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Method for preparing metal two-dimension nanometer anti-friction thin film through shearing, hot-pressing and combination

A technology of two-dimensional nano and metal nanoparticles, which is applied in the field of preparing two-dimensional nano metal anti-friction films, can solve the problems of single deformation form, high surface roughness, narrow synthesis temperature range, etc., to reduce complexity and reduce agglomeration. Effect

Inactive Publication Date: 2020-06-16
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to make up for the fact that the existing mechanical pressure synthesis device can only provide a single deformation form of radial pressure, which is limited to a single deformation form, so that the thickness of the nano-film cannot be further reduced; the synthesis temperature range is narrow; now The thickness of the nano-film synthesized by existing technology is generally high, and the surface roughness is high.

Method used

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  • Method for preparing metal two-dimension nanometer anti-friction thin film through shearing, hot-pressing and combination
  • Method for preparing metal two-dimension nanometer anti-friction thin film through shearing, hot-pressing and combination

Examples

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Effect test

Embodiment 1

[0029] A method for preparing a metal two-dimensional nano-friction-reducing film by shearing and hot pressing, the preparation steps are:

[0030] Step 1. On a clean silicon substrate, evenly spread metal nanoparticles with a concentration of 1-2 mg / L. The method for dispersing the solution is as follows: accurately weigh the metal powder into a centrifuge tube, and add a corresponding amount of ethanol solution. Prepare an ethanol solution with a concentration of 1-2 mg / L. The solution was first treated with magnetic stirring for 30 minutes, then ultrasonicated for 30 minutes, then centrifuged for 10 minutes, repeated magnetic stirring for 10 minutes, and finally ultrasonicated for 10 minutes. Make the metal powder highly dispersed in the ethanol solution, use a pipette to draw 38~40 μL and drop it on 1x1 cm 2 on a silicon substrate. Finally, using a light microscope to observe the spreading of metal nanoparticles on the silicon substrate, the results are as follows: fig...

Embodiment 2

[0037] A two-dimensional nano-metal friction reducer, including metal two-dimensional thin film material, the metal two-dimensional material is composed of the following weight of raw materials: 4 mg of metal powder with a relatively uniform particle size and 50 mL of absolute ethanol; The metal powder consisted of the following metal powders: Au powder 4 mg.

[0038] Its preparation method comprises the following steps:

[0039] Step 1, put the substrate 2 into ethanol for the first step of cleaning, then use a cotton swab to scrub, and finally dry it for later use.

[0040]Step 2: First, fill a 50 mL centrifuge tube with ethanol and ultrasonically clean it for later use, use a precision balance to weigh the metal powder into the centrifuge tube, and pour absolute ethanol into the centrifuge tube. The prepared solution was first ultrasonicated in an ultrasonic instrument for 30 min, then the solution was centrifuged for 10 min, magnetic stirring was repeated for 10 minutes, ...

Embodiment 3

[0046] A two-dimensional nano-metal friction reducer, including metal two-dimensional thin film material, the metal two-dimensional material is composed of the following weight of raw materials: 6 mg of metal powder with a relatively uniform particle size and 50 mL of absolute ethanol; The metal powder consisted of the following metal powders: Cu powder 4 mg.

[0047] Its preparation method comprises the following steps:

[0048] Step 1, put the substrate 2 into ethanol for the first step of cleaning, then use a cotton swab to scrub, and finally dry it for later use.

[0049] Step 2: First, fill a 50 mL centrifuge tube with ethanol and ultrasonically clean it for later use, use a precision balance to weigh the metal powder into the centrifuge tube, and pour absolute ethanol into the centrifuge tube. The prepared solution was first ultrasonicated in an ultrasonic instrument for 30 min, then the solution was centrifuged for 10 min, magnetic stirring was repeated for 10 minutes,...

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Abstract

The invention discloses a method for preparing a metal two-dimension nanometer anti-friction thin film through shearing, hot-pressing and combination. The method includes the preparation steps that asample is spread, specifically, fully dispersed metal nanoparticles with the concentration being 1-2 mg / L are spread on a silicon substrate; sample loading is performed, specifically, a clean siliconsubstrate reversely covers the silicon substrate where the metal nanoparticles are spread; combination preparation is performed, specifically, a sample is subjected to the process of pressurization, pressure-maintaining heating and pressure-maintaining heat-preservation shearing; and a processed sample is taken out, specifically, heating is stopped, after the temperature is decreased to the room temperature, the sample is subjected to linear pressure relief, the silicon substrates are separated, and the two silicon substrates can be uniformly covered with a metal two-dimension nanometer anti-friction thin film which is lower than 5 nm in thickness. By means of the shearing and hot-pressing method, the two-dimension nanometer metal anti-friction thin film is prepared, the obtained two-dimension nanometer metal anti-friction thin film is high in purity and lower than 5 nm in thickness, operation is simple and convenient, the cost is low, and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to the technical field of preparing a two-dimensional nano-metal friction-reducing film, in particular to a method for preparing a metal two-dimensional nano-friction-reducing film by shearing and hot pressing. Background technique [0002] With the rapid development of microelectronics and MEMS technology, the research on nano-devices is getting more and more in-depth. Due to the size effect, the tension, adhesion and friction will change, resulting in greater wear. The microscopic wear mainly considers the lubrication of the solid film. [0003] With the continuous development and improvement of two-dimensional layered materials, more and more attention has been paid to two-dimensional non-layered materials. Metal two-dimensional nanomaterials have ultra-thin two-dimensional materials, ultra-high aspect ratios, and unique electrical and optical properties. And it has anti-friction properties, and is often used as a solid anti-f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C26/00B82Y40/00
CPCB82Y40/00C23C26/00
Inventor 岳文佘丁顺舒登峰关芮田斌黄海鹏康嘉杰
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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