Amorphous carbon-based space antibacterial wear-resistant solid lubricating composite film layer and preparation method thereof

An amorphous carbon layer, solid lubrication technology, applied in the fields of botanical equipment and methods, coatings, fungicides, etc., can solve problems such as endangering the life safety of astronauts, system failures, drinking water pollution, etc., and achieve good broad-spectrum antibacterial. Effects of Features

Active Publication Date: 2021-05-07
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The condensed water of the space station is rich in organic matter and microorganisms, which is very suitable for the growth of microorganisms. The microorganisms rely on water droplets to reproduce, and the secreted acid corrodes the material of the condensation dryer, causing the heat exchanger to leak
Drinking water, collected wastewater, and working fluid flowing in pipelines are easily contaminated by microorganisms during use and maintenance operations, causing drinking water pollution, pipeline blockage, etc., resulting in system failures
In severe cases, it will affect the safety of astronauts and space stations
In addition, the biodegradation of microorganisms will also accelerate the aging of certain materials, accelerate the release of harmful gases from materials, and even biochemically react with materials to release new types of harmful gases, causing harmful gases in the sealed cabin to exceed the standard and endangering astronauts safety of life

Method used

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  • Amorphous carbon-based space antibacterial wear-resistant solid lubricating composite film layer and preparation method thereof

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Effect test

Embodiment 1

[0057] In the present embodiment, the preparation process of substrate surface coating is as follows:

[0058] (1) Pretreatment. Put the stainless steel substrate into the acetone solution, ultrasonically clean it for 15 minutes, and then dry it with hot air.

[0059] (2) Clamping and vacuuming. Place the stainless steel substrate to be deposited on the rack, put it into the deposition equipment, and evacuate to 2.0×10 -3 Below Pa.

[0060] (3) Glow etching. The cavity was filled with high-purity argon gas, and the stainless steel substrate was cleaned by Ar plasma etching with a bias voltage of -400V for 20 minutes.

[0061] (4) Deposit tungsten carbide as the bottom layer. A layer of tungsten carbide is deposited on the substrate as a bottom layer by DC magnetron sputtering. The argon gas pressure is 4mTorr, the bias voltage is -80V, and the thickness of the tungsten carbide bottom layer is about 200nm;

[0062] (5) Depositing a Cr-doped amorphous carbon transition lay...

Embodiment 2

[0070] In the present embodiment, the preparation process of substrate surface coating is as follows:

[0071] (1) Pretreatment. Put the stainless steel substrate into the acetone solution, ultrasonically clean it for 15 minutes, and then dry it with hot air.

[0072] (2) Clamping and vacuuming. Place the stainless steel substrate to be deposited on the rack, put it into the deposition equipment, and evacuate to 2.0×10 -3 Below Pa.

[0073] (3) Glow etching. The cavity was filled with high-purity argon gas, and the stainless steel substrate was cleaned by Ar plasma etching with a bias voltage of -400V for 20 minutes.

[0074] (4) Deposit tungsten carbide as the bottom layer. A layer of tungsten carbide is deposited on the substrate as a bottom layer by DC magnetron sputtering. The argon gas pressure is 4mTorr, the bias voltage is -80V, and the thickness of the tungsten carbide bottom layer is about 200nm;

[0075] (5) Depositing a W-doped amorphous carbon transition laye...

Embodiment 3

[0083] In the present embodiment, the preparation process of substrate surface coating is as follows:

[0084] (1) Pretreatment. Put the stainless steel substrate into the acetone solution, ultrasonically clean it for 15 minutes, and then dry it with hot air.

[0085] (2) Clamping and vacuuming. Place the stainless steel substrate to be deposited on the rack, put it into the deposition equipment, and evacuate to 2.0×10 -3 Below Pa.

[0086] (3) Glow etching. The cavity was filled with high-purity argon gas, and the stainless steel substrate was cleaned by Ar plasma etching with a bias voltage of -400V for 20 minutes.

[0087] (4) Deposit tungsten carbide as the bottom layer. Deposit a layer of tungsten carbide on the substrate as a bottom layer by DC magnetron sputtering. The argon gas pressure is 4mTorr, the bias voltage is -80V, and the thickness of the tungsten carbide bottom layer is about 1μm;

[0088] (5) Depositing a Cr-doped amorphous carbon transition layer. Th...

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Abstract

The invention discloses an amorphous carbon-based space antibacterial wear-resistant solid lubricating composite film layer and a preparation method thereof. The composite film layer comprises a base layer, a metal doped amorphous carbon transition layer, an undoped amorphous carbon layer, a first Cu/Ag co-doped amorphous carbon transition layer, a Cu/Ag co-doped amorphous carbon layer, a second Cu/Ag co-doped amorphous carbon transition layer and an undoped amorphous carbon layer which are arranged in sequence. Aiming at the requirements of a space residence cabin environment for an antibacterial lubricating anti-friction coating layer, through the structural design of the coating layer, the base supporting layer, the transition layers, the functional layers and other different layers are matched with one another, and the two antibacterial elements Ag and Cu are compounded and introduced into the coating layer, the coating layer has the anti-friction and wear-resistant characteristics, and meanwhile is resistant to gram-negative bacteria represented by escherichia coli and gram-positive bacteria represented by staphylococcus aureus, and the good broad-spectrum antibacterial property is achieved. The film layer can well improve the antibacterial property and the lubricating property of moving parts of a space station.

Description

technical field [0001] The invention relates to the technical field of lubricating and anti-friction coatings for space environments, in particular to an amorphous carbon-based space antibacterial and wear-resistant solid lubricating composite film and a preparation method thereof, and in particular to a space habitat environment reaction wheel, gyroscope, Gears, pumps, transmission devices, sealing devices, etc. relate to the antibacterial and wear-resistant solid lubricating composite film layer on the surface of relative moving parts and its preparation method. Background technique [0002] In order to meet the needs of our country's space resource exploration and deep space exploration, the establishment and improvement of the space station can provide a better platform and foundation for our country, and the construction of the space station is also in the process of steadily advancing. The good environment created by the manned space station for the long-term stay of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/35C23C14/06C23C14/02A01N59/20A01N59/00A01P3/00A01P1/00
CPCC23C14/352C23C14/024C23C14/0635C23C14/0605A01N59/20A01N59/00
Inventor 鞠鹏飞刘京周翟运飞臧旭升陈妍肖金涛李锐周宏
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
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