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

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 ...

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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

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