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Modified nanoparticle dispersion strengthened copper alloy, preparation method and application thereof, electronic element and mechanical element

A technology for dispersion strengthening of copper and nanoparticles, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. Dispersion, good mechanical strength, large specific surface area

Active Publication Date: 2020-11-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the oxidation of Cu-Y amorphous in this method, its oxygen partial pressure, oxidation temperature, oxidation time and oxidation degree are difficult to determine, and small changes may affect Cu-Y. 2 o 3 The preparation has a great impact, the process is difficult to control, and it is difficult to promote in industry
[0004] The above-mentioned methods have problems such as complicated production procedures, difficult operation, long production cycle, extremely high requirements on production process control, difficult control of product quality and high production cost, and it is difficult to carry out large-scale production. These problems limit the development of dispersion-strengthened copper alloys. Further develop and promote the application

Method used

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  • Modified nanoparticle dispersion strengthened copper alloy, preparation method and application thereof, electronic element and mechanical element
  • Modified nanoparticle dispersion strengthened copper alloy, preparation method and application thereof, electronic element and mechanical element
  • Modified nanoparticle dispersion strengthened copper alloy, preparation method and application thereof, electronic element and mechanical element

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preparation example Construction

[0047] According to another aspect of the present invention, there is provided a method for preparing the above modified nanoparticle dispersion strengthened copper alloy, comprising the following steps: (a) reacting the nanoparticle and dopamine hydrochloride under alkaline conditions to obtain the modified nanoparticle (b) adding the modified nanoparticles into the copper liquid, mixing uniformly, and then casting to obtain the modified nanoparticles dispersion-strengthened copper alloy.

[0048] The preparation method is scientific and simple. First, the method of surface coating is used to oxidize dopamine hydrochloride under alkaline conditions to form polydopamine, which is coated on the surface of nanoparticles, so that the modified nanoparticles have better high temperature stability, Wettability and dispersion distribution can play the effect of dispersion strengthening copper alloy, and the product quality is easy to control; while if nanoparticles are directly used, ...

Embodiment 1

[0066] A modified nanoparticle dispersion strengthened copper alloy, including copper and modified nanoparticles dispersed in copper, the modified nanoparticles include nanoparticles and polydopamine coated on the surface of the nanoparticles, the nanoparticles are Y 2 o 3 , the average particle diameter of the nanoparticles is 30nm, the thickness of the polydopamine coated on the surface of the nanoparticles is 0.1wt% of the modified nanoparticles;

[0067] The preparation method of the copper alloy comprises the following steps: (a) mixing nanoparticles, dopamine hydrochloride and 0.01mol / L tris buffer solution, adjusting pH=9.5 after mixing, and then reacting under magnetic stirring, Obtain modified nanoparticles; wherein, the mass ratio of nanoparticles and dopamine hydrochloride is 3:8, the reaction temperature is 25°C, and the reaction time is 10h; (b) the modified nanoparticles are packaged in copper tubes, and then placed in a vacuum In the feeding funnel of the induc...

Embodiment 2

[0069] A modified nanoparticle dispersion-strengthened copper alloy. The difference from Example 1 is that in this example, the content of the modified nanoparticle is 0.03wt%. In step (a) of the preparation method, the nanoparticle, dopamine hydrochloride Mix with tris buffer solution of 0.05mol / L, adjust pH=9 after mixing, react under magnetic stirring then, obtain modified nanoparticles; wherein, the mass ratio of nanoparticles and dopamine hydrochloride is 4:10 , the reaction temperature was 25°C, and the reaction time was 18h; the rest were the same as in Example 1.

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Abstract

The invention provides a modified nanoparticle dispersion strengthened copper alloy, a preparation method and application thereof, an electronic element and a mechanical element. The modified nanoparticle dispersion strengthened copper alloy comprises copper and modified nanoparticles dispersed in the copper, wherein the modified nanoparticles comprise nanoparticles and polydopamine coating the surfaces of the nanoparticles; and the preparation method of the copper alloy comprises the following steps that (a) the nanoparticles and dopamine hydrochloride react under the alkaline condition, andthe modified nanoparticles are obtained; and (b) the modified nanoparticles are added into copper liquid, uniformly mixing is conducted, then casting is conducted, and the modified nanoparticle dispersion strengthened copper alloy is obtained. The preparation method is scientific and simple in process, free of special mechanical equipment, easy to implement, low in production cost, capable of greatly shortening the production technological process, wide in application range, high in practicability, obvious and stable in obtained effect, and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the field of non-ferrous metals, in particular to a modified nanoparticle dispersion-strengthened copper alloy, a preparation method and application thereof, electronic components, and mechanical components. Background technique [0002] Copper and copper alloys are widely used in the fields of electronics, machinery manufacturing, aerospace and transportation due to their excellent thermal conductivity, ductility and corrosion resistance. In recent years, with the rapid development of science and technology, various fields have put forward higher requirements for the comprehensive performance of copper and copper alloys. By introducing the second phase strengthening particles into the matrix to hinder the movement of dislocations, it has become one of the effective methods to improve the performance of materials. It has been widely used in the preparation of dispersion strengthened copper alloys. Among them, the size, distribu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/02B82Y30/00
CPCB82Y30/00C22C1/02C22C9/00C22C32/0021
Inventor 杨树峰王田田李京社郭皓刘威袁航
Owner UNIV OF SCI & TECH BEIJING
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