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Preparation method of gradient structure copper-based composite electric contact material

An electrical contact material, copper-based composite technology, which is used in equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, circuits, etc., can solve the problem of limited surface hardness of titanium bronze materials The application range of high-conductivity and high-elasticity components can achieve the effect of reducing friction coefficient, improving comprehensive performance and high hardness

Active Publication Date: 2021-06-18
YANTAI WANLONG VACUUM METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing methods for preparing titanium-copper alloy wires, titanium-copper alloy rods, and titanium-copper alloy strips for conductive elastic components describe the use of different raw materials to obtain high-conductivity and high-elastic components through vacuum smelting, plastic deformation processing and subsequent heat treatment processes The surface hardness of titanium bronze materials prepared by this type of method is limited and does not have self-lubricating properties, which limits its application range as high-conductivity and high-elastic components

Method used

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  • Preparation method of gradient structure copper-based composite electric contact material
  • Preparation method of gradient structure copper-based composite electric contact material
  • Preparation method of gradient structure copper-based composite electric contact material

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A method for preparing a gradient structure copper-based composite electrical contact material: the step of selecting the copper alloy is QTI3.5 substrate (Ti3.5-4.0 wt%, the sum of the total impurities ≤ 0.5%, the margin is Cu), QTI3.5 matrix conducts mechanical polishing treatment and washing 10 minutes in acetone solution, and is easily washed in anhydrous ethanol solution for 10 min, and the pretreatment QTI3.5 substrate is placed on top of the closed cavity for mechanical polishing treatment, and the bottom is placed oxidation The number of zirconium balls is 180, the steel ball is 4 mm, the treatment time is 30 min, the vibration frequency is 45 Hz, and the mechanically polished QTI3.5 matrix is ​​placed in acetone solution to ultrasonically cleaning 10 min, and cleaning 5S in a mixed acid solution, mix Acid solution quality ratio H 2 SO 4 : Hno 3 : Ultra-pure water is 5: 3: 2; the handled QTI3.5 matrix is ​​sandwiched on the reaction magnetopolymer sputter system sam...

Embodiment 2

[0031] A method for preparing a gradient structure copper-based composite electrical contact material, using the same raw materials and preparation processes in Example 1, the industrial pure titanium TA1 target radio power supply and the Ni-Cu-RE target radio power supply Changed to 100 min; take a cross-sectional analysis of gradient composite coating, its thickness of 3 μm.

[0032] With the multi-function friction wear, the friction conditions are dry friction, the wear method is a one-way circulation slide, and the friction pair is 4mm G10 steel ball. Under the 5N load, the line speed is 10mm / s, the total motion distance is 18m, and the average friction is measured. The coefficient is 0.37, the wear rate is 0.42mm 3 / (N · m).

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Abstract

The invention discloses a preparation method of a gradient structure copper-based composite electric contact material. The preparation method comprises the steps of pretreatment of a substrate, sputtering copper plating treatment, reaction co-sputtering treatment and the like. A Cu / TiN / Ni-Cu-Re composite coating is prepared on the surface of QTi3.5 through a magnetron sputtering method, the TiN coating with good chemical stability and conductivity is combined with Ni-Cu-Re particles with good self-lubricating performance to obtain the wear-resistant composite coating with the controllable thickness and good conductivity while reserving he excellent performance of a QTi3.5 matrix. And by preparing the pure copper transition coating, the interface stress between different coatings is effectively relieved, the binding force between the coating and the matrix and the binding force between the different coatings are improved, the electric contact material with good comprehensive performance is obtained, and therefore the service life of the electric contact material is prolonged.

Description

Technical field [0001] The present invention relates to a gradient composite coating material, and more particularly to a method of preparing a gradient structure copper-based composite electrical contact material. Background technique [0002] Electrical contact material is often used in interaction with electricity, heat, strength, and different environments. Due to different contact loads, the contact form is different, the use environment is different, and the performance of electrical contact failure is prone to major accidents or disasters. Use reliability and high requirements. [0003] Titanium bronze is a copper alloy made of pure copper to add elementary titanium or the like, which has high strength, high hardness, excellent wear resistance, fatigue resistance, corrosion resistance, and heat resistance. And titanium bronze also has the advantage of no spark, non-magnetic, high-elastic limit, which can be used to make various elements of high strength, high elasticity an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/00H01H11/04
CPCH01B13/00H01B13/0026H01H11/048
Inventor 王鲁宁汤德林王肇飞崔华春宋涛林才曲德猛
Owner YANTAI WANLONG VACUUM METALLURGY
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