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a ti 2 Alc reinforced copper matrix composite material preparation method

A technology of copper-based composite materials and pure copper, applied in the direction of carbon oxides/sulfur carbides, carbides, etc., can solve the problems of poor electrical conductivity, high brittleness of copper-based composite materials, high friction coefficient, etc., and achieve the goal of improving uniformity Effect

Active Publication Date: 2020-07-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a Ti 2 Preparation method of AlC reinforced copper matrix composite material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1. Put Ti powder, Al powder and Al 4 C 3 The powder is mixed on the V-type mixer according to the atomic ratio of 6:1:1, the mixing time is 2 hours, and the speed is 300r / min. Put the mixed powder into a mold and press on a 400T press with a pressing pressure of 200 MPa, keep the pressure for 30 minutes, and automatically reduce the pressure to prepare a prefabricated block body.

[0015] 2. Put the prefabricated block body prepared in step 2 into a vacuum sintering furnace for multi-stage sintering, keep it at 800°C for 2h, heat it up to 1300°C at a heating rate of 20°C / min, keep it at 7h, and cool to room temperature with the furnace , prepared into porous Ti 2 AlC body.

[0016] 3. The porous Ti 2 The AlC green body and 500g copper block were placed in a graphite mold, and infiltration treatment was carried out in a hot-press sintering furnace with argon protection and a temperature of 1150°C. The treatment time was 6 hours and the pressure was 600MPa.

Embodiment 2

[0018] 1. Put Ti powder, Al powder and Al 4 C 3 The powder is mixed on the V-type mixer according to the atomic ratio of 6:1:1, the mixing time is 2 hours, and the speed is 300r / min. Put the mixed powder into a mold and press on a 400T press with a pressing pressure of 300 MPa. Press on the press, keep the pressure for 26 minutes, and automatically reduce the pressure to prepare a prefabricated block body.

[0019] 2. Put the prepared prefabricated block body into a vacuum sintering furnace for multi-stage sintering, keep it at 850°C for 1.5h, heat it up to 1350°C at a heating rate of 15°C / min, keep it at 6h, and cool it to room temperature with the furnace to prepare Porous Ti 2 AlC body.

[0020] 3. The porous Ti in step 2 2 The AlC green body and 500g copper block were placed in a graphite mold, and infiltration treatment was carried out in a hot-press sintering furnace with argon protection and a temperature of 1175°C. The treatment time was 5 hours and the pressure wa...

Embodiment 3

[0022] 1. Put Ti powder, Al powder and Al 4 C 3 The powder is mixed on the V-type mixer according to the atomic ratio of 6:1:1, the mixing time is 2 hours, and the speed is 300r / min. 2. Put the mixed powder into a mold and press it on a 400T press with a pressing pressure of 500 MPa, keep the pressure for 20 minutes, and automatically reduce the pressure to prepare a prefabricated block body.

[0023] 2. Put the prepared prefabricated block body into a vacuum sintering furnace for multi-stage sintering, hold at 900°C for 1 hour, heat up to 1400°C at a heating rate of 10°C / min, hold for 5 hours, and cool to room temperature with the furnace to prepare porous Ti 2 AlC body.

[0024] 3. The porous Ti in step 2 2 The AlC green body and 500g copper block were placed in a graphite mold, and infiltration treatment was carried out in a hot-press sintering furnace with argon protection and a temperature of 1200°C. The treatment time was 4 hours and the pressure was 500MPa.

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Abstract

The invention discloses a preparation method of a Ti2AlC reinforced copper-based composite material, and relates to a copper-based composite material and a preparation method thereof. The defects thata copper-based composite material is high in fragility, poor in electrical conductivity and high in friction coefficient are solved. The preparation method of the Ti2AlC reinforced copper-based composite material mainly comprises the two steps that 1, a porous Ti2AlC green body is prepared by adopting a powder metallurgy method; and 2, a pure copper fusant is extruded into the porous Ti2AlC greenbody by adopting an infiltration technique, and the Ti2AlC reinforced copper-based composite material is prepared. The preparation method can be used for preparing the copper-based composite materialhaving the excellent electrical conductivity and the self-lubricating effect.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a Ti 2 Preparation method of AlC reinforced copper matrix composites. Background technique [0002] Copper-based composite materials have broad application prospects in the fields of electrode materials, brush materials, contact materials, and pantograph slide materials for high-speed rail due to their good electrical conductivity. However, due to the shortcomings of conventional copper-based composites such as non-conductivity and high friction coefficient of the added ceramic particles, the addition of ceramic volume fraction is seriously affected, which further affects the use and performance improvement of copper-based composites. In addition, the addition of ceramic particles leads to an increase in the brittleness of copper matrix composites, which is not conducive to subsequent processing and molding. Ti2AlC material has excellent properties such as high temper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C9/00C22C32/00C01B32/907
CPCC01B32/907C22C1/1005C22C1/1036C22C9/00C22C32/0052
Inventor 张树志侯赵平张长江林鹏韩建超徐萌宋志文
Owner TAIYUAN UNIV OF TECH