Low-density superfine silver-coated aluminum composite flexible wire and preparation method thereof

A silver-clad aluminum, low-density technology, applied in the direction of cable/conductor manufacturing, equipment for manufacturing conductive/semiconductive layers, root rod/rod/wire/strip conductor, etc., can solve the problem of damage to material processing performance and physical properties , thick wire diameter, high density, etc., to achieve the effect of easy control of film thickness, good adhesion, and uniform and dense silver plating

Inactive Publication Date: 2019-09-24
SINO PLATINUM METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a low-density ultra-fine silver-clad aluminum composite flexible wire and its preparation method. The silver-clad aluminum composite flexible wire has a dense coating and good adhesion, and the thickness of the coating is easy to control. Aluminum composite wire has high density, relatively thick wire diameter, and the formation of compounds at the interface during the annealing process destroys the processing performance and physical properties of the material.

Method used

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  • Low-density superfine silver-coated aluminum composite flexible wire and preparation method thereof
  • Low-density superfine silver-coated aluminum composite flexible wire and preparation method thereof
  • Low-density superfine silver-coated aluminum composite flexible wire and preparation method thereof

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Embodiment 1

[0041] The outer diameter is Φ10μm, the inner diameter is Φ8.4μm, the cladding thickness is 0.8μm (the cladding thickness ratio is 8%), and the density is 5g / cm 3 Preparation of silver-clad aluminum composite soft wire:

[0042] The silver tube target is used as the cathode, the pure aluminum core material Φ15μm with continuous wiring (40mm / min) is used as the anode, and the vacuum degree is 0.6×10 -3 Pa, filled with high-purity argon gas 0.6MPa, working target current 5A, the average thickness of the film is controlled at 1.54μm, the silver-clad aluminum composite wire billet is prepared, and the composite wire billet is deformed by 3-4% per pass, the total deformation 70%, the uniform and dense silver composite layer is prepared with an outer diameter of Φ10μm, an inner diameter of Φ8.4μm, a layer thickness of 0.8μm (layer thickness ratio of 8%), and a density of 5g / cm 3 Silver-clad aluminum composite soft wire.

Embodiment 2

[0044] The outer diameter is Φ30μm, the inner diameter is Φ27.3μm, the thickness of the clad layer is 1.35μm (the thickness ratio of the clad layer is 4.5%), and the density is 4g / cm 3 Preparation of silver-clad aluminum composite soft wire:

[0045] The silver tube target is used as the cathode, the pure aluminum core material Φ45μm with continuous wiring (50mm / min) is used as the anode, and the vacuum degree is 0.8×10 -3 Pa, filled with high-purity argon gas 0.5MPa, working target current 4A, the average thickness of the film is controlled at 2.45μm, and the silver-clad aluminum composite wire billet is prepared, and the composite wire billet is deformed by 4-5% per pass, and the total deformation 64%, the uniform and dense silver composite layer is prepared with an outer diameter of Φ30μm, an inner diameter of Φ27.3μm, a layer thickness of 1.35μm (layer thickness ratio of 4.5%), and a density of 4g / cm 3 Silver-clad aluminum composite soft wire.

[0046] From figure 2 It...

Embodiment 3

[0048] Silver-clad aluminum composite soft wire, the outer diameter is Φ50μm, the inner diameter is Φ49μm, the thickness of the cladding layer is 0.5μm (thickness ratio of the cladding layer is 1%), and the density is 3g / cm 3 Preparation of silver-clad aluminum composite soft wire:

[0049] The silver tube target is used as the cathode, the pure aluminum core wire Φ75μm of continuous wiring (60mm / min) is used as the anode, and the vacuum degree is 1×10 -3 Pa, filled with high-purity argon gas 0.3MPa, working target current 3A, the average thickness of the film is controlled at 0.92μm, the silver-clad aluminum composite wire billet is prepared, and the composite wire billet is deformed by 5-6% per pass, the total deformation 58%, the uniform and dense silver composite layer is prepared with an outer diameter of Φ50μm, an inner diameter of Φ49μm, a layer thickness of 0.5μm (layer thickness ratio of 1%), and a density of 3g / cm 3 Silver-clad aluminum composite soft wire.

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Abstract

The invention discloses a low-density superfine silver-coated aluminum composite flexible wire and a preparation method thereof, and belongs to a composite material and preparation thereof. According to the silver-coated aluminum composite flexible wire, high-purity silver is used as a coating layer, pure aluminum is used as a core material, the outer diameter of the flexible wire is 10-50 microns, the inner diameter of the flexible wire is 8.4-49.0 microns, the thickness of a composite layer is 0.1-4.0 microns (the thickness ratio of the composite layer is 1%-8%), and the density of the composite layer is 3 g/cm<3>-5 g/cm<3>. The preparation method of the silver-coated aluminum composite flexible wire comprises the following steps: 1, preparing a silver tube target material; 2, preparing a pure aluminum core material; 3, preparing a silver-coated aluminum composite wire blank; 4, performing multi-pass drawing on the composite wire blank. The magnetron sputtering vacuum coating technology is adopted for preparing the silver-coated aluminum composite wire blank, a silver coating is uniform and compact and good in adhesive force, the thickness of the coating is easy to control, and the composite wire blank is directly drawn into a flexible wire with an ultrafine wire diameter and low density without annealing.

Description

technical field [0001] The invention relates to a low-density ultra-fine silver-clad aluminum composite flexible wire and a preparation method thereof, which belongs to the field of composite materials and is suitable for low-density requirements (≤5g / cm 3 ), flexible wires for inertial navigation gyroscopes in the fields of navigation, aviation, aerospace and other fields that require very thin wire diameters (≤20 microns). Background technique [0002] Inertial navigation gyroscopes are widely used in navigation systems such as navigation, aviation, and aerospace. Soft wires play the role of transmitting energy and signals and are key components of gyroscopes. The size, conductivity, density, shape and later molding of the soft wire directly affect the accuracy, stability and reliability of the gyroscope. [0003] The design requirements of flexible wires: small size, high conductivity, low density, low elastic modulus, good processability and weldability, small mechanica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/02H01B13/00C23C14/35C23C14/16
CPCC23C14/165C23C14/35H01B5/02H01B13/00H01B13/0006H01B13/0026
Inventor 尹俊美万吉高刘毅张国全武海军浦恩祥戴华张文林马丽华
Owner SINO PLATINUM METALS CO LTD
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