Preparation method of Cu/C composite wire rod

Abstract

The invention provides a preparation method of a Cu/C composite wire rod. The method includes the following steps that: first, an oxygen-free copper block is arranged in a vacuum induction furnace soas to be subjected to high-temperature melting; second, a high-temperature copper liquid is slowly and uniformly poured into a crucible filled with graphene oxide colloid, so as to form a cylindricalCu/C alloy ingot by means of cooling in water bath; third, the Cu/C alloy ingot is polished and is subjected to acid pickling, and the treated Cu/C alloy ingot is arranged in an oxygen-free copper sheath so as to be subjected to hot extrusion, and a Cu/C alloy rod can be obtained; and fourth, the Cu/C alloy rod is plastically drawn on the basis of a heat treatment technology, so that the Cu/C composite wire rod can be obtained finally. The microstructure distribution of the prepared Cu/C composite wire rod is uniform; the Cu/C composite wire rod has the excellent characteristics of high strength and high conductance of graphene; and the conductivity and strength of the copper wire rod are significantly improved. With the preparation method adopted, the defects of failure to realize diffusion of Cu and C, failure to realize the combination of the Cu and C, low interfacial strength and low strength of a traditional Cu/C composite material can be eliminated; a processing cycle is greatlyshortened; and cost can be saved.

Description

technical field [0001] The invention belongs to the technical field of composite wire preparation, and in particular relates to a preparation method of Cu / C composite wire. Background technique [0002] High-strength and high-conductivity copper-based composite materials are non-ferrous metal materials with excellent physical and mechanical properties. Among them, deformed copper-based composite materials are one of the research hotspots and development directions of high-strength and high-conductivity copper alloys, such as Cu / Nb-Ag, Composite materials such as Cu / Nb-Cu, Cu-Ag, Cu / Nb (winding method) and Cu-Ta have been researched and prepared one after another, and are widely used in high pulse magnetic field conductor materials, transfer switches, electrical contactors, Large current transmission wires and electromagnetic weapons, etc. With the continuous expansion of the application field of copper-based composite materials and the rapid growth of demand, the performanc...

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Problems solved by technology

[0004] At present, the preparation technologies of Cu / C composite materials mainly include powder alloy method, copper foil and graphene film superimposed rolling method, and the sleeve process method of graphene powder loaded into copper tube, etc. These processes are prepared accordingly. Cu / C composite material is used, but because it is difficult to form an interface between copper and carbon, it does not diffuse, and the interface bonding strength is weak. During the shaping process, the deformation of copper and carbon is uncoordinated and synchronized, resulting in twisting of the wire core wire , uneven force, easy to break, affecting the performance of the wire

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