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Transition metal oxide carried graphene enhanced copper-based composite electrocontact material and preparation method thereof

A technology of electrical contact materials and transition metals, which is applied in the field of graphene-reinforced copper-based composite electrical contact materials and its preparation, can solve the problems of poor arc ablation resistance and wear resistance, and achieve wear resistance and arc ablation resistance Improved performance, improved wear resistance, improved dispersibility

Active Publication Date: 2016-05-25
HEILONGJIANG HEIKE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of poor wear resistance and arc ablation resistance of existing graphene-reinforced copper-based composite materials, and provides a graphene-reinforced copper-based composite electrical contact material loaded with transition metal oxides and its Preparation

Method used

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specific Embodiment approach 1

[0010] Specific Embodiment 1: The graphene-reinforced copper-based composite electrical contact material loaded with transition metal oxides in this embodiment consists of 0.1% to 3% of graphene loaded with transition metal oxides and 97.0% to 99.9% of Composition of copper, where the transition metal oxide in graphene loaded with transition metal oxide is SnO 2 , ZnO, Fe 3 o 4 , CuO, NiO, MnO and Co 3 o 4 one or a mixture of several of them.

specific Embodiment approach 2

[0011] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the particle size of transition metal oxide is 500nm~100μm, the thickness of graphene is 1~10 layers, and the mass ratio of transition metal oxide and graphene is (0.5~3):1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Specific embodiment three: the preparation method of the graphene-reinforced copper-based composite electrical contact material carrying transition metal oxide described in specific embodiment one is as follows:

[0013] 1. Weigh 0.1% to 3% transition metal oxide / graphene powder and 97.0% to 99.9% copper powder by mass percentage and mix them uniformly to obtain primary mixed powder;

[0014] 2. Perform high-energy ball milling on the primary mixed powder with a ball mill or disperse and mix with a high-shear homogenizer to obtain a mixed powder;

[0015] 3. Put the mixed powder into the mold, hold the pressure for 2-10 minutes under the condition of 350-600 MPa, and obtain the billet; then put the billet into the vacuum sintering furnace, and raise the temperature to 750-600 MPa under vacuum condition. Sintering at 950° C. for 1 to 3 hours to obtain a graphene-reinforced copper-based composite electrical contact material loaded with transition metal oxides.

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Abstract

The invention relates to a graphene enhanced copper-based composite electrocontact material and a preparation method thereof, in particular to a transition metal oxide carried graphene enhanced copper-based composite electrocontact material and a preparation method thereof. The transition metal oxide carried graphene enhanced copper-based composite electrocontact material is composed of transition metal oxide carried graphene and copper, and the transition metal oxide refers to a mixture or one of SnO2, ZnO, Fe3O4, CuO, NiO, MnO and Co3O4. The preparation method includes: well mixing transition metal oxide / graphene powder and copper powder, and performing dispersive mixing to obtain mixed powder; putting the mixed powder into a grinding tool, pressing to obtain billets, and subjecting the billets to vacuum sintering to obtain the transition metal oxide carried graphene enhanced copper-based composite electrocontact material which can be used for manufacturing of electrical contact elements. The problems of poor abrasion resistance and poor arc ablation resistance of existing graphene enhanced copper-based composite materials are solved.

Description

technical field [0001] The invention relates to a graphene-reinforced copper-based composite electrical contact material and a preparation method thereof, belonging to the technical field of functional materials. Background technique [0002] Electrical contact material, also known as electrical contact, is an important component of switching electrical appliances, instruments, and meters, and it undertakes the task of turning on and off the current. The performance of electrical contact materials directly affects the safety and stability of equipment operation. It is usually required that the electrical contact material should have good electrical and thermal conductivity, low and stable contact resistance, high corrosion resistance, welding resistance and certain mechanical strength. At present, the electrical contact materials are mainly silver, copper and their alloys, and the most commonly used preparation methods are mainly powder metallurgy and smelting. Copper-base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05B22F9/04B22F3/10
CPCB22F3/10B22F9/04B22F2009/041B22F2009/043B22F2998/10B22F2999/00C22C1/05C22C9/00C22C32/001C22C32/0084B22F1/0003B22F3/02B22F3/1007B22F2201/20
Inventor 宋美慧张煜王珏刘洪成李岩李艳春
Owner HEILONGJIANG HEIKE TECH CO LTD
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