to 360-400 DEG C, heat preservation is carried out, then the temperature is reducedto 160-180 DEG C, and then air cooling is carried out. According to the preparation method, the raw material selection and the raw material proportion are reasonable, and an optimized preparation process is combined, so that the prepared composite material has the advantages of being good in conductive performance, high in strength, high in hardness, good in toughness and excellent in wear resistance.

Description

technical field [0001] The invention relates to the technical field of copper-based composite materials, in particular to a graphene / silicon carbide reinforced copper-based composite material and a preparation method thereof. Background technique [0002] Graphene is a two-dimensional material with only a single atomic layer thickness, composed of carbon atoms through sp 2 It is formed by the combination of hybrid orbitals. In 2004, a physicist at the University of Manchester in the United Kingdom successfully separated the mechanical application technology in the experiment for the first time. It is considered to be the composition of all other dimensional graphitic materials (wrapped into fullerenes, rolled into carbon nanotubes) , stacked into graphite) basic modules. Graphene is only 0.35nm thick, making it the thinnest two-dimensional material in the world. At the same time, the stable regular hexagonal lattice structure gives it many unique properties, such as: carri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/05C22C1/10B22F9/04B22F3/02B22F3/14B22F3/18B22F1/00
CPCC22C9/00C22C1/051B22F9/04B22F3/02B22F3/14B22F3/18B22F2009/043B22F2009/042B22F2999/00B22F2998/10B22F1/052B22F2201/20
Inventor 汪全芳
Owner 湖南碳材科技有限公司
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