Single crystal copper-silver composite conductor and preparation method thereof

Abstract

The invention discloses a preparation method of a single crystal copper-silver composite conductor. The method comprises the following steps: (1) preparing a single crystal copper wire rod; (2) silvering pretreating the surface of the single crystal copper wire rod; (3) preparing a single crystal copper-silver composite filament; and (4) preparing the single crystal copper-silver composite conductor. The single crystal copper-silver composite conductor prepared by the method comprises a copper matrix and a silvered layer out of the copper matrix, the cross section of the single crystal copper-silver composite conductor is a round or a polygon, the diameter at the maximum part of the cross section is 0.008mm-0.5mm, and the thickness of the silvered layer is 0.1 micron-100 microns. The composite conductor adopting the above technical scheme has the advantages that the scattering, refraction and reflection phenomena of the electron are reduced by using the single crystal copper wire rod as the matrix, the attenuation and the distortion of the signal are effectively prevented, the conducting performance and the signal transmission performance of the conductor are improved, and the conductor has high conductivity and signal fidelity.

Description

technical field [0001] The invention belongs to the field of wires and cables and electronic materials, and in particular relates to a composite wire and a preparation method thereof. Background technique [0002] In 3C electronic products (Computer, Communication, Consumer Electronics), medical equipment, audio, satellite, aerospace, weaponry and various fields involving electrical conduction and signal transmission, on the one hand, due to the development trend of miniaturization of electronic products, The volume of products is getting smaller and smaller. On the other hand, for medical equipment, aerospace and satellite fields, due to the limitation of space and weight, it is necessary to use ultra-thin cables to conduct electricity and transmit signals. Conductivity, flexibility and fidelity of the signal are required; in addition, in medical equipment, aerospace and weaponry, the cables will swing and even twist under high frequency vibration, which requires the cables...

AI Technical Summary

Problems solved by technology

[0002] In 3C electronic products (Computer, Communication, Consumer Electronics), medical equipment, audio, satellite, aerospace, weaponry and various fields involving electrical conduction and signal transmission, on the one hand, due to the development trend of miniaturization of electronic products, The volume of products is getting smaller and smaller. On the other hand, for medical equipment, aerospace and satellite fields, due to the limitation of space and weight, it is necessary to use ultra-thin cables to conduct electricity and transmit signals. Conductivity, flexibility and fidelity of the signal are required; in addition, in medical equipment, aerospace and weaponry, the cables will swing and even twist under high frequency vibration, which requires the cables to be extremely flexible The conductivity and flexibility of traditional copper wires are difficult to meet the requirements

The conductivity and flexibility of silver are higher than that of copper. In the fields of aerospace, weaponry, and high-end electronic materials, pure silver cables are used to ensure performance, but pure silver wires are expensive, which affects their popularization and application.

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