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Nano-carbon-reinforced wear-resistant composite material

A composite material and nano-carbon technology, which is applied in the field of wear-resistant composite materials reinforced by nano-carbon materials, to achieve the effects of stabilizing the friction coefficient, improving thermal conductivity, and reducing wear

Inactive Publication Date: 2016-04-13
SUZHOU FIRST ELEMENT NANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The wear-resistant materials in the prior art are usually mixed with graphite, but the actual resistivity and compressive strength of the material still have room for improvement

Method used

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Embodiment 1

[0029] The nanocarbon-reinforced wear-resistant composite material involved in this embodiment includes: a copper matrix with a particle size of 5 to 10 microns; ceramic powder of silicon carbide and molybdenum disulfide with a particle size of 300 to 3 microns; The nano-carbon is selected from multi-walled carbon nanotubes, the outer diameter of which is 50-80 nanometers, and the length is 3-5 microns. The composite material formula includes 75% of copper powder, 10% of silicon carbide, 12% of molybdenum disulfide, and 3% of carbon nanotubes in weight ratio. In order to compare the application effect of CNT, in this example, 1000-mesh flake graphite powder (with a particle size of about 13um) of the same weight was used instead of carbon nanotubes, and a comparative sample was prepared under the same conditions. The specific preparation method is as follows:

[0030] 1) Dry the powders of carbon nanotubes, silicon carbide, molybdenum disulfide and other components at 85°C, a...

Embodiment 2

[0038] The nano-carbon reinforced wear-resistant composite material involved in this embodiment includes: iron powder (70-100 microns in particle size), copper powder (50-100 microns in particle size), manganese powder (50-100 microns in particle size ), chromium powder (50-100 microns in particle size), molybdenum disulfide powder (50-100 microns in particle size), and a 4:1 mixture of single-walled carbon nanotubes and multi-walled carbon nanotubes for nano-carbon, among which single-walled carbon The outer diameter of the nanotube is 2 nanometers, and the length is 10-30 micrometers, and the outer diameter of the multi-walled carbon nanotube is 30-60 nanometers, and the length is 5-15 micrometers. The formula of the composite material includes 70% of iron powder, 16% of copper powder, 8% of manganese powder, 4% of chromium powder, 7% of molybdenum disulfide and 1% of carbon nanotube according to the weight ratio. In order to compare the application effect of CNT, an equal w...

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Abstract

The invention belongs to the technical field of materials, and specifically relates to a nano-carbon-reinforced wear-resistant composite material. The nano-carbon-reinforced wear-resistant composite material comprises the following components in percentage by mass: 55-99% of metal powder, 0.1-35% of ceramic powder, and 0.01-15% of nano-carbon, wherein the metal powder is used as a composite material matrix; the ceramic powder is used as a wear-resistant filling material; and the nano-carbon comprises single-wall carbon nano-tubes, multi-wall carbon nano-tubes and other materials, and is mainly used for improving the heat-conducting performance, strength, toughness, wear resistance and other performances of the composite material. The wear-resistant composite material disclosed by the invention can keep a stable friction coefficient and a low wear rate under the conditions of a heavy load, a high speed, and long-time braking.

Description

technical field [0001] The invention relates to the field of material technology, in particular to the field of metal-based wear-resistant materials, in particular to a wear-resistant composite material reinforced by nano-carbon materials. Background technique [0002] Wear-resistant materials are the core of the field of new materials and play an important role in promoting and supporting the development of high-tech. In the field of new materials research in the world, wear-resistant materials account for about 85%. At the same time, wear-resistant materials are one of the most critical safety parts in vehicles represented by vehicles, and play a decisive role in the braking effect. Existing conventional braking materials, such as semi-metal-based synthetic materials, copper-based / iron-based wear-resistant materials, etc., have a large room for improvement in terms of friction coefficient and running stability, as well as thermal conductivity and wear resistance. . [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C32/00C22C1/05C22C1/10C22C38/16C22C38/04C22C38/18C22C38/60C22C33/02C22C47/14C22C49/02C22C49/08C22C49/14C22C101/10
CPCC22C1/05C22C1/10C22C9/00C22C32/00C22C32/0047C22C33/0278C22C38/04C22C38/16C22C38/18C22C38/60C22C47/14C22C49/02C22C49/08C22C49/14
Inventor 肖伟李红董明
Owner SUZHOU FIRST ELEMENT NANO TECH
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