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Preparation method of rare earth element interface improved copper-graphene

A rare earth element, graphene technology, applied in metal processing equipment, gaseous chemical plating, coating and other directions, can solve problems such as uneven mixing of reinforcement phases

Active Publication Date: 2020-01-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for improving the copper-graphene interface. Copper powder and rare earth element powder are uniformly mixed by dipping and reduction, and the rare earth element reinforced copper is prepared by powder metallurgy through ball milling, in-situ synthesis, and hot pressing process. matrix composite material, which can effectively overcome the shortcomings of uneven mixing of the reinforcing phase in the electrochemical deposition method

Method used

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  • Preparation method of rare earth element interface improved copper-graphene
  • Preparation method of rare earth element interface improved copper-graphene
  • Preparation method of rare earth element interface improved copper-graphene

Examples

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Effect test

Embodiment 1

[0025] 1) 0.43gY(NO 3 ) 2 ·6H 2 O, 20gCu, 3gCu(NO 3 ) 2 Add to a beaker, add absolute ethanol and water and heat in a water bath at 70°C to disperse evenly;

[0026] 2) Obtain a uniformly dispersed mixture that meets the requirements at 700°C H 2 Impregnation and reduction under atmosphere;

[0027] 3) Add 0.4 g of polymethyl methacrylate (PMMA) to the reduced mixture, and ball mill it at 450 rpm for 3 hours under an argon atmosphere to make it evenly mixed;

[0028] 4) In a tubular reduction furnace, graphene is grown by chemical vapor deposition (CVD) under a hydrogen atmosphere at 900°C to obtain a mixed powder containing copper, yttrium oxide and graphene;

[0029] 5) Press the obtained mixed powder into a copper sheet in a hot pressing furnace at 800°C.

Embodiment 2

[0031] 1) 20gCu, 3gCu(NO 3 ) 2 Add to the beaker (do not add Y(NO 3 ) 2 ·6H 2 0), add dehydrated alcohol and water and carry out water bath heating at 70 ℃ to make it uniformly dispersed;

[0032] 2) Obtain a uniformly dispersed mixture that meets the requirements at 700°C H 2 Impregnation and reduction under atmosphere;

[0033] 3) Add 0.4 g of polymethyl methacrylate (PMMA) to the reduced mixture, and ball mill it at 450 rpm for 3 hours under an argon atmosphere to make it evenly mixed;

[0034] 4) In a tubular reduction furnace, graphene is grown by chemical vapor deposition (CVD) under a hydrogen atmosphere at 900°C, and a mixed powder containing copper and graphene is obtained;

[0035] 5) Press the obtained mixed powder into a copper sheet in a hot pressing furnace at 800°C.

Embodiment 3

[0037] 1) 20gCu, 3gCu(NO 3 ) 2 Add to the beaker (do not add Y(NO 3 ) 2 ·6H 2 0), add dehydrated alcohol and water and carry out water bath heating at 70 ℃ to make it uniformly dispersed;

[0038] 2) Obtain a uniformly dispersed mixture that meets the requirements at 700°C H 2 Impregnation and reduction under atmosphere;

[0039] 3) The reduced mixture was ball-milled at 450 rpm for 3 hours under an argon atmosphere to make it evenly mixed;

[0040] 4) Press the obtained mixed powder into a copper sheet in a hot-press furnace at 800°C.

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Abstract

The invention relates to a copper-graphene composite material with an interface improved by rare earth elements. Copper powder is adopted as a base material of the copper-graphene composite material,the adopted graphene is grown in situ on the copper surface through a carbon source, the rare earth elements are added to the interface between copper and graphene for modification, and the bonding strength of the modified interface can be improved by 10%-30% on the premise that the original elongation is guaranteed. The invention also provides a preparation method of the copper-graphene compositematerial.

Description

technical field [0001] The invention relates to a preparation method for improving copper-graphene interface with a novel rare earth element, and belongs to the technical fields of military industry, aerospace, automobile manufacturing, electronic appliances and the like. Background technique [0002] In aerospace, automobile manufacturing and other fields, materials with high strength, high hardness and high resistance to distortion are required. Among them, copper-based composite materials have been widely used in recent years due to their good processing performance, and they have become promising composite materials in the 21st century. Although the traditional reinforcing phase fibers and particles can increase its strength, it will reduce its electrical and thermal conductivity. Therefore, finding a new reinforcing phase is an urgent problem to be solved now. With the first discovery of graphene, it has attracted widespread attention and is now the strongest material i...

Claims

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Application Information

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IPC IPC(8): B22F9/26B22F1/02B22F3/14C23C16/26
CPCB22F9/26B22F3/14C23C16/26C23C16/4417B22F2998/10B22F1/16
Inventor 刘恩佐钱苏宜赵乃勤师春生何春年何芳马丽颖沙军威
Owner TIANJIN UNIV