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Low-friction thin film for inner wall of solar panel driving bearing and preparation method of low-friction thin film

A technology for driving bearings and solar panels, which is applied to the device for coating liquid on the surface, vacuum evaporation coating, coating, etc. It can solve the problem that it is difficult for space vehicle lubrication, and grease lubrication is prone to evaporation, decomposition or crosslinking and other problems, to achieve the effect of reducing the friction coefficient, increasing the service life, and lowering the preparation cost

Active Publication Date: 2022-03-01
CHINA UNIV OF GEOSCIENCES (BEIJING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the influence of harsh environmental factors in space, traditional grease lubrication is prone to evaporation, decomposition or cross-linking, and it is difficult to be suitable for the lubrication of space vehicles

Method used

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  • Low-friction thin film for inner wall of solar panel driving bearing and preparation method of low-friction thin film
  • Low-friction thin film for inner wall of solar panel driving bearing and preparation method of low-friction thin film
  • Low-friction thin film for inner wall of solar panel driving bearing and preparation method of low-friction thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Step 1 Prepare the Ti layer: use GCr15 steel sheet as the substrate of the deep groove ball bearing, put it into acetone and alcohol for 30 minutes and ultrasonically clean it for 30 minutes, and dry it with a dust-free cloth after ultrasonic cleaning. Set the bias voltage of the deposition coating system to 500V, pass high-purity argon gas 20sccm; Ti target current 0.2A, perform bombardment etching pretreatment on the inner wall of the deep groove ball bearing for 10 minutes; deposit a Ti layer film on the inner wall of the pretreated bearing, The deposition and coating conditions are as follows: the bias voltage of the deposition and coating system is 95V, the high-purity argon gas is 18sccm; the Ti target current is 3A, and the deposition time is 12min.

[0052] Step 2 Preparation of MoS 2 -Ti / Pb layer: Deposit MoS on the surface of Ti film 2 -Ti / Pb, MoS 2 -The process parameters in the unbalanced magnetron sputtering process of Ti / Pb thin film are gas: high-purity...

Embodiment 2

[0058] Step 1 Prepare the Ti layer: use GCr15 steel sheet as the substrate of the deep groove ball bearing, put it into acetone and alcohol for 30 minutes and ultrasonically clean it for 30 minutes, and dry it with a dust-free cloth after ultrasonic cleaning. Set the bias voltage of the deposition coating system to 500V, pass high-purity argon gas 20sccm; Ti target current 0.2A, perform bombardment etching pretreatment on the inner wall of the deep groove ball bearing for 10 minutes; deposit a Ti layer film on the inner wall of the pretreated bearing, The deposition and coating conditions are as follows: the bias voltage of the deposition and coating system is 90V, the high-purity argon gas is 16sccm; the Ti target current is 2A, and the deposition time is 10min.

[0059] Step 2 Preparation of MoS 2 -Ti / Pb layer: Deposit MoS on the surface of Ti film 2 -Ti / Pb, MoS 2 -The process parameters in the unbalanced magnetron sputtering process of Ti / Pb thin film are gas: high-purity...

Embodiment 3

[0065] Step 1 Prepare the Ti layer: use the GCr15 steel sheet as the substrate of the deep groove ball bearing, put it in acetone and alcohol for 30 minutes and ultrasonically clean it for 30 minutes, and dry it with a dust-free cloth after the ultrasonic cleaning. Set the bias voltage of the deposition coating system to 500V, pass high-purity argon gas 20sccm; Ti target current 0.2A, perform bombardment etching pretreatment on the inner wall of the deep groove ball bearing for 10 minutes; deposit a Ti layer film on the inner wall of the pretreated bearing, The deposition and coating conditions are as follows: the bias voltage of the deposition and coating system is 100V, the high-purity argon gas is passed through 20sccm; the Ti target current is 4A, and the deposition time is 14min.

[0066] Step 2 Preparation of MoS 2 -Ti / Pb layer: Deposit MoS on the surface of Ti film 2 -Ti / Pb, MoS 2 -The process parameters in the unbalanced magnetron sputtering process of Ti / Pb thin fil...

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Abstract

The invention provides a low-friction thin film for the inner wall of a solar panel driving bearing and a preparation method of the low-friction thin film, and relates to the technical field of material thin films. The low-friction thin film is of a multi-layer structure, the bottom layer of the thin film is attached to the surface of the inner wall of the bearing, a Ti layer, a MoS2-Ti / Pb layer, a graphene layer and grooves distributed in the surface of the inner wall of the bearing are sequentially arranged from the inner wall of the bearing to the outside, and the grooves are filled with lubricating materials. The preparation technology is simple, the composite film is of a three-layer structure, the thickness is only 2.5 microns, the good low-friction and high-mechanical-strength effects can be achieved, the roughness of the film is lower than 6 nm, the hardness is higher than 7 Gpa, the friction coefficient is lower than 0.03 in the vacuum 7 * 10 <-4 > Gpa environment, and the composite film can be suitable for various complex external environments and has the wear-resisting and lubricating effects.

Description

technical field [0001] The invention belongs to the technical field of material films, and in particular relates to a low-friction film used for the inner wall of a driving bearing of a solar panel and a preparation method thereof. Background technique [0002] Space vehicles are not only subject to complex space environments, but also have requirements such as low friction, low wear, long life, and high vacuum. Under the influence of harsh environmental factors in space, traditional grease lubrication is prone to evaporation, decomposition or cross-linking, and it is difficult to be suitable for the lubrication of space vehicles. The solid lubricating film has the advantages of low evaporation rate, wide working temperature range, radiation resistance and corrosion resistance, among which MoS 2 It has been widely used in space vehicle lubrication. [0003] The driving bearings of solar panels of space vehicles must meet the lubrication requirements in both vacuum and humi...

Claims

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Application Information

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IPC IPC(8): C23C14/16C23C14/06C23C14/35C23C14/02B05D7/24B05D5/00B05D5/08
CPCC23C14/165C23C14/0688C23C14/352C23C14/022B05D7/24B05D5/00B05D5/08
Inventor 康嘉杰林宁岳文李伟青佘丁顺田斌朱丽娜唐云龙付志强孟德忠王成彪
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)