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Ultralow-friction solid-liquid composite lubricating coating and preparation method thereof

A solid-liquid composite and lubricating coating technology, which is applied in coatings, lubricating compositions, metal material coating processes, etc., can solve the limitations of the wide application and industrialization of DLC solid lubricating materials, the lubricating effect is not as good as fluid lubrication, residual High stress and other problems, to achieve the effect of industrial application, best comprehensive performance, simple operation and easy control

Active Publication Date: 2022-03-18
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in terms of basic research and engineering application of DLC, the main problems are as follows: ① large residual stress, poor bonding force of film base, especially weak bonding with soft metal; ② lubricating performance is affected by ambient atmosphere (temperature, humidity, pressure, etc.) have great influence; ③The lubrication effect is not as good as that of fluid lubrication, and the friction coefficient is almost several times to dozens of times higher than that of grease lubrication; ④Self-consumable lubrication, the service life has a certain limit, which greatly limits the DLC solid lubricating materials Wide application and industrialization promotion

Method used

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  • Ultralow-friction solid-liquid composite lubricating coating and preparation method thereof

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preparation example Construction

[0036] The present invention also provides a method for preparing a composite solid-liquid lubricating coating, the coating method for preparing a diamond-like solid phase comprising the steps of:

[0037] (1) providing a substrate, an ion source, Ar gas as the working gas source, etching of the substrate cleaning;

[0038] (2) after the modification magnetron sputtering process complex hydride, hydrogenated diamond-like surface prepared solid phase.

[0039] In step (1), the etching of the base object of an aspect that the cleaned to remove surface impurities, on the other hand that the surface of the substrate is increased, to increase the adhesion between the solid phase and the diamond-like matrix. The process specifically includes: an Ar gas plasma etching cleaning substrate, wherein the ion source operating current of 0.2A, the operating power of 200 ~ 350W, a negative bias to the substrate 100V.

[0040] In step (2), using the magnetron sputtering composite processing metho...

Embodiment 1

[0045] (1) After the ultrasonic cleaning the substrate was placed on a vacuum chamber the workpiece carrier;

[0046] (2) The vacuum chamber pressure was adjusted to be 2.7 × 10 -3 PA, open linear ion source, the ion source into the linear 40sccm argon, linear ion source operating current of 0.2A, operating power is 280W, while the substrate is set to a negative bias 100V, etching of the substrate cleaning 15min;

[0047] (3) deposition of diamond on a surface of a solid phase matrix

[0048] Open source magnetron sputtering, pre-made diamond-like solid phase without hydrogen: magnetron sputtering source is high-purity graphite target (purity of ≧ 99.99%), the magnetron sputter source into argon gas flow rate of 50 sccm, magnetron sputtering target power 1350W, operating current of 2.8A, while a negative bias to the substrate 50V, the working pressure is maintained at 0.46 Pa, the deposition time was 1 hour. Then, turn off the magnetron sputtering source, the ion source is turned ...

Embodiment 2

[0053] (1) After the ultrasonic cleaning the substrate was placed on a vacuum chamber the workpiece carrier;

[0054] (2) The vacuum chamber pressure was adjusted to be 2.7 × 10 -3 PA, open linear ion source, the ion source into the linear 40sccm argon, linear ion source operating current of 0.2A, operating power is 280W, while the substrate is set to a negative bias 100V, etching of the substrate cleaning 15min;

[0055] (3) deposition of diamond on a surface of a solid phase matrix

[0056] Open source magnetron sputtering, pre-made diamond-like solid phase without hydrogen: magnetron sputtering source is high-purity graphite target (purity of ≧ 99.99%), the magnetron sputter source into argon gas flow rate of 50 sccm, magnetron sputtering target power 1350W, operating current of 2.8A, while a negative bias to the substrate 50V, the working pressure is maintained at 0.46 Pa, the deposition time was 1 hour. Then, turn off the magnetron sputtering source, the ion source is turned ...

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Abstract

The invention discloses an ultralow-friction solid-liquid composite lubricating coating and a preparation method thereof, and belongs to the technical field of material surface coating. The diamond-like coating is arranged on two or more base bodies with the mutual friction working condition, the diamond-like coating is arranged on the friction face where the base bodies rub with each other, and a lubricating oil layer serving as an intermediate liquid phase is arranged between the diamond-like coatings of the two or more base bodies with the mutual friction working condition. Only the surface of the diamond-like carbon coating is hydrogenated, and the percentage content of H element atoms contained in the hydrogenated surface is 3%-38%. The diamond-like solid phase has high hardness, good toughness and good bearing performance, and the formed solid-liquid composite lubricating coating has extremely low friction coefficient (0-0.01) and wear rate, so that the diamond-like solid phase composite lubricating coating is a composite lubricating coating material with excellent comprehensive performance, long service life and high reliability.

Description

Technical field [0001] The present invention relates to a lubricating coating and a preparation method thereof, particularly an ultra-low friction fixture composite lubricating coating and a preparation method thereof used in industrial and mining enterprises, belonging to the technical field of material surface coating. Background technique [0002] In recent years, high-tech industries such as ocean, aviation, automobiles, micro-machine power are rapidly developed, and the mechanical key sports components face serious friction wear problems, especially under energy and environmental dual pressure, traditional lubricating grease materials or single components, single structures The solid lubricating coating is difficult to meet complicated, multi-change, demanding conditions (temperature, humidity, pressure, load, material, etc.), urgently need to study and develop with ultra-low friction A new generation of high-performance lubricants and lubrication techniques such as high bea...

Claims

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Application Information

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IPC IPC(8): C23C14/06C23C14/35C23C14/58B05D7/24B05D7/14C10M107/02
CPCC23C14/0605C23C14/35C23C14/5846B05D7/24B05D7/14C10M107/02
Inventor 李晓伟乔江浩冯存傲蔡子明吉祥
Owner CHINA UNIV OF MINING & TECH
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