A kind of al2o3-tic copper-based composite material and preparation method thereof

A copper-based composite material, al2o3-tic technology, applied in the field of copper-based composite materials, can solve the problem of insufficient resistance to high temperature, high pressure, large arc load, harsh application environment of current density in contact area, and reinforced copper-based composite materials that cannot meet special requirements. Performance and service life and other issues, to achieve good anti-arc erosion performance, easy control of process conditions, and low production costs

Active Publication Date: 2018-11-09
JIANGXI UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, Al prepared by the existing mechanical alloying method and powder internal oxidation method 2 o 3 Reinforced copper-based composite materials cannot meet the requirements of special performance and life, which is reflected in the increasingly harsh application environments such as the increase in energy transmission density of contact materials and the miniaturization of control components but the contact area decreases and the current density increases. The arc corrosion resistance puts forward higher requirements, and the existing dispersion strengthened copper matrix composites are not enough in terms of resistance to high temperature, high pressure, and large arc load.

Method used

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  • A kind of al2o3-tic copper-based composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In this embodiment, Al powder, TiO 2 The sum of the percentages by weight of powder and C powder is 1%;

[0042] The average particle size is 300 mesh Al powder 0.084g, 300 mesh Cu powder 29.7g, 300 mesh rutile ultrafine TiO 2 0.188g of powder and 0.028g of graphite powder with a particle size of 800 mesh were manually ground in a mortar for 5 minutes, then put into a ball mill pot and wet ball milled on a planetary ball mill for 10 hours;

[0043] Then dry;

[0044] Then put the dried product into a graphite mold and sinter it in an SPS spark plasma sintering furnace. Cool to get Al 2 o 3 -TiC copper-based composite material.

[0045] The sintered product is Cu, Al by XRD phase analysis 2 o 3 , TiC three-phase, prepared Al 2 o 3 - The Vickers hardness of the TiC copper matrix composite is 170HV, the tensile strength is 551MPa, the elongation is 20%, and the electrical conductivity is 87% IACS.

Embodiment 2

[0047] In this embodiment, Al powder, TiO 2 The sum of the percentages by weight of powder and C powder is 2%;

[0048] The average particle size is 300 mesh Al powder 0.169g, 300 mesh Cu powder 29.4g, 300 mesh rutile ultrafine TiO 2 0.375g of powder and 0.056g of graphite powder with a particle size of 700 mesh were manually ground in a mortar for 5 minutes, then put into a ball mill pot and wet ball milled on a planetary ball mill for 8 hours;

[0049] Then dry;

[0050] Then put the dry product into a graphite mold and sinter it in an SPS discharge plasma sintering furnace. Cool to get Al 2 o 3 -TiC copper-based composite material.

[0051] The sintered product is Cu, Al by XRD phase analysis 2 o 3 , TiC three-phase, prepared Al 2 o 3 -TiC copper matrix composite material has a Vickers hardness of 172HV, a tensile strength of 558MPa, an elongation of 18%, and an electrical conductivity of 85% IACS.

Embodiment 3

[0053] In this embodiment, Al powder, TiO 2 The sum of the percentages by weight of powder and C powder is 3%;

[0054] The average particle size is 300 mesh Al powder 0.253g, 300 mesh Cu powder 29.1g, 400 mesh rutile ultrafine TiO 2 0.563g of powder and 0.084g of graphite powder with a particle size of 700 mesh were manually ground in a mortar for 5 minutes, then put into a ball mill pot and wet ball milled on a planetary ball mill for 12 hours;

[0055] Then dry;

[0056] Then put the dried product into a graphite mold and sinter it in a SPS spark plasma sintering furnace. Cool to get Al 2 o 3 -TiC copper-based composite material.

[0057] The sintered product is Cu, Al by XRD phase analysis 2 o 3 , TiC three-phase, prepared Al 2 o 3 -TiC copper matrix composite material has a Vickers hardness of 176HV, a tensile strength of 563MPa, an elongation of 17%, and an electrical conductivity of 83% IACS.

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Abstract

The invention discloses a Al2O3-TiC copper-based composite which is prepared by Cu powder, Al powder, TiO2 powder and C powder through an in-situ preparation method, wherein a ratio of a weight percent of the Al powder to a weight percent of the TiO2 powder to a weight percent of the C powder is equal to (8-10):(18-22):(2-5), and a sum of the weight percent of the Al powder, the weight percent of the TiO2 powder and the weight percent of the C powder is 1-10%. The prepared Al2O3-TiC copper-based composite comprises three phases, namely, Cu, Al2O3 and TiC and the particle sizes of Al2O3 and TiC reinforcement body particles are less than 100 nanometers. The Al2O3-TiC copper-based composite has the advantages of high strength, high hardness, good arcing erosion resistance, high wear resistance and high conductivity, and can meet the industrial development requirements at the present stage. The invention further discloses a preparation method of the Al2O3-TiC copper-based composite.

Description

technical field [0001] The invention relates to the technical field of copper-based composite materials, in particular to an Al 2 o 3 -TiC copper-based composite material and preparation method thereof. Background technique [0002] Among metal materials, copper and its alloys have good ductility and casting properties, which are conducive to plastic processing and easy to form; copper has excellent electrical and thermal conductivity, and has considerable resistance to harsh environments such as humidity, acid and alkali, etc. Therefore, it is widely used in contact switches, generators, transformers, solar heating devices and many other fields, and is one of the most important metal materials. [0003] However, the wear resistance and mechanical strength of copper are poor, which limits the application of copper in some fields. In the face of these difficulties, many researchers mainly use alloying methods and composite materials to improve the comprehensive performance ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05B22F3/105
CPCB22F3/105B22F2003/1051B22F2998/10C22C1/058C22C9/00C22C32/0005B22F2009/043
Inventor 肖翔鹏田原晨陈金水梁琦明胡海军李学帅孙克斌贺玲慧
Owner JIANGXI UNIV OF SCI & TECH
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