Preparation method of copper-steel composite material with self-generated copper-rich layer on steel surface

Abstract

The invention discloses a preparation method of a copper-steel composite material with an authigenic copper-rich layer on a steel surface. The problem about the bonding between the interfaces of a former externally added coating layer and a matrix is solved by means of spontaneously generating a copper-rich coating layer on the surface of a steel matrix. The preparation method comprises the following steps: corroding the surface of copper-containing steel, removing corrosion products, and treating the surface of the copper-steel composite material. According to the method, the copper-steel composite material with the copper-rich outer layer can be obtained without the means of externally adding a coating layer; as the coating layer is spontaneously generated by the matrix, the prepared copper-steel composite material does not have the problem about the bonding between the composite interfaces and the coating layer does not usually peel off; the prepared copper-steel composite material keeps not only the excellent properties such as high strength and good toughness of steel, but also the characteristics such as corrosion resistance and conductivity of copper; besides, the appearance of the composite material is attractive.

Description

technical field [0001] The invention relates to a method for preparing a copper-clad steel composite material, in particular to a method for preparing a copper-steel composite material with a self-generated copper-rich layer on the steel surface. Background technique [0002] With the development of composite materials and related processes, a variety of copper-clad steel composite materials have been developed. This material has the advantages of strong corrosion resistance of copper, high electrical conductivity and high strength of iron. It has good comprehensive performance, low manufacturing cost and energy saving. Copper-steel composite materials have been applied in construction, railway, electric power, petrochemical and other industries, and their performance has been verified. In terms of practicability, safety, and economy, they all have very good application prospects. [0003] At present, the methods for producing copper-clad steel wire mainly include electropl...

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Problems solved by technology

The production of copper-clad steel wire rods by this method has the advantages of saving manpower, high degree of automation, and high production efficiency, but the process parameters of heat preservation, solidification, and traction must match, and the production process is difficult to control.

[0008] To sum up, at present, all copper-steel composite materials are coated with copper on the surface of steel through various composite processes. Therefore, various defects such as inclusions, bubbles, and gaps often appear between the matrix and the cladding layer, which affect the composite. Effect and Binding Strength

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