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Preparation method of silver-based contact material containing graphene

A contact material, graphene technology, applied in the direction of electrical components, electric switches, circuits, etc., can solve the problems of high cost of contact materials, unfavorable promotion and application, limited resource reserves, etc., to improve interface wettability, improve tissue Improvement of uniformity and arc corrosion resistance

Inactive Publication Date: 2016-08-10
SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since W, Ag, etc. are precious metals, the resource reserves are limited, and the use of such precious metals as raw materials makes the cost of contact materials too expensive, which is not conducive to popularization and application
In addition, the existing contact materials have poor wear resistance and are difficult to use on sliding contacts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The silver-based contact material of graphene in this embodiment includes silver, tin oxide, nickel oxide, lanthanum oxide, and silver-plated graphene, wherein the content of tin element is 5wt%, and the element content of nickel is 2wt% %, the content of lanthanum is 0.5wt%, the content of silver-plated graphene is 2.5wt% and inevitable impurities, and the balance elements are silver and oxygen.

[0023] Preparation of Nano SnO by Sol-Gel Method 2 Powder: SnCl 4 ·5H 2 O and TiCl 4 Add polyethylene glycol (PEG) dispersant to the alcoholic aqueous solution of ethylene glycol (PEG), stir at constant temperature, and drop ammonia water to pH 6.9-7.2 at the same time, and obtain gel through aging, washing, drying and grinding, wherein SnCl 4 ·5H 2 O and TiCl 4 The mass ratio of ethanol is 8.5:1, and the volume ratio of alcohol to water in the alcohol aqueous solution is 2:1.

[0024] The silver-plated graphene is made by depositing metallic silver on the surface of gr...

Embodiment 2

[0031] The silver-based contact material of graphene in this embodiment includes silver, tin oxide, nickel oxide, lanthanum oxide, and silver-plated graphene, wherein the content of tin element is 10wt%, and the element content of nickel is 5wt% %, the content of lanthanum is 1wt%, the content of silver-plated graphene is 3.5wt% and inevitable impurities, and the balance elements are silver and oxygen.

[0032] Preparation of Nano SnO by Sol-Gel Method 2 Powder: SnCl 4 ·5H 2 O and TiCl 4 Add polyethylene glycol (PEG) dispersant to the alcoholic aqueous solution, stir at constant temperature, and drop ammonia water to pH 6.9-7.2 at the same time, after aging, washing, drying, grinding to obtain gel, wherein SnCl 4 ·5H 2 O and TiCl 4 The mass ratio of ethanol is 9:1, and the volume ratio of alcohol to water in the alcohol aqueous solution is 2:1.

[0033]The silver-plated graphene is made by depositing metallic silver on the surface of graphene by DC magnetron sputtering m...

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Abstract

The invention discloses a preparation method of a silver-based contact material containing graphene. The silver-based contact material comprises silver oxide, tin oxide, nickel oxide, lanthanum oxide and silver-plated graphene, wherein the content of tin elements is 5-10 wt%, the content of nickel elements is 2-5 wt%, the content of lanthanum elements is 0.5-1 wt%, the content of the silver-plated graphene is 2.5-3.5 wt%, and the balance inevitable impurities, silver and oxygen. Through optimization selection of the ratios and process of the raw materials, the organization uniformity of the silver-based contact material prepared through the method is improved, and the electrical performance of the material is improved. SnO2 powder is prepared through a sol-gel process. Nano SnO2 is uniformly distributed and dispersed in silver base bodies. Contact resistance reduction caused by an insulation layer formed by enrichment of SnO2 can be avoided. The breaking effect of the oxide on the base bodies is reduced. The processing performance of the silver-based contact material can be effectively improved. The capability of welding resistance and electrical arc erosion resistance of the silver-based contact material are improved. The interface wettability between the graphene and metal is improved through the silver-plated grapheme, and the good interface bonding effect can be achieved, so that the electrical conductivity, the heat conducting property and electrical arc erosion resistance of the composite material are further improved, and the requirement for the performance of electrical contacts is met better.

Description

technical field [0001] The invention relates to the field of electric equipment manufacturing, in particular to a preparation method of a silver-based contact material containing graphene. Background technique [0002] Electrical contact elements are contact elements of electrical switches, instruments and meters, etc., and are widely used in electric power and telecommunication systems, that is, home appliance control and other equipment. Silver-based electrical contact materials have developed rapidly due to their low contact resistance, strong resistance to welding, good wear resistance, and strong electrical erosion resistance. Among them, silver-tin oxide electrical contact materials have developed rapidly in the past 10 years. A new environment-friendly electrical contact material that can replace the toxic silver cadmium oxide. It has good thermal stability, arc corrosion resistance and welding resistance, long service life and wide current range, so it can ensure the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/06C22C32/00C22C1/05C22C1/10H01H11/04
CPCC22C5/06C22C1/05C22C1/101C22C1/1078C22C32/00H01H11/048
Inventor 不公告发明人
Owner SUZHOU SICHUANGYUANBO ELECTRONICS TECH CO LTD
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