Method for preparing smelting cast-in-site synthetic alpha-Al2O3 granule reinforced copper base composite material

Abstract

The present invention relates to fusion casting-in-site synthesis process of preparing alpha-Al2O3 grain reinforced copper base composite material, and belongs to the field of metal base composite material. The technological process includes: compounding materials based on reaction formula 2Al+3CuO-->3Cu+Al2O3; mixing materials Al and CuO in a material mixing machine and forming; heating matrix material Cu of over 99.0 % purity in MF inducing furnace to the temperature of 50-150 deg.c over the smelting point of Cu; pressing the fabricated blocks on 1-10 wt% of the melt into the melt and maintaining; casting to obtain in-site reacted alpha-Al2O3 grain reinforced copper base composite material. The advantages include shortened technological process, low manufacture cost and wide application as high strength and high conductivity electronic and electric material.

Description

technical field

[0001] The invention belongs to the field of metal matrix composite materials, and in particular provides a melting and casting-in-situ synthesis of α-Al 2 o 3 The preparation method of particle-reinforced copper-based composite material can synchronize the smelting of the matrix alloy and the generation of the reinforcing phase, significantly shorten the composite material preparation process, and reduce the manufacturing cost of the copper-based composite material, and can be widely used in industries requiring high strength and high conductivity. fields of electronics and electrotechnical technology. Background technique

[0002] Since the mid-1980s, driven by application and market demand, the research focus of metal matrix composites has shifted from continuous fiber-reinforced metal matrix composites to discontinuous fiber reinforcement with lower cost but broad industrial application prospects. metal matrix composites. In recent years, in situ react...

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