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A kind of preparation method of titanium diboride copper-based spherical composite material powder

A composite material, titanium diboride technology, which is applied in the field of preparation of titanium diboride copper-based spherical composite material powder, can solve the problems of composite material powder lack, structure segregation and poor performance uniformity, etc., and achieve the suppression of specific gravity segregation Effect

Active Publication Date: 2022-04-12
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing titanium diboride copper-based spherical composite powder, which solves the problem of preparing large-size TiB by the current liquid forming method. 2 / Cu composites faced with poor structure segregation and performance uniformity, and TiB 2 / Cu composite material powder metallurgy forming process part of the missing composite powder

Method used

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  • A kind of preparation method of titanium diboride copper-based spherical composite material powder
  • A kind of preparation method of titanium diboride copper-based spherical composite material powder
  • A kind of preparation method of titanium diboride copper-based spherical composite material powder

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Embodiment 1

[0031] Step 1: TiB 2 / Cu spherical composite powder preparation, calculate the content of Ti and B elements required for the master alloy with the Ti:B molar ratio of 1:2, and react TiB in situ 2 The proportion of copper-boron and copper-titanium master alloys was designed with the amount of reinforcement formed at 3wt.%, and then the two master alloys were weighed with equal mass, the surface of the master alloy was polished with sandpaper and cleaned with alcohol, and dried for use.

[0032] Step 2: Using the attached figure 1 In the self-designed separate graphite mixer shown, firstly, the two types of intermediate alloys are stacked on both sides of the middle baffle plate of the melting crucible of the mixer, and then the graphite guide tube with an inner diameter of 4mm is installed in the positioning hole at the bottom of the mixing funnel. Put the mixer as a whole inside the smelting coil, and then use the electric plugging mechanism to lower the temperature measuring...

Embodiment 2

[0035] Step 1: TiB 2 / Cu spherical composite powder preparation, calculate the content of Ti and B elements required for the master alloy with the Ti:B molar ratio of 1:2, and react TiB in situ 2 The proportion of copper-boron and copper-titanium master alloys was designed with the amount of reinforcement formed at 4wt.%, and then the two master alloys were weighed with equal mass, the surface of the master alloy was polished with sandpaper and cleaned with alcohol, and dried before use.

[0036] Step 2: Using the attached figure 1 In the self-designed separate graphite mixer shown, first, two types of intermediate alloys are stacked on both sides of the middle baffle plate of the melting crucible of the mixer, and then a graphite guide tube with an inner diameter of 5 mm is installed in the positioning hole at the bottom of the mixing funnel. Put the mixer as a whole inside the smelting coil, and then use the electric plugging mechanism to lower the temperature measuring the...

Embodiment 3

[0039] Step 1: TiB 2 / Cu spherical composite powder preparation, calculate the content of Ti and B elements required for the master alloy with the Ti:B molar ratio of 1:2, and react TiB in situ 2 The ratio of copper-boron and copper-titanium master alloys was designed with the amount of reinforcement formed at 2wt.%, and then the two master alloys were weighed with equal mass, the surface of the master alloy was polished with sandpaper and cleaned with alcohol, and dried before use.

[0040] Step 2: Adopt figure 1 In the self-designed separate graphite mixer shown, first, the two types of intermediate alloys are stacked on both sides of the middle baffle of the melting crucible of the mixer, and then a graphite guide tube with an inner diameter of 3.5mm is installed in the positioning hole at the bottom of the mixing funnel , and put the mixer as a whole inside the smelting coil, and then use the electric plugging mechanism to lower the temperature measuring thermocouple and ...

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Abstract

The invention discloses a method for preparing titanium diboride copper-based spherical composite material powder, which is specifically carried out according to the following steps: Step 1: according to the in-situ reaction of TiB 2 The proportion of copper-boron and copper-titanium master alloys is designed for the amount of reinforcement produced, and the two types of master alloys are smelted in separate regions by using a separate graphite mixer. Step 2: By adjusting parameters such as smelting parameters, draft tube layout, atomizing gas pressure, etc., a supersonic ring-hole atomizer is used to atomize the composite material melt, and finally obtain a spherical TiB 2 / Cu composite powder. The invention can atomize the large-volume composite material melt into fine composite material powder, and can effectively suppress TiB in the powder micro-region 2 The specific gravity segregation between the particles and the Cu matrix, and the uniform distribution of the reinforcement particles can be obtained, which can provide high-quality raw materials for the preparation of large-scale, complex-structure conductive copper-based material parts by powder metallurgy, and provide large-scale copper-based composite materials. Industrialization provides new ideas.

Description

technical field [0001] The invention belongs to the technical field of particle-reinforced metal matrix composite material powder, and in particular relates to a preparation method of titanium diboride copper-based spherical composite material powder. Background technique [0002] With the upgrading of key core components of important equipment in the fields of UHV power transmission, rail transit, integrated circuits, and military industry in my country, the performance requirements for copper-based materials such as strength, conductivity, wear resistance, and high-temperature stability are becoming more stringent. Although the traditional precipitation-strengthened copper alloy can improve the strength and conductivity matching limit to a certain extent, it is difficult to meet the requirements of high strength, high conductivity, wear resistance and arc ablation resistance under extreme service conditions. An important way and development trend to realize high-strength a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C1/03C22C9/00C22C32/00B22F9/08
CPCC22C1/1042C22C9/00C22C32/0073B22F9/082
Inventor 梁淑华石浩赵阳高怀宝姜伊辉曹飞邹军涛
Owner XIAN UNIV OF TECH