Preparation method of graphene reinforced metal-matrix composite

Abstract

The invention discloses a preparation method of a graphene reinforced metal-matrix composite, which comprises the following steps of: firstly, dispersing the graphene oxide on the surface of the flaky metal powder; and then obtaining the graphene / metal composite powder through the reducing treatment; and at last, carrying out densification treatment by adopting a powder metallurgic technology to obtain the compact graphene reinforced metal-matrix composite. The flaky metal powder has the plane two-dimensional form, is inclined to the directional piling to form a laminated structure, and is helpful for inducing the graphene orientation distribution and giving play to the reinforcing effect. The preparation method disclosed by the invention is simple and feasible, is capable of regulating the graphene content and is suitable for preparing the massive composite.

Description

technical field

[0001] The invention relates to a material in the technical field of composite materials and a preparation method thereof, in particular to a preparation method of a graphene-reinforced metal matrix composite material. Background technique

[0002] Graphene is a new type of two-dimensional planar carbonaceous nanomaterial discovered and synthesized in recent years, with unparalleled high electron mobility (~200000 cm 2 / V s), thermal conductivity (~5000 W / m K), Young's modulus (1100 GPa) and fracture strength (125GPa), exhibiting excellent electrical, thermal and mechanical properties. Compared with carbon nanotubes, graphene has similar physical properties, larger specific surface area and lower production cost, so graphene is not only optimistic about the next generation of electronic materials, but also is expected to replace carbon nanotubes as future composite materials. Ideal filler or reinforcement. Therefore, the research and development of graphene...

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