Preparation method for metal-clad graphene reinforced metal matrix composites

A graphene composite and metal cladding technology, applied in metal material coating process, metal processing equipment, transportation and packaging, etc., can solve problems such as poor interface bonding, reduce agglomeration, improve compatibility, and simple process. Effect

Active Publication Date: 2018-07-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the problems existing in the prior art, the purpose of the present invention is to solve the problem of poor interface bonding between the surface of carbon nanotubes and the metal matrix, and provide a method f

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] A method for preparing a metal-coated graphene-reinforced metal matrix composite material. The preparation method is carried out in the following steps:

[0023] a The powdered graphene surface is reduced and coated with metal in situ to obtain metal-coated graphene composite powder;

[0024] b Ball milling and mixing the metal-coated graphene composite powder and metal powder to prepare the metal-coated graphene composite powder / metal mixed powder;

[0025] c Using powder metallurgy warm pressing process, the metal-coated graphene / metal mixed powder is warm-pressed and molded, sintered, and the composite material is processed and molded by extrusion, forging, and rolling, to obtain the metal-clad Graphene reinforced metal matrix composite materials;

[0026] The in-situ reduction of coated metal on the surface of graphene involves the following steps:

[0027] a Press the powdered graphene into a tablet, the thickness of which is 0.01cm;

[0028] b Use the pres...

Example Embodiment

[0033] Example 2

[0034] A method for preparing a metal-coated graphene-reinforced metal matrix composite material. The preparation method is carried out in the following steps:

[0035] a The powdered graphene surface is reduced and coated with metal in situ to obtain metal-coated graphene composite powder;

[0036] b Ball milling and mixing the metal-coated graphene composite powder and metal powder to prepare the metal-coated graphene composite powder / metal mixed powder;

[0037] c Using powder metallurgy warm pressing process, the metal-coated graphene / metal mixed powder is warm-pressed and molded, sintered, and the composite material is processed and molded by extrusion, forging, and rolling, to obtain the metal-clad Graphene reinforced metal matrix composite materials;

[0038] The in-situ reduction of coated metal on the surface of graphene involves the following steps:

[0039] a Press the powdered graphene into a tablet, the thickness of which is 0.1cm;

[0040] b Use the press...

Example Embodiment

[0045] Example 3

[0046] A method for preparing a metal-coated graphene-reinforced metal matrix composite material. The preparation method is carried out in the following steps:

[0047] a The powdered graphene surface is reduced and coated with metal in situ to obtain metal-coated graphene composite powder;

[0048] b Ball milling and mixing the metal-coated graphene composite powder and metal powder to prepare the metal-coated graphene composite powder / metal mixed powder;

[0049] c Using powder metallurgy warm pressing process, the metal-coated graphene / metal mixed powder is warm-pressed and molded, sintered, and the composite material is processed and molded by extrusion, forging, and rolling, to obtain the metal-clad Graphene reinforced metal matrix composite materials;

[0050] The in-situ reduction of coated metal on the surface of graphene involves the following steps:

[0051] a Press the powdered graphene into a tablet, where the thickness of the tablet is 0.05 cm;

[0052] b ...

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Abstract

The invention discloses a preparation method for metal-clad graphene reinforced metal matrix composites. The preparation method comprises the following steps that powder graphene is subjected to in-situ reduction and clad with metal to obtain metal-clad graphene composite powder, and then the metal-clad graphene composite powder and metal power are subjected to ball milling, and mixed to obtain metal-clad graphene/metal mixed powder; and the metal-clad graphene/metal mixed powder is subjected to warm compaction, molding and sintering with a power metallurgy warm compaction technology, and composites are machined and formed through extrusion, forging and pressing, rolling and other technologies. According to the preparation method, through metallization modification of the graphene surface,the wettability of the composites with metal matrix is improved, and the composites are liable to disperse in the metal matrix as reinforcements so that the mechanical properties of the metal are improved; and the preparation method is simple and has broad application prospects.

Description

technical field [0001] The invention relates to a method for preparing a metal-coated graphene-reinforced metal matrix composite material, and belongs to the technical field of composite material preparation. . technical background [0002] With the continuous development of aerospace and automobile manufacturing technology, lightweight, high-strength metal matrix composites have received extensive attention and research. As a lightweight material with excellent mechanical, electrical, and thermal properties, carbon nanomaterials have been widely used in metal matrix composites, catalysis, and energy in recent years. Among them, graphene is a new type of two-dimensional planar carbonaceous nanomaterial discovered and synthesized in recent years, with unparalleled high electron mobility (~200000cm 2 / V·s), thermal conductivity (~5000W / m·K), Young's modulus (1100GPa) and breaking strength (125GPa), exhibiting excellent electrical, thermal and mechanical properties. Therefor...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C1/10B22F1/02B22F3/14B22F3/10C23C18/31
CPCC22C1/05C23C18/31B22F3/1017B22F3/14B22F2003/145B22F2998/10B22F1/17B22F3/24
Inventor 方东鲍瑞易健宏李秀娟
Owner KUNMING UNIV OF SCI & TECH
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