Carbon nanotube-metal composite enhanced copper-based composite material and preparation method thereof

A copper-based composite material and carbon nanotube technology are applied in the field of carbon nanotube-metal composite reinforced copper-based composite materials and their preparation, which can solve the problems of low copper hardness and yield strength, restricted application, creep resistance and anti-melting performance. Poor welding performance and other problems, to achieve the effect of improving the agglomeration of reinforcements, high production efficiency, and excellent comprehensive performance

Active Publication Date: 2014-08-13
NINGBO CPX ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hardness and yield strength of copper are low, and the creep resistance and welding resistance ar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The components of the carbon nanotube-metal composite reinforced copper-based composite material prepared in this example are: Cu-0.1wt%CNTs-0.1wt%Fe, wherein the average diameter of the carbon nanotubes is 40-60nm, and the average The length is 5~15μm. The specific process and steps are as follows:

[0024] According to the proportion of Fe in the copper-based composite material being 0.1% by mass, weigh 0.7234g and 379.4366g of ferric nitrate nonahydrate and copper nitrate trihydrate respectively, add them to an appropriate amount of deionized water, and stir continuously to dissolve them completely , to obtain a mixed solution. Then add 0.1000g of mixed acid purified carbon nanotubes (CNTs) to the mixed solution; the mixed acid purification process of carbon nanotubes is as follows: 2 SO 4 : HNO 3 Purified by a 1:3 mixed acid, and then washed, filtered, and dried (the same for the following examples). Thereafter, it was sonicated for 1 hour to obtain a sol. The...

Embodiment 2

[0027] The components of the carbon nanotube-metal composite reinforced copper matrix composite material produced in this example are: Cu-0.1wt%CNTs-1wt%Fe, wherein the average diameter of the carbon nanotubes is 40~60nm, and the average length 5~15μm. The specific process and steps are as follows:

[0028] According to the proportion of Fe in the copper-based composite material of 1% mass fraction, weigh 7.2334g and 376.0148g of ferric nitrate nonahydrate and copper nitrate trihydrate respectively, add them to an appropriate amount of deionized water, and stir continuously to dissolve them completely , to obtain a mixed solution. Then, 0.1000 g of carbon nanotubes (CNTs) purified by the mixed acid were added to the mixed solution, and ultrasonically treated for 1 hour to obtain a sol. The sol is sprayed and granulated under a spray dryer to obtain nano-scale mixed powder.

[0029] The mixed powder was first calcined in a nitrogen atmosphere at 600°C for 3 hours to obtain a...

Embodiment 3

[0031] The components of the carbon nanotube-metal element composite reinforced copper matrix composite material prepared in this example are: Cu-1wt%CNTs-1wt%Fe, wherein the average diameter of the carbon nanotubes is 40~60nm, and the average length 5~15μm. The specific process and steps are as follows:

[0032] According to the proportion of Fe in the copper-based composite material of 1% mass fraction, weigh 7.2334g and 372.5931g of ferric nitrate nonahydrate and copper nitrate trihydrate respectively, add them to an appropriate amount of deionized water, and stir continuously to dissolve them completely , to obtain a mixed solution. Then, 1.0000 g of carbon nanotubes (CNTs) purified by mixed acid were added to the mixed solution, and ultrasonic treatment was performed for 1 hour to obtain a sol. The sol is sprayed and granulated under a spray dryer to obtain nano-scale mixed powder.

[0033] The mixed powder was first calcined in a nitrogen atmosphere at 600°C for 3 hou...

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Abstract

The invention relates to a carbon nanotube-metal composite enhanced copper-based composite material and a preparation method thereof, and belongs to the field of preparation of composite materials. The preparation method comprises the following steps: preparing colloidal sol by using soluble salts containing metallic elements and copper ions and carbon nanotube as raw materials, carrying out spray granulation by using the colloidal sol through a spray dryer so as to obtain nanoscale mixed powder, calcining the mixed powder in an oxygen-free atmosphere so as to obtain black powder, reducing the black powder in a hydrogen atmosphere so as to obtain carbon nanotube-metallic element composite enhanced copper-based powder, carrying out isostatic press moulding on the mixed powder, and then sintering in the hydrogen atmosphere so as to obtain the carbon nanotube-metallic element composite enhanced copper-based composite material, wherein the content of a metallic element X in the composite material is 0.1-2wt%, and the content of the carbon nanotube in the composite material is 0.1-2wt%. The preparation method has the advantages that corresponding carbides can be formed, the problem of reinforcement agglomeration caused by poor interface bonding between reinforcement and a copper matrix is solved, and the copper-based composite material with excellent combination properties can be obtained.

Description

technical field [0001] The invention belongs to the technical field of composite materials and preparation thereof, and in particular relates to a carbon nanotube-metal composite reinforced copper-based composite material and a preparation method thereof. Background technique [0002] Copper has become one of the most practical pure metals due to its high electrical conductivity, high thermal conductivity, and good ductility. However, the hardness and yield strength of copper are low, and the creep resistance and welding resistance are also poor, thus restricting its application in electronics, electrical appliances and some other industrial fields. Since the 1960s, researchers have added reinforcements to the copper matrix to prepare copper-based composites with higher strength and wear resistance, while maintaining the excellent electrical and thermal conductivity of the copper matrix. At present, common reinforcement materials include: ① fiber reinforcements such as alum...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/10C22C1/05
Inventor 许龙山吴玉蓉胡柏新陈鹏昇郑雯颖
Owner NINGBO CPX ELECTRONICS TECH
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