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Copper-based iron-based composite electric contact material
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An electrical contact material, copper-based technology, applied in contacts, circuits, electrical switches, etc., can solve the problems of non-conductive oxide film and easy oxidation
Active Publication Date: 2022-05-13
SHENZHEN FRENDA TECH
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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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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) Mix and disperse graphene oxide and ferric oxide powder in water, the mass ratio of graphene oxide, ferric oxide powder and water is 4:1:4; and centrifuge 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 tube for...
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) Mix and disperse graphene oxide and ferric oxide powder in water, the mass ratio of graphene oxide, ferric oxide powder and water is 4:1:6; and centrifuge 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 tube for ...
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Abstract
The invention discloses a copper-based iron-based composite electric contact material, and relates to the technical field of new materials. The preparation method comprises the following steps: preparing modified graphene fibers containing ferroferric oxide, adding the modified graphene fibers containing ferroferric oxide into a copper-based material, carrying out pretreatment, and then preparing the product. During pretreatment, vacuum hot pressed sintering is firstly carried out, then vacuum spark plasma sintering is carried out, sintering is carried out after pretreatment, and annealing is carried out to obtain the product; the prepared modified graphene fiber containing ferroferric oxide is loose and porous, so that an electrified network structure is conveniently formed in a copper-based material during hot pressing sintering, and the modified graphene fiber is easier to break into short fibers to be dispersed in the copper-based material. The copper-based and iron-based composite electric contact material prepared by the invention 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. 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-voltage electrical contact materials...
Claims
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Application Information
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