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Novel nanometer phase dispersion strengthening cuprum as well as preparation method and product producing technique thereof

A dispersion-strengthened copper and dispersion-strengthened technology, applied in the field of dispersion-strengthened copper and its preparation, can solve the problems of poor wettability of enhanced phases, difficult to control interphase products, achieve low characteristics and costs, avoid extremely strict equipment and process control requirements, high yield effect

Inactive Publication Date: 2008-08-27
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above technologies all have more or less limitations in that the interphase products are difficult to control, and the wettability between the matrix and the reinforcement phase is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: Preparation of nano-phase dispersion-strengthened copper by in-situ reaction of aluminum powder and cuprous oxide;

[0027] The specific steps are:

[0028] The first step: at room temperature and nitrogen gas conditions, the metal aluminum powder and cuprous oxide powder are mixed in a ratio of 1:1, and ball milled for 12 hours in a ball mill at a controlled speed of 400 rpm. Under a nitrogen atmosphere, copper alloy powders with nano-sized aluminum oxide and aluminum nitride composite reinforcement phases were synthesized in situ in a single step in a copper matrix by mechanically alloying cuprous oxide and metallic aluminum powder. The specific in-situ reaction is: Al+N->AlN or Cu 2 O+Al->Cu+Al 2 o 3 Wait. And form a copper alloy powder with a nano-reinforced phase in the copper matrix by an in-situ reaction synthesis method;

[0029] Step 2: annealing the copper alloy powder at 600° C. and reducing hydrogen for 3 hours to increase the size of the cop...

Embodiment 2

[0038] Example 2: Preparation of nano-phase dispersion-strengthened copper by in-situ reaction of ytterbium powder and cuprous oxide;

[0039] The specific steps are:

[0040] The first step: at room temperature and argon gas conditions, the metal ytterbium powder and cuprous oxide powder are mixed in a ratio of 1:2, and ball milled for 12 hours in a ball mill at a controlled speed of 400 rpm. Under argon atmosphere, ytterbium oxide-copper composite powder with nanometer ytterbium oxide reinforcement phase was synthesized in situ in a copper matrix by mechanically alloying cuprous oxide and metal ytterbium powder. The specific in situ reaction is: 3Cu 2 O+2Y=(6Cu, Y 2 o 3 )Wait. And form a copper alloy powder with a nano-reinforced phase in the copper matrix by an in-situ reaction synthesis method;

[0041] Step 2: annealing the copper alloy powder at 600° C. and reducing hydrogen for 3 hours to increase the size of the copper alloy composite powder to ~1.5 microns and re...

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PUM

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Abstract

The invention relates to a dispersion-strengthened copper, the process for preparation thereof and the productive technology of products. The content of dispersion strengthening phase in dispersion-strengthened copper is 0.5-1.25wt%, the size of dispersion strengthening phase particle is 0.01-0.05um, and the distance is 0.1-0.5um. The process for preparing the nano-phase dispersion-strengthened copper comprises the following steps: firstly, mixing aluminium, ytterbium, lanthanum, cerium or zirconium powder with cuprous oxide powder in indoor temperature or inactive gas, and forming copper alloy powder with nanometer reinforcing phase in a copper base body through an in situ reaction synthesis method and through mechanical alloy, secondly, annealing under inactive gas, thirdly, milling compound powder and electrolytic copper powder in a second step with high energy to get nano-phase dispersion-strengthened copper alloy. Section bars which are needed are prepared through utilizing dispersion-strengthened copper which is got to anneal and do isostatic cool pressing, sintering densification and cold working. The process for preparing dispersion-strengthened copper has the advantages of low production cost, high yield and simple technique, and relative products which are prepared have excellent combination properties such as heat conductivity and electric conductivity.

Description

technical field [0001] The invention relates to a dispersion-strengthened copper and its preparation method and product production process, in particular to a method of adding a dispersion-strengthened second phase through a high-energy ball milling method and preparing a new nano-phase dispersion-strengthened copper through an in-situ reaction synthesis method and The production process of the novel nano-phase dispersion strengthened copper and related products obtained by the preparation method. Background technique [0002] Dispersion strengthened copper is a high-strength and high-conductivity copper-based composite material. As an important functional material, dispersion-strengthened copper has been widely used in industrial fields such as automobiles, batteries, electronic packaging, and microwave devices due to its excellent comprehensive properties such as high strength and high conductivity. Dispersion strengthened copper is used to prepare resistance welding elec...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/04C22F1/08
Inventor 刘绍军
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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