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A kind of preparation method of micro-textured three-layer composite lubricating film

A lubricating film, microtexturing technology, applied in coatings, devices for coating liquids on surfaces, pretreatment surfaces, etc., can solve the problems of limited application, bonding strength, spreading degree and wear resistance of ionic liquid nano ultra-thin films. It can achieve the effect of simple preparation process, good application prospects, and improved tribological properties.

Active Publication Date: 2019-06-04
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bonding strength, spreading degree and wear resistance of ionic liquid nano-ultra-thin films prepared on amino or hydroxylated surfaces in the prior art are not good, which limits their application in MEMS.
[0007] Therefore, the surface texture treatment with special regular morphology and parameters is carried out on the substrate, and the self-assembled molecular film is used as the substrate fixed layer, the polymer film is used as the intermediate connection layer, and the ionic liquid film is used as the two-phase substrate through reasonable design and selection. The lubricating layer is sequentially covered on the surface textured substrate to prepare a micro-textured three-layer composite lubricating film, which effectively exerts the synergistic effect of the micro-texture and the three types of films in improving the tribological properties of the micro-surface. The method has no patent report

Method used

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  • A kind of preparation method of micro-textured three-layer composite lubricating film
  • A kind of preparation method of micro-textured three-layer composite lubricating film
  • A kind of preparation method of micro-textured three-layer composite lubricating film

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Embodiment 1

[0030] Example 1: The preparation of the micro-textured three-layer composite lubricating film of the square column regular hexagonal array is carried out in accordance with the following steps:

[0031] (1) Using inductively coupled plasma etching technology, the micro-textured regular morphology of square column regular hexagonal arrays with various geometric parameters is obtained on single crystal silicon wafers;

[0032](2) Dissociate the micro-textured single crystal silicon wafer into a size of 10mm×10mm, ultrasonically clean it in acetone, absolute ethanol and deionized water for 10min, and dry it with dry nitrogen. Then put it into the Piranha solution freshly prepared by 98% sulfuric acid and 30% hydrogen peroxide at a volume ratio of 7:3, keep it at 90°C for 30 minutes, rinse it repeatedly with deionized water, and blow it dry with nitrogen to obtain a micro-textured surface hydroxylation Monocrystalline silicon wafer;

[0033] (3) Dissolve (3-aminopropyl)trimethox...

Embodiment 2

[0036] Embodiment 2: The preparation of the micro-textured three-layer composite lubricating film with the regular hexagonal array micro-texture of the pits is carried out according to the following steps:

[0037] (1) Using inductively coupled plasma etching technology, the micro-textured regular morphology of regular hexagonal arrays of pits with various geometric parameters is obtained on single crystal silicon wafers;

[0038] (2) Dissociate the micro-textured single crystal silicon wafer into a size of 10mm×10mm, ultrasonically clean it in acetone, absolute ethanol and deionized water for 10min, and dry it with dry nitrogen. Then put it into the Piranha solution freshly prepared by 98% sulfuric acid and 30% hydrogen peroxide at a volume ratio of 7:3, keep it at 90°C for 30 minutes, rinse it repeatedly with deionized water, and blow it dry with nitrogen to obtain a micro-textured surface hydroxylation Monocrystalline silicon wafer;

[0039] (3) Dissolve (3-aminopropyl)tri...

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Abstract

The invention discloses a preparation method for a micro-texturing three-layer composite lubricant thin film. The surface of monocrystalline silicon is etched to obtain a microcosmic rough structure with regular equilateral-hexagon array morphology, and then through molecular self-assembly, polymer and ionic liquid technologies, a (3-aminopropyl) trimethoxy silane (APS) substrate fixation thin film layer, a polydopamine (PDA) intermediate junction thin film layer, and a carboxyl imidazolium ionic liquid (IL-COOH) fixation / flow two-phase lubricant thin film are sequentially obtained on the surface of a micro-texturing silicon slice, and the micro-texturing three-layer composite lubricant thin film is formed. According to the micro-texturing three-layer composite lubricant thin film prepared through the preparation method, surface texture, a self-assembled molecular film, a polymer thin film and an ionic liquid thin film are integrated reasonably, and the tribology performance of the surface of the monocrystalline silicon is effectively improved. The preparation method has good application prospects in the micro electro mechanical system surface protection field.

Description

technical field [0001] The invention belongs to the fields of solid surface tribology, micro-texture and film preparation, and in particular relates to a micro-textured three-layer composite lubricating film and a preparation method thereof. Background technique [0002] With the development of micro-manufacturing technology, the tribological problems in micro-devices are very prominent. When the device scale is reduced from the millimeter scale to the micro scale, due to the scale effect and the larger specific surface area, the surface force between the micro surfaces has a more significant impact on the normal operation and service life of the device than the volume force. Friction and wear are the main cause of device failure. Therefore, lubricating film systems with excellent anti-friction and anti-wear properties are needed to improve the tribological properties of micro-device surfaces. [0003] Surface texture can change the contact state of friction pairs, store l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D1/18B05D1/38B05D3/14B05D3/04B05D5/08B05D7/24
CPCB05D1/185B05D1/38B05D3/04B05D3/142B05D5/08B05D7/24B05D7/56
Inventor 刘思思张言童佳威
Owner XIANGTAN UNIV
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