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A kind of preparation method of nickel-plated graphene/silver-nickel electric contact material

A technology of electric contact material and nickel-plated graphite, which is applied in the direction of circuits, electric switches, electrical components, etc., can solve problems such as difficult to meet environmental protection requirements, and achieve the effects of easy control of the deposition process, high conductivity, and increased hardness

Active Publication Date: 2018-07-31
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the use of toxic and harmful hydrazine hydrate as a reducing agent, it is difficult to meet environmental protection requirements

Method used

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  • A kind of preparation method of nickel-plated graphene/silver-nickel electric contact material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Nickel-coated graphene was prepared by depositing metallic nickel on the surface of graphene (1-10 layers) by DC magnetron sputtering. The nickel target with a purity of 99.99% was polished with fine sandpaper before installation to remove the surface oxide film, then cleaned with acetone, dried, and pre-sputtered for 5 minutes before deposition by DC magnetron sputtering. Graphene separates, removes metal oxides and other impurities on the target surface, and ensures the purity of the nickel film deposited on the subsequent graphene surface. The sputtering parameters are as follows: the vacuum degree reaches 0.1*10 -3 At Pa, argon gas with a purity of 99.99% was introduced, the vacuum chamber pressure was 0.8Pa, the sputtering power was 120W, and the deposition time was 5min.

[0022] (2) Nickel-plated graphene: nickel powder: silver powder is loaded into the ball mill at a weight ratio of 0.1:10:89.9, using alumina ball ink tanks and agate balls, and the ball-to-...

Embodiment 2

[0026] (1) Nickel-coated graphene was prepared by depositing metallic nickel on the surface of graphene (1-10 layers) by DC magnetron sputtering. The nickel target with a purity of 99.99% was polished with fine sandpaper before installation to remove the surface oxide film, then cleaned with acetone, dried, and pre-sputtered for 5 minutes before deposition by DC magnetron sputtering. Graphene separates, removes metal oxides and other impurities on the target surface, and ensures the purity of the nickel film deposited on the subsequent graphene surface. The sputtering parameters are as follows: the vacuum degree reaches 1.0*10 -3 At Pa, argon gas with a purity of 99.99% was introduced, the vacuum chamber pressure was 1.2Pa, the sputtering power was 80W, and the deposition time was 20min.

[0027] (2) Nickel-plated graphene: nickel powder: silver powder is loaded into the ball mill at a weight ratio of 5:40:55, using alumina ball ink tanks and agate balls, and the ball-to-mate...

Embodiment 3

[0031] (1) Nickel-coated graphene was prepared by depositing metallic nickel on the surface of graphene (1-10 layers) by DC magnetron sputtering. The nickel target with a purity of 99.99% was polished with fine sandpaper before installation to remove the surface oxide film, then cleaned with acetone, dried, and pre-sputtered for 5 minutes before deposition by DC magnetron sputtering. Graphene separates, removes metal oxides and other impurities on the target surface, and ensures the purity of the nickel film deposited on the subsequent graphene surface. The sputtering parameters are as follows: the vacuum degree reaches 0.3*10 -3 At Pa, argon gas with a purity of 99.99% was introduced, the vacuum chamber pressure was 1.0Pa, the sputtering power was 110W, and the deposition time was 5min.

[0032] (2) Nickel-plated graphene: nickel powder: silver powder is loaded into the ball mill at a weight ratio of 2:10:88, using alumina ball ink tanks and agate balls, and the ball-to-mate...

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Abstract

The invention relates to a preparation method of a nickel-plated graphene / silver-nickel electrical contact material. The preparation method comprises the following steps: performing direct-current magnetron sputtering and nickel plating of graphene, ball-milling and mixing nickel-plated graphene, silver powder and nickel powder, cold pressing and forming, sintering, and processing and forming, wherein the material comprises 0.1-5.0 wt% of nickel-plated graphene, 10-40 wt% of nickel powder and the rest of silver powder ball-milled mixed powder. A nickel-plated graphene reinforcing body is added into the silver powder and the nickel powder, such that the hardness, the abrasive resistance and the melting-welding resistance of silver are improved while the electrical conductivity and the thermal conductivity of the electrical contact material prepared by the invention are not decreased.

Description

technical field [0001] The invention relates to a preparation method of an electric contact material, in particular to a preparation method of a nickel-plated graphene / silver-nickel electric contact material. Background technique [0002] AgNi material has good processing performance, good wear resistance, low and stable contact resistance and other excellent properties and is used in various small and medium current relays, master switches, and contactor contacts, but due to its anti-welding Poor performance, which affects its wider application. Studies have shown that adding graphite to silver-nickel materials can prevent welding and bonding of contacts, reduce contact resistance of contacts, and improve electrical conductivity and welding resistance. [0003] The existing patent (publication number 102808098A) discloses a preparation method of silver / nickel / graphite electrical contact material, which adopts the method of electroless plating, coats nickel on the surface o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H11/04C22C1/05C22C5/06
CPCC22C1/05C22C5/06H01H11/04
Inventor 冷金凤田首夫王志斌周庆波董云帆
Owner UNIV OF JINAN
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