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Copper-based and iron-based composite electric contact material and preparation method thereof

An electrical contact material, copper-based technology, used in contacts, circuits, electrical switches, etc., can solve problems such as easy oxidation and non-conductive oxide film

Active Publication Date: 2021-08-31
SUZHOU YUDESHUI ELECTRIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with silver, the biggest problem with copper as an electrical contact material is that it is easy to oxidize, and the resulting oxide film is not conductive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A copper-based iron-based composite electrical contact material, mainly comprising:

[0030] 20 parts of graphene oxide, 5 parts of ferric oxide, 100 parts of ferric chloride solution, 70 parts of copper base material; the mass fraction of the ferric chloride solution is 25%; the copper base material is chromium, Made by mixing tungsten carbide and copper.

[0031] A preparation method of a copper-based iron-based composite electrical contact material, the preparation method of the copper-based iron-based composite electrical contact material is:

[0032] (1) Graphene oxide and ferric oxide powder are mixed and dispersed in water, the mass ratio of graphene oxide, ferric oxide powder, and water is 4:1:4; and centrifuged in a high-speed centrifuge, the centrifuge The rotating speed is 10000rpm, and the time is 40min. After removing the supernatant, the graphene oxide spinning solution is obtained;

[0033] (2) Pour the graphene oxide spinning solution into the spinning...

Embodiment 2

[0039] A copper-based iron-based composite electrical contact material, mainly comprising:

[0040] 30 parts of graphene oxide, 6 parts of ferric oxide, 300 parts of ferric chloride solution, 110 parts of copper base material; the mass fraction of the ferric chloride solution is 50%; the copper base material is chromium, Made by mixing tungsten carbide and copper.

[0041] A preparation method of a copper-based iron-based composite electrical contact material, the preparation method of the copper-based iron-based composite electrical contact material is:

[0042] (1) Graphene oxide and ferric oxide powder are mixed and dispersed in water, the mass ratio of graphene oxide, ferric oxide powder, and water is 4:1:6; and centrifuged in a high-speed centrifuge, the centrifuge The rotating speed is 15000rpm, and the time is 60min. After removing the supernatant, a graphene oxide spinning solution is obtained;

[0043] (2) Pour the graphene oxide spinning solution into the spinning ...

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Abstract

The invention discloses a copper-based and iron-based composite electric contact material and a preparation method thereof, and relates to the technical field of new materials. The preparation method comprises the following steps that modified graphene fibers containing ferroferric oxide are firstly prepared, the modified graphene fibers containing ferroferric oxide are added into a copper-based material, pretreatment is carried out, and then a product is prepared; during pretreatment, vacuum hot pressed sintering is firstly carried out, then vacuum spark plasma sintering is carried out, sintering and annealing are carried out after pretreatment to obtain the product; and the prepared modified graphene fibers containing ferroferric oxide is loose and porous, can form an electrified network structure in the copper-based material conveniently during hot pressing sintering, and are more easily broken into short fibers to be dispersed inside the copper-based material. The copper-based and iron-based composite electric contact material is good in conductivity, wear-resistant and long in service life.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a copper-based iron-based composite electrical contact material and a preparation method thereof. Background technique [0002] Electrical contact materials are very important components in switching appliances and electronic instruments and meters. They directly play the role of breaking and connecting circuits and bear the function of normal working current. Their performance is related to the normal operation and service life of switching appliances important role. Therefore, electrical contact materials are usually required to have good electrical conductivity, high thermal conductivity, low and stable contact resistance, excellent wear resistance, and welding resistance. [0003] Copper-based materials are low in cost, rich in resources, and have good electrical conductivity and good chemical stability. Currently, they are one of the important development directions for low-vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C49/02C22C49/14C22C47/14C22C47/02B22F3/14B22F3/105C22F1/08C21D1/26H01H1/025H01H11/04D01F9/12D01F1/10C22C101/10
CPCC22C49/02C22C49/14C22C47/14C22C47/02B22F3/14B22F3/105C22F1/08H01H1/025B22F3/24B22F3/1007B22F3/10H01H1/027B64G1/546B22F2003/1051B22F2003/248B22F2999/00B22F2201/20
Inventor 郑有亮
Owner SUZHOU YUDESHUI ELECTRIC TECH CO LTD