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Self-propagating high temperature synthesis preparation method of titanium carbide dispersion strengthening copper-based composite material

A copper-based composite material and dispersion-strengthened copper technology, which is applied in the field of metal-based composite material preparation, can solve the problems of increasing the preparation process and increasing production costs, and achieve the effects of shortening the process route, low production costs, and reducing production costs

Inactive Publication Date: 2010-05-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can successfully prepare TiC dispersion-strengthened copper-based composite materials, but it needs to prepare ultra-fine and high-purity tin-titanium carbide powder first, which increases the preparation process and increases the production cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: be 150 orders with granularity, the Cu powder that purity is 99.9%, Ti powder and C powder are raw material, earlier with a certain amount of Cu powder, Ti powder and C powder (Cu powder and Ti+C powder The mass ratio is 50:50, wherein the molar ratio of Ti powder and C powder is 1:1) and mix evenly, put the steel ball and the mixed powder with a ball-to-material ratio of 20:1 into a ball mill jar in a glove box filled with argon In the process, the mixture of ball materials accounts for 15% of the inner cavity volume of the ball mill tank; high-energy ball milling is carried out at room temperature at a speed of 1000 rpm for 3 hours; then the mixed powder after ball milling is cold-pressed into a cylindrical blank of Ф30mm×30mm; finally The compact was ignited by an electric arc in a vacuum chamber, and the TiC dispersion-strengthened copper-based composite material was prepared by self-propagating high-temperature synthesis of the compact. The average par...

Embodiment 2

[0014] Embodiment 2: be 200 orders with granularity, the Cu powder that purity is 99.9%, Ti powder and C powder are raw material, earlier with a certain amount of Cu powder, Ti powder and C powder (Cu powder and Ti+C powder The mass ratio is 60:40, wherein the molar ratio of Ti powder and C powder is 1:1) and mix evenly, put the steel ball and the mixed powder with a ball-to-material ratio of 40:1 into a ball mill jar in a glove box filled with argon In the process, the mixture of ball materials accounts for 25% of the inner cavity volume of the ball mill tank; high-energy ball milling is carried out at room temperature at a speed of 1500 rpm for 6 hours; then the mixed powder after ball milling is cold-pressed into a cylindrical blank of Ф30mm×30mm; finally The compact was ignited by an electric arc in a vacuum chamber, and the TiC dispersion-strengthened copper-based composite material was prepared by self-propagating high-temperature synthesis of the compact. The average par...

Embodiment 3

[0015] Embodiment 3: be 300 orders with granularity, the Cu powder that purity is 99.9%, Ti powder and C powder are raw material, earlier with a certain amount of Cu powder, Ti powder and C powder (Cu powder and Ti+C powder The mass ratio is 70:30, wherein the molar ratio of Ti powder and C powder is 1:1) and mix evenly, put the steel ball and the mixed powder with a ball-to-material ratio of 80:1 into a ball mill jar in a glove box filled with argon In the process, the mixture of ball materials accounts for 35% of the inner cavity volume of the ball mill tank; high-energy ball milling is carried out at room temperature at a speed of 2000 rpm for 9 hours; then the mixed powder after ball milling is cold-pressed into a cylindrical blank of Ф30mm×30mm; finally The compact is ignited by an electric arc in a vacuum chamber, and the TiC dispersion-strengthened copper-based composite material is prepared by self-propagating high-temperature synthesis of the compact. The average parti...

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Abstract

The invention discloses a self-propagating high temperature synthesis preparation method of a titanium carbide dispersion strengthening copper-based composite material, which utilizes Cu powder, Ti powder and C powder with the granularity less than 100 meshes and the purity larger than 99% as raw materials, wherein the mass ratio of Cu powder to Ti powder to C powder is 50:50-70:30, and the mol ratio of Ti powder to C powder is 1:1. The preparation method comprises the following steps: mixing a certain amount of Cu powder, Ti powder and C powder, then carrying out high energy ball mill for 3-10 hours at room temperature, carrying out cold press molding on the mixed powder, finally adopting electric arc to ignite pressed shapes in a vacuum room to prepare the TiC dispersion strengthening copper-based composite material through the self-propagating high temperature synthesis of the pressed shapes, wherein, the average granularity of TiC granules is 2-8 mu m. The simple self-propagating high temperature synthesis method is adopted to lead the Cu powder, Ti powder and C powder to react in situ and synthesize, so as to prepare the TiC dispersion strengthening copper-based composite material, and has the advantages of simple process, low production cost, high product output, high quality and the like.

Description

technical field [0001] The invention belongs to the technical field of metal-based composite material preparation, and provides a method for preparing titanium carbide dispersion-strengthened copper-based composite material by self-propagating high-temperature synthesis. Production and preparation of high conductivity copper matrix composites. Background technique [0002] High-strength and high-conductivity copper alloy is a kind of structural functional material with excellent comprehensive physical properties and mechanical properties. It plays an irreplaceable role in many industrial fields and is widely used in lead frame ports of integrated circuits, various spot welding and seam welding machines. Electrodes, high-power asynchronous traction motor rotors, electrified railway contact wires, thermonuclear experimental reactor (ITER) divertor vertical target heat sinks and other fields of electric power, electrical engineering, and machinery manufacturing. However, the s...

Claims

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Application Information

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IPC IPC(8): C22C1/05C22C32/00C22C9/00C22C29/10
Inventor 李才巨朱心昆周芸陶静梅陈铁力
Owner KUNMING UNIV OF SCI & TECH
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