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TiC/Ti5Si3 enhanced copper-based composite and preparing method thereof

A copper-based composite material and composite material technology, applied in the field of metal materials, can solve the problems of complex preparation process, high cost, and low production efficiency, and achieve the effect of simple and stable preparation process, fine particles, and uniform distribution

Active Publication Date: 2020-08-04
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses SiC as a carbon source, which is costly and limited by the ratio of silicon to carbon in SiC, and Ti in the prepared composite material 5 Si 3 And the relative content of TiC is difficult to adjust flexibly. At the same time, this method needs to mix and ball-mill SiC powder and graphite powder for a long time. The process is complicated and the production efficiency is low.
[0005] The performance of copper-based composite materials can be effectively improved by the method of second-phase compounding, but the preparation process of the prior art is relatively complicated, the cost is high, and the morphology, size, and dispersion of the second phase are difficult to control, and the combination with the copper matrix not strong

Method used

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  • TiC/Ti5Si3 enhanced copper-based composite and preparing method thereof
  • TiC/Ti5Si3 enhanced copper-based composite and preparing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Raw material preparation: ready to prepare TiC / Ti 5 Si 3 The raw materials needed to strengthen the copper-based composite material are weighed by mass percentage, including 89.21% of pure copper, 1.07% of crystalline silicon, 0.43% of Si powder, 8.29% of titanium powder and 1% of graphite powder.

[0025] (2) Preparation of Ti-Si-graphite mixed powder: fully mix Si powder, Ti powder and graphite powder in a mixer for 0.5 hour to obtain Ti-Si-graphite mixed powder.

[0026] (3) Powder briquetting and sintering: cold press the Ti-Si-graphite mixed powder obtained in (2) into a prefabricated block of a certain shape under a pressure of 30MPa, and place the prefabricated block in a vacuum sintering furnace at 650°C Sinter for 2 hours, or sinter for 2 hours in a vacuum hot pressing sintering furnace at 650° C. under a pressure of 30 MPa to obtain a Ti-Si-graphite prefabricated block.

[0027] (4)TiC / Ti 5 Si 3 Preparation of reinforced copper-based composite material...

Embodiment 2

[0030] (1) Raw material preparation: ready to prepare TiC / Ti 5 Si 3 The raw materials needed to strengthen the copper-based composite material are weighed by mass percentage, 88.64% of pure copper, 0.72% of crystalline silicon, 0.28% of Si powder, 8.86% of titanium powder and 1.5% of graphite powder.

[0031] (2) Preparation of Ti-Si-graphite mixed powder: fully mix Si powder, Ti powder and graphite powder in a mixer for 1 hour to obtain Ti-Si-graphite mixed powder.

[0032] (3) Powder briquetting and sintering: cold press the Ti-Si-graphite mixed powder obtained in (2) into a prefabricated block of a certain shape under a pressure of 50MPa, and place the prefabricated block in a vacuum sintering furnace at 750°C Sinter for 3 hours, or sinter for 3 hours in a vacuum hot pressing sintering furnace at 750° C. under a pressure of 50 MPa to obtain a Ti-Si-graphite prefabricated block.

[0033] (4)TiC / Ti 5 Si 3 Preparation of reinforced copper-based composite materials: After t...

Embodiment 3

[0036] (1) Raw material preparation: ready to prepare TiC / Ti 5 Si 3 The raw materials needed to strengthen the copper-based composite material are weighed by mass percentage, including 82.28% of pure copper, 1.52% of crystalline silicon, 0.48% of Si powder, 13.72% of titanium powder and 2% of carbon black.

[0037] (2) Preparation of Cu-Ti-Si-carbon black mixed powder: fully mix Si powder, Ti powder and graphite powder in a mixer for 3 hours to obtain Ti-Si-carbon black mixed powder.

[0038] (3) Powder briquetting and sintering: The Cu-Ti-Si-carbon black mixed powder obtained in (2) is cold-pressed into a prefabricated block of a certain shape under a pressure of 70 MPa, and the prefabricated block is placed in a vacuum of 800 ° C Sintering in a sintering furnace for 4 hours, or sintering in a vacuum hot-pressing sintering furnace at 800° C. under a pressure of 70 MPa for 4 hours to obtain a Cu-Ti-Si-carbon black prefabricated block.

[0039] (4)TiC / Ti 5 Si 3 Preparation ...

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Abstract

The invention belongs to the field of metal materials and particularly relates to a TiC / Ti5Si3 enhanced copper-based composite and a preparing method thereof. The preparing method includes the steps of raw material preparing, preparing of carbon elementary substance mixed powder of Ti, Si, graphite and the like, powder briquetting and sintering, preparing of the TiC / Ti5Si3 enhanced copper-based composite and other steps. By means of the TiC / Ti5Si3 enhanced copper-based composite and the preparing method thereof, carbon elementary substances such as graphite powder or carbon black or carbon nano tubes or graphene are adopted as the carbon source, and the carbon elementary substances in melt and titanium are subjected to a spontaneous reaction to synthesize TiC so as to prepare the TiC / Ti5Si3 enhanced copper-based composite. The preparing technology is simple, the cost is low, and the efficiency is high. TiC particles are distributed in Ti5Si3, interface bonding between an enhancement body and a base body is good, and particle and fiber compounding enhancement is achieved. Compactness of the prepared composite is high, electric conduction performance and heat conduction performance are good, strength, hardness and wear resistance are high, meanwhile, good plasticity and toughness are achieved, and the TiC / Ti5Si3 enhanced copper-based composite is suitable for industrial production and application.

Description

Technical field: [0001] The invention belongs to the field of metal materials, in particular to a TiC / Ti 5 Si 3 Reinforced copper matrix composite material and preparation method thereof. Background technique: [0002] Copper is one of the earliest metals discovered by humans, and it is also one of the most practical pure metals. It has good ductility, its electrical conductivity is second only to silver, and its thermal conductivity is second only to gold and silver. However, copper has a face-centered cubic lattice, no allotropic transformation, high plasticity and low strength, so that it often fails due to insufficient strength in practical applications, which greatly limits the application of copper. To solve this problem, alloying is one of the most commonly used methods. Copper alloy not only has excellent thermal conductivity, electrical conductivity, corrosion resistance, jointability, machinability and other comprehensive physical and mechanical properties, but ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C9/00C22C32/00
CPCC22C1/05C22C9/00C22C32/0047
Inventor 丁海民王强柳青范孝良王进峰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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