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Preparation method of nickel-plated graphene-reinforced silver-based electrical contact material

A technology of electric contact material and nickel-plated graphite, which is applied in the directions of contacts, circuits, electric switches, etc., can solve the problems that are difficult to meet environmental protection requirements, and achieve the effects of easy control of the deposition process, improvement of interface bonding, and avoidance of aggregation

Active Publication Date: 2016-06-15
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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  • Preparation method of nickel-plated graphene-reinforced silver-based electrical contact material

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Experimental program
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Effect test

Embodiment 1

[0022] (1) Nickel-plated graphene is prepared by depositing metallic nickel on the surface of graphene (the number of layers is 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 DC magnetron sputtering deposition. The graphene is separated to remove metal oxides and other impurities on the surface of the target material, so as to ensure the purity of the subsequent nickel film deposited on the surface of the graphene. The sputtering parameters are as follows: the degree of vacuum reaches 0.1*10 -3 When 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.

[0023] (2) An alloy with a weight content of 5.0% nickel and 95.0% silver was prepared into 200 mesh AgNi5 powder by ultrasonic a...

Embodiment 2

[0028] (1) Nickel-plated graphene is prepared by depositing metallic nickel on the surface of graphene (the number of layers is 1-10 layers) by DC magnetron sputtering. The silver target with a purity of 99.99% was polished with fine sandpaper before installation to remove the surface oxide film, then washed with acetone, dried, and pre-sputtered for 5 minutes before DC magnetron sputtering deposition. The graphene is separated to remove metal oxides and other impurities on the surface of the target material, so as to ensure the purity of the subsequent nickel film deposited on the surface of the graphene. The sputtering parameters are as follows: the degree of vacuum reaches 1.0*10 -3 When 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.

[0029] (2) A 300-mesh AgNi20 powder was prepared from a silver alloy with a weight content of 20.0% nickel and 80.0% by centrifuga...

Embodiment 3

[0034] (1) Nickel-plated graphene is prepared by depositing metallic nickel on the surface of graphene (the number of layers is 1-10 layers) by DC magnetron sputtering. The silver target with a purity of 99.99% was polished with fine sandpaper before installation to remove the surface oxide film, then washed with acetone, dried, and pre-sputtered for 5 minutes before DC magnetron sputtering deposition. The graphene is separated to remove metal oxides and other impurities on the surface of the target material, so as to ensure the purity of the subsequent nickel film deposited on the surface of the graphene. The sputtering parameters are as follows: the degree of vacuum reaches 0.3*10 -3 When 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.

[0035] (2) A 300-mesh AgNi10 powder was prepared from a silver alloy with a weight content of 10.0% nickel and 90.0% by gas atomiz...

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Abstract

The invention relates to a preparation method of a nickel-plated graphene-reinforced silver-based electrical contact material. The method comprises the following steps: plating nickel on graphene by DC magnetron sputtering; preparing silver-nickel alloy powder; carrying out ball-mill mixing on nickel-plated graphene and the silver-nickel alloy powder; carrying out cold press molding and sintering; and processing and forming the nickel-plated graphene-reinforced silver-based electrical contact material. The weight ratio of the nickel-plated graphene to the silver-nickel alloy powder is (0.1-3.0) to (97.0-99.9). According to the electrical contact material prepared by the method, the nickel-plated graphene is added to the silver-nickel alloy as reinforcement, so that the hardness and the fusion welding resistance of the material are improved when the electrical conductivity and the thermal conductivity are not reduced.

Description

technical field [0001] The invention relates to a preparation method of an electrical contact material, in particular to a preparation method of a nickel-plated graphene reinforced silver-based electrical contact material. Background technique [0002] AgNi material has good processing performance, good wear resistance, low and stable contact resistance and other excellent properties, which are used in various medium and small current relays, master switches, and contactor contacts, but due to its anti-welding properties The performance is poor, which affects its wider application. Studies have shown that the addition of graphite to the silver-nickel material can prevent the welding and bonding of the contacts, reduce the contact resistance of the contacts, and improve the electrical conductivity and resistance to welding. [0003] The existing patent (Publication No. 102808098A) discloses a method for preparing a silver / nickel / graphite electrical contact material. The meth...

Claims

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Application Information

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IPC IPC(8): H01H1/023H01H1/027H01H11/04
CPCH01H1/023H01H1/027H01H11/048
Inventor 冷金凤胡杰木周国荣王英姿
Owner UNIV OF JINAN
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