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Method for macroscopic super-lubricity of friction surface grown graphene

A technology of friction surface and graphene, which is applied in the field of macroscopic lubrication, can solve problems such as the difficulty of achieving macroscopic super-slip on the surface, the application of mechanical moving parts, etc., and achieve the effect of reducing the friction coefficient and friction force

Active Publication Date: 2017-08-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, the super-slippery technology has attracted widespread attention and made good progress, but the super-smooth scale is only limited to the micron or even nano-scale, and it is difficult to apply it to the actual visible mechanical moving parts. Therefore, It is extremely difficult to achieve macroscopic supersmoothness on the surface, and it is also a hot and difficult issue in the fields of international tribology, advanced manufacturing, energy, physics, chemistry, materials, etc.

Method used

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  • Method for macroscopic super-lubricity of friction surface grown graphene

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Experimental program
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Effect test

Embodiment 1

[0032]The quartz friction pair was ultrasonically cleaned with acetone and dried for 10 minutes; the friction pair was placed in a plasma-enhanced chemical vapor deposition equipment quartz furnace tube, and the temperature was raised to 800 °C within 50 minutes under a hydrogen (20 sccm) atmosphere. The radio frequency power is adjusted to 250W, and the methane precursor (16sccm) is passed through to grow graphene. The growth time is 30min; the growth is completed, cooled to room temperature, and the friction pair is taken out; The amplitude is 2 mm, the swing frequency is 0.1 Hz, the host is started, and the measured friction coefficient is 0.15. The measured friction coefficient is 0.35 under the condition that no graphene is grown and no micron particles are added.

Embodiment 2

[0034] The quartz friction pair and lubricating particles were ultrasonically cleaned with acetone, and the ultrasonic cleaning time was 10 min; the friction pair and lubricating particles were placed in the quartz furnace tube of plasma-enhanced chemical vapor deposition equipment respectively, and the average particle size of the lubricating particles was 10 μm. ) atmosphere within 50 minutes, the temperature was raised to 800°C, the radio frequency power was adjusted to 150W, and the methane precursor (16sccm) was introduced to grow graphene. The growth time was 30 minutes; the growth was completed, cooled to room temperature, and the friction pair and lubricating particles were taken out , evenly distribute the lubricating particles on the surface of the friction pair; place the friction pair on the testing machine, adjust the pressure to 50mN, swing amplitude 2mm, swing frequency 0.1Hz, start the host, and the measured friction coefficient is 0.01.

Embodiment 3

[0036] The quartz friction pair and lubricating particles were ultrasonically cleaned with acetone, and the ultrasonic cleaning time was 10 min; the friction pair and lubricating particles were placed in the quartz furnace tube of plasma-enhanced chemical vapor deposition equipment respectively, and the average particle size of the lubricating particles was 10 μm. ) atmosphere within 50 minutes, the temperature was raised to 800°C, the radio frequency power was adjusted to 250W, and the methane precursor (16sccm) was introduced to grow graphene, and the growth time was 30 minutes; the growth was completed, cooled to room temperature, and the friction pair and lubricating particles were taken out , evenly distribute the lubricating particles on the surface of the friction pair; place the friction pair on the testing machine, adjust the pressure to 50mN, swing amplitude 2mm, swing frequency 0.1Hz, start the host, and the measured friction coefficient is 0.005.

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Abstract

The invention provides a method for macroscopic super-lubricity of friction surface grown graphene and belongs to the technical field of macroscopic lubrication. A friction pair pairing surface is provided with highly oriented pyrolytic graphite, molybdenum disulfide, tungsten disulfide or quartz where graphene grows, copper or nickel. The particle size of lubricating particles is 0.5-100 [mu]m, and the lubricating particles have a single particle size or a combination of different particle sizes. A cleaned friction pair or the lubricating particles are placed in a plasma enhanced chemical vapor deposition tube furnace, hydrogen is led in, the temperature rises to 600-1000 DEG C in 40-60 min, methane is led in to serve as a growth precursor, and growth time is 20-60 min. The lubricating particles are evenly distributed between the upper surface and the lower surface of the friction pair, an applied load is 1 mN to 1 N, a friction distance is 0.5-2 mm, and swing frequency is 0.1-2 Hz. Under room temperature conditions, through testing for 800-1000 s, the friction coefficient is stabilized at 0.003-0.008. The method for surface macroscopic super-lubricity is implemented.

Description

technical field [0001] The invention provides a macroscopic super-slip method for growing graphene on a friction surface, which belongs to the technical field of macroscopic lubrication. Background technique [0002] In people's lives, friction can be seen everywhere. According to reports, the loss caused by friction and wear accounts for 2-7% of the gross national product, nearly 1 / 3 of the fuel in the car is used to overcome friction and consume, and the generation of wear and tear greatly reduces the service life of mechanical parts. Friction and the resulting wear have a huge impact on energy, environment, technology and economy in the world today. The friction force is reduced by 20%, and due to the effects of energy saving and environmental protection, it will have a huge impact on the consumer economy. Therefore, under the same working conditions, reducing the friction force between the friction pairs during the mechanical movement and reducing the friction coeffici...

Claims

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Application Information

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IPC IPC(8): C01B32/186F16N15/02
CPCF16N15/02
Inventor 张振宇杜岳峰郭梁超郭东明
Owner DALIAN UNIV OF TECH
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