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Graphene reinforced aluminum-based composite material with high conductivity and preparation method thereof

A technology for strengthening aluminum-based and composite materials, which is applied in the field of aluminum alloy smelting and rolling in the metallurgical industry, which can solve the problems of decreased electrical conductivity of aluminum alloys, and achieve the effects of increased strength, excellent performance, and high electrical conductivity

Active Publication Date: 2021-11-30
WUHAN RES INST OF MATERIALS PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-conductivity graphene-reinforced aluminum-based composite material and its preparation method, focusing on solving the problem that the conductivity of aluminum alloy gradually decreases with the increase of strength

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  • Graphene reinforced aluminum-based composite material with high conductivity and preparation method thereof
  • Graphene reinforced aluminum-based composite material with high conductivity and preparation method thereof

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Embodiment Construction

[0040] The present invention is described in detail below:

[0041] Table 1 is the value list of each embodiment 1-5 of the present invention and comparative example 1,2;

[0042] Table 2 is a list of the performance testing of each of Examples 1-5 and Comparative Examples 1 and 2 of the present invention.

[0043] Each embodiment of the present invention is prepared according to the following steps:

[0044] 1) Dry all raw materials in a drying oven for 2 hours to remove moisture. Raw materials include graphene, aluminum powder, and aluminum block;

[0045] 2) After the graphene is roughened, sensitized and activated, electroless aluminum plating is performed in an aluminum solution at room temperature.

[0046] 3) Heat the aluminum block at 750-800°C until it melts, and pass in argon for protection;

[0047] 4) Heating the forming abrasive to 300°C;

[0048] 5) Pour a spoonful of molten aluminum into the mold to form a solidified layer of molten aluminum, and then spread a...

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Abstract

The invention discloses a graphene reinforced aluminum-based composite material with high conductivity and a preparation method thereof. The preparation method comprises the steps that firstly, chemical aluminum plating is conducted on the surface of graphene through a chemical plating method, and aluminum-plated graphene powder is obtained; an aluminum block is melted into molten aluminum in a crucible furnace, and a mold is heated to a temperature lower than the aluminum melting point temperature; the molten aluminum and aluminized graphene powder are alternately poured into the mold for layered casting, and a sandwich structure composed of a molten aluminum solidification layer and an aluminized graphene powder layer is obtained; the sandwich structure is extruded into a cuboid test block, the cuboid test block is heated to 500-600 DEG C, heat preservation is carried out for a certain time, and forging treatment is performed; after cooling to room temperature, longitudinal cold deformation is performed; and finally, annealing treatment is performed under the protection of inert gas to obtain the graphene reinforced aluminum-based composite material with high conductivity. By means of the preparation method, the problem that the wettability of graphene and aluminum-based materials is poor is effectively solved, the graphene is evenly dispersed in the aluminum-based materials, and the strength of the aluminum-based materials is effectively improved on the premise that the high conductivity of an aluminum matrix is kept.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy smelting and rolling in the metallurgical industry, and relates to a preparation method for improving the conductivity and strength of aluminum materials, in particular to a graphene-reinforced aluminum-based composite material and a preparation method thereof, and focuses on solving the problem of the conductivity of aluminum materials Sexuality gradually decreases with increasing intensity. Background technique [0002] Pure aluminum has the advantages of low density, low melting point, strong corrosion resistance, good thermal conductivity and electrical conductivity, and has been valued. The aluminum alloy material derived from it has good plasticity and can be processed into various profiles, and is widely used in industry. The amount is second only to steel, and has become an indispensable alloy system in the field of materials. With the development of economy and social progress, th...

Claims

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Application Information

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IPC IPC(8): C22C1/10C22C21/00C22C32/00
CPCC22C1/101C22C1/1036C22C21/00C22C32/0084C23C18/1692C23C18/1639C23C18/52C23C18/1691C23C18/31
Inventor 段海涛李银华凃杰松李健李辛庚樊志斌贾丹詹胜鹏杨田丁运虎马利欣
Owner WUHAN RES INST OF MATERIALS PROTECTION
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