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A kind of cnts/cu composite material and preparation method thereof

A technology of composite materials and composite powders, which is applied in metal material coating technology, metal processing equipment, transportation and packaging, etc., can solve the problems of poor heat resistance, electrical conductivity to thermal decline, limitations, etc., to solve low electrical conductivity, Effect of Strong Interfacial Bond Strength

Active Publication Date: 2019-05-28
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Copper and copper alloys are widely used in the fields of electrical appliances and electronics due to their excellent electrical and thermal conductivity, but because of their weak strength and poor heat resistance, their application in certain fields is limited
At present, the general improvement technology is to add oxide particles or alloying elements. Although this method improves its mechanical properties, it causes a significant drop in its electrical conductivity and thermal properties.

Method used

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  • A kind of cnts/cu composite material and preparation method thereof
  • A kind of cnts/cu composite material and preparation method thereof
  • A kind of cnts/cu composite material and preparation method thereof

Examples

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Effect test

specific Embodiment 1

[0033] A CNTs / Cu composite material and a preparation method thereof are specifically carried out according to the following steps:

[0034] (1) In the autoclave, put 400g Cr(NO 3 ) 3 ·9H 2 O was dissolved in 4L of 25% ammonia solution, then 500g of electrolytic copper powder was added, the pH was controlled to be 7-8, hydrogen was introduced, and after 2 hours of reaction at a pressure of 5MPa and 80°C, the obtained precipitate was washed, After filtering, drying and grinding, CuCr alloy solid powder is obtained.

[0035] (2) In an electrostatic suspension furnace, chemical vapor deposition of CuCr alloy solid powder is carried out to grow carbon nanotubes, and the temperature is raised to a reaction temperature of 800 °C; 2 The flow is 2300ml / min, C 2 H 4The flow rate is 100ml / min, and the water vapor flow rate is 1200ml / min. After mixing, it is passed into the reaction zone, and CNTs are grown in situ on the surface of CuCr alloy for 1 hour to obtain CNTs / Cu composite ...

specific Embodiment 2

[0037] A kind of CNTs / Cu composite material and preparation method thereof, specifically carry out according to the following steps:

[0038] (1) In the autoclave, 500g Ni(NO 3 ) 2 ·6H 2 O was dissolved in 4L of 25% ammonia solution, then 500g of electrolytic copper powder was added, the pH was controlled to be 7-8, hydrogen gas was introduced, and the reaction was carried out at 3MPa and 150°C for 1 hour, and the obtained precipitate was washed, After filtering, drying and grinding, CuNi alloy solid powder is obtained.

[0039] (2) In the electrostatic suspension furnace, the CuNi alloy solid powder is subjected to chemical vapor deposition to grow carbon nanotubes, and the temperature is raised to a reaction temperature of 750 °C; 2 The flow rate is 2500ml / min, C 2 h 4 The flow rate is 200ml / min, and the water vapor flow rate is 1300ml / min. After mixing, it is passed into the reaction zone, and CNTs are grown on the CuNi alloy surface in situ for 90min to obtain CNTs / Cu...

specific Embodiment 3

[0041] A kind of CNTs / Cu composite material and preparation method thereof, specifically carry out according to the following steps:

[0042] (1) In the autoclave, 250g Cr(NO 3 ) 3 9H 2 O and 250g Ni(NO 3 ) 2 ·6H 2 Dissolve O in 4L of 25% ammonia solution, then add 500g of electrolytic copper powder, control the pH to 7-8, pass in hydrogen gas, react for 2 hours under the pressure of 1MPa and 100°C, wash and filter the obtained precipitate , drying and grinding to obtain CuCrNi alloy solid powder.

[0043] (2) In an electrostatic suspension furnace, CuCrNi alloy solid powder is subjected to chemical vapor deposition to grow carbon nanotubes, and the temperature is raised to a reaction temperature of 800 °C; 2 The flow rate is 2400ml / min, C 2 h 4 The flow rate is 150ml / min, and the water vapor flow rate is 1500ml / min. After mixing, it is passed into the reaction zone, and CNTs are grown in situ on the surface of CuCrNi alloy for 30min to obtain CNTs / Cu composite powder....

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Abstract

The invention discloses a CNTs / Cu composite material and a preparation method thereof. The present invention firstly prepares copper alloy powder with catalytic activity, secondly uses the copper alloy powder with catalytic activity as a matrix, prepares CNTs / Cu composite powder by water-assisted CVD method, and finally prepares CNTs / Cu composite material by spark plasma sintering (SPS) , the sintering temperature is 900‑1100 °C. The composite material prepared by the invention has excellent properties such as electrical conductivity and strength, can be used in the fields of electrical appliances and electronics, and has a simple preparation method, low cost, and easy implementation and control of the preparation process.

Description

technical field [0001] The invention belongs to the technical field of metal matrix composite materials, and in particular relates to a CNTs / Cu composite material in which CNTs can be uniformly distributed in Cu and has strong interfacial bonding force and a preparation method thereof. Background technique [0002] With the development of the times, the performance of traditional materials can no longer meet people's requirements. Therefore, composite materials have gradually become the focus of research. The composite material consists of a continuous matrix phase and a dispersed strengthening phase, which are connected by a phase interface. There are many types of composite materials, but metal matrix composites have become a research hotspot due to their high electrical and thermal conductivity, high strength and excellent wear resistance. [0003] Copper and copper alloys are widely used in electrical and electronic fields due to their excellent electrical and thermal c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/05C22C9/00C22C9/01B22F1/02C23C16/26
CPCC22C1/05C22C9/00C22C9/01C23C16/26B22F2003/1051C22C2026/002B22F1/16
Inventor 周洪雷刘平陈小红李伟付少利赵良燕徐凯范军刘新宽
Owner UNIV OF SHANGHAI FOR SCI & TECH
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