Graphene-aluminum oxide hybrid reinforced copper-based composite material and preparation method thereof

Abstract

The invention discloses a graphene-aluminum oxide hybrid reinforced copper-based composite material. The composite material comprises 0.1-1.0 wt% of graphene, 1.0-1.2 wt% of Al2O3, and the balance copper. According to the copper-based composite material, the graphene and the aluminum oxide are adopted as complex-phase reinforcement bodies, zero-dimensional aluminum oxide particles can be effectively pinned through a special two-dimensional structure of a nano graphene sheet, a steric-hinerance effect is generated, accordingly, the agglomeration phenomenon of the particles is effectively reduced, and the particles are uniformly scattered; and the surface of the graphene is subjected to chemical nickel-plating and modification treatment, thus, the wettability and the interface bonding situation between the graphene / copper matrixes can be obviously improved, ideal interface bonding is achieved, accordingly, the synergistic effect between the graphene and the aluminum oxide particles is realized to the greatest extent, and the combination properties including strength, hardness, electrical conductivity, and friction and wear properties of the copper-based composite material are comprehensively improved.

Description

technical field [0001] The invention relates to the technical field of preparation of copper-based composite materials, in particular to a graphene-alumina hybrid reinforced copper-based composite material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of aerospace technology, aerospace, electronic communication, rail transit and other fields, the demand for materials with wide temperature range, high strength, high conductivity, high heat resistance, excellent self-lubricating and wear-reducing functions has become increasingly strong. Traditional Single metal materials have been difficult to meet the actual needs, and material compounding has become an inevitable trend of its development. [0003] As an important part of the field of metal matrix composites, copper matrix composites have attracted the attention of many researchers. Traditional copper-based composite materials often use SiC, Al 2 o 3 、Si 3 N ...

AI Technical Summary

Problems solved by technology

However, the steps of this method are cumbersome, and there is a possibility of incomplete reduction of graphene oxide

[0007] In addition, some research has been carried out in the field of multi-phase reinforcement hybrid reinforced copper-based composite materials. For example, patent CN102978434A discloses a short fiber and particle synergistically reinforced copper-based composite material and its preparation method. The short fiber is carbon nanometer Tube, nano-carbon fiber, ceramic fiber, etc., the reinforcing particles are alumina, zirconia, titanium dioxide, titanium carbide, tungsten carbide, etc. Composite materials are obtained through mixing, forming, sintering, and processing. Some performance indicators of composite materials have certain advantages. But other performance indicators are still not satisfactory

However, there is no report on copper matrix composites reinforced by hybrid reinforcement using graphene-alumina as a multiphase reinforcement.

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