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Solid-liquid composite lubricating system for reducing friction coefficient of moving part

A friction coefficient, solid-liquid composite technology, applied in lubricating compositions, ion implantation plating, coatings, etc., can solve the problem that the tribological behavior of solid lubricating films is easily affected by environmental factors, and reduce frictional shear. Effective force, reduced contact area, improved long life and high reliability

Pending Publication Date: 2020-09-04
LANZHOU UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the tribological behavior of solid lubricant films is easily affected by environmental factors.

Method used

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  • Solid-liquid composite lubricating system for reducing friction coefficient of moving part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 A solid-liquid composite lubrication system that reduces the friction coefficient of moving parts. The system is composed of a solid lubricating film and lubricating oil.

[0019] Among them: solid lubricating film means that the diamond-like carbon film is made of high-power pulse sputtering metal titanium or chromium as the bottom layer, and after 10-30 minutes of deposition, the diamond-like carbon film is deposited on the stainless steel surface. Methane and argon with a purity greater than 99.99% are introduced, and the gas pressure ratio of methane and argon is 1:1; the pulse bias is adjusted to 300V, the graphite target current is 5A, and the time is 120min to obtain a film with a thickness of 2.3 microns.

[0020] Lubricating oil refers to polyalphaolefin (PAO4) with additives (R 1 -CO-N-C 2 h 4 o 2 -B-OR 2 , where R 1 , R 2 It is the alkane chain) prepared according to the mass ratio of 200:1.

[0021] Taking GCr15 bearing steel as the friction...

Embodiment 2

[0022] Example 2 A solid-liquid composite lubrication system that reduces the friction coefficient of moving parts. The system is composed of a solid lubricating film and lubricating oil.

[0023] Among them: the solid lubricating film means that the molybdenum disulfide film is made of high-power pulse sputtering metal molybdenum as the bottom layer, and after 15 minutes of deposition, the molybdenum disulfide film is deposited on the surface of the tool steel. Introduce argon gas with a purity greater than 99.99%, adjust the pulse bias voltage to 400V, molybdenum disulfide target current to 8A, and time to 100min to obtain a film with a thickness of 2.1 microns.

[0024] Lubricating oil refers to alkane mineral oil and additives (R 1 -CO-N-C 2 h 4 o 2 -B-OR 2 , where R 1 , R 2 It is the alkane chain) prepared according to the mass ratio of 100:5.

[0025] Taking aluminum oxide as the frictional couple, under the conditions of load 10N and frequency 10Hz, the solid-liq...

Embodiment 3

[0026] Example 3 A solid-liquid composite lubrication system that reduces the friction coefficient of moving parts. The system is composed of a solid lubricating film and lubricating oil.

[0027] Among them: the solid lubricating film means that the titanium nitride film is made of high-power pulse sputtering metal titanium or chromium as the bottom layer, and after 20 minutes of deposition, the titanium nitride film is deposited on the stainless steel surface. Introduce nitrogen and argon with a purity greater than 99.99%, and the pressure ratio of nitrogen to argon is 2:1; adjust the pulse bias to 800V, titanium target current to 10A, and time to 80min to obtain a film with a thickness of 1.5 microns.

[0028] Lubricating oil refers to polyalphaolefin (PAO10) with additives (R 1 -CO-N-C 2 h 4 o 2 -B-OR 2 , where R 1 , R 2 It is the alkane chain) prepared according to the mass ratio of 150:2.

[0029] Taking silicon nitride as the frictional couple, under the conditio...

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Abstract

The invention relates to a solid-liquid composite lubricating system for reducing the friction coefficient of a moving part. The system is formed by compounding a solid lubricating film and lubricating oil, wherein the solid lubricating film is prepared through deposition on the surface of a metal, ceramic or polymer material through a high-power pulse unbalanced magnetron sputtering technology, the solid lubricating film is one of a diamond-like carbon film, a molybdenum disulfide film and a titanium nitride film, and the lubricating oil is prepared from base oil and an additive according toa mass ratio of 200: 1 to 100: 5. According to the solid-liquid composite lubricating system for reducing the friction coefficient of the moving part, low-friction nano ball structure abrasive dust can be formed on the surface interface of the moving part, the contact area of the moving part in the friction process is effectively reduced, the friction shearing acting force is reduced, and finallythe friction coefficient and the wear rate of the moving part are remarkably reduced, so that the purposes of long service life and high reliability of the moving part are achieved, and the problems that existing automobiles, engineering machinery, high-grade numerical control machine tools and the like cannot meet the requirements for long service life and high reliability are solved.

Description

technical field [0001] The invention relates to the fields of surface treatment and life extension of mechanical moving parts, in particular to a solid-liquid composite lubrication system for reducing the friction coefficient of moving parts. Background technique [0002] The miniaturization and heavy-duty development of machinery put forward higher and higher requirements for lubrication technology. Traditional liquid lubrication technology shows more and more limitations, such as insufficient bearing capacity, etc., and liquid lubrication is inseparable from various additives. The current additives are still mainly S- and P-types. While these additives provide good lubrication, they also cause serious environmental problems. The solid lubrication technology has high bearing capacity and small environmental pressure as its main advantages. However, there are still many technical problems to be overcome in order to realize the complete solid lubrication of the entire mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/02C23C14/06C10M169/04C10N30/06
CPCC23C14/35C23C14/3485C23C14/025C23C14/0605C23C14/0641C23C14/0623C10M169/048C10M2201/041C10M2201/066C10M2201/061C10M2203/1006C10M2205/0206C10M2227/061
Inventor 魏晓莉高凯雄
Owner LANZHOU UNIV OF ARTS & SCI
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