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Antibacterial wear-resistant amorphous carbon coating and preparation method thereof, antibacterial wear-resistant device

A coating and device technology, applied in the field of surface modification of ion beam materials, can solve problems such as affecting the service life and effect of related devices, poor wear resistance of antibacterial coatings, and restricting large-scale applications, and achieve good biocompatibility. Durable, dense coating, long lasting effect

Active Publication Date: 2020-04-07
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, antibacterial coatings in the prior art generally have poor wear resistance and short service life, which greatly affects the service life and effectiveness of related devices.
Amorphous carbon coating has unique advantages and broad application prospects in surface modification of materials due to its good mechanical properties, low friction coefficient, excellent chemical inertness and biocompatibility. However, pure amorphous The antibacterial performance of carbon materials is poor, and the antibacterial rate against common bacteria such as Escherichia coli is only about 30%, which limits its large-scale application

Method used

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  • Antibacterial wear-resistant amorphous carbon coating and preparation method thereof, antibacterial wear-resistant device
  • Antibacterial wear-resistant amorphous carbon coating and preparation method thereof, antibacterial wear-resistant device
  • Antibacterial wear-resistant amorphous carbon coating and preparation method thereof, antibacterial wear-resistant device

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preparation example Construction

[0035] The present invention also provides a preparation method of an antibacterial and wear-resistant amorphous carbon coating, comprising the following steps:

[0036] (1) Carry out plasma cleaning to substrate, obtain substrate A 1 ;

[0037] (2) Coating deposition: Introduce carbon source gas and inert gas into the deposition chamber, turn on the bias power supply, use the silver-silicon composite target T as the target material, and 1 Silver-silicon co-doped graphite-like amorphous carbon coating deposited by sputtering on C 1 , to obtain antibacterial and wear-resistant amorphous carbon coating.

[0038] The present invention deposits an antibacterial and wear-resistant coating on the surface of the substrate through a magnetron sputtering method. The magnetron sputtering method has the advantages of high deposition rate, strong bonding force between the film layer and the substrate, and is not limited by the geometric size of the equipment itself.

[0039]The present...

Embodiment 1

[0096] The medical stainless steel (316L) sheet was ultrasonically cleaned with absolute ethanol and acetone for 15 minutes, and then dried with nitrogen gas. The treated stainless steel sheet was placed in a vacuum coating chamber and vacuumed to a pressure of 2×10 -3 Pa, then feed argon gas to a pressure of 2Pa, turn on the bias power supply, and use argon (Ar) plasma to sputter and clean the metal substrate for 15 minutes to obtain a metal substrate A 1 , the sputtering cleaning condition is that the power supply is 10kW, the negative bias voltage applied to the metal substrate is -700V, and the bias duty cycle is 50%;

[0097] Metal base A 1 Place in the magnetron sputtering coating deposition chamber, and vacuum the coating deposition chamber to a pressure of 1×10 - 3 Pa, then pass argon gas into the deposition chamber at a flow rate of 160sccm until the pressure is 4.5Pa, turn on the bias power supply, and use the silver-silicon composite target T 1 as the target (A ...

Embodiment 2

[0107] The medical titanium alloy (Ti-6Al-4V alloy) sheet was ultrasonically cleaned with absolute ethanol and acetone for 20 min, and then dried with nitrogen, and the treated stainless steel sheet was placed in a vacuum coating chamber, and the vacuum was evacuated to a pressure of 1×10 - 3 Pa, then pass through argon gas to a pressure of 2Pa, turn on the bias power supply, and use argon (Ar) plasma to sputter and clean the metal substrate for 10 minutes to obtain a metal substrate A 1 , the sputtering cleaning condition is that the power supply is 5kW, the negative bias voltage applied to the metal substrate is -800V, and the bias duty cycle is 40%;

[0108] Metal base A 1 Place in the magnetron sputtering coating deposition chamber, and vacuum the coating deposition chamber to a pressure of 5×10 - 3 Pa, then pass argon gas into the deposition chamber at a flow rate of 200sccm, until the pressure is 4Pa, turn on the bias power supply, and use the silver-silicon composit...

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Abstract

The invention relates to the technical field of surface modification of ion beam materials, in particular to an anti-bacterial and wear-resisting amorphous carbon coating, a preparation method thereof and an anti-bacterial and wear-resisting component. The preparation method of the anti-bacterial and wear-resisting amorphous carbon coating comprises the following steps that (1) plasma cleaning is conducted on a substrate, and a substrate A1 is obtained; and (2) coating setting is conducted, specifically, carbon source gas and inert gas are injected into a setting chamber, a bias power supply is started, and a silver-silicon codoped quasi-graphite amorphous carbon coating C1 is sputter-deposited on the substrate A1 with a silver-silicon compound target T as a target material. The quasi-graphite amorphous carbon coating is modified through silver and silicon, doping of silicon enables the lubricating performance and the wear-resisting performance of the quasi-graphite amorphous carbon coating to be remarkably improved, and doping of silver remarkably improves the anti-bacterial performance of the quasi-graphite amorphous carbon coating material; and as for silver, the release speed is low, the anti-bacterial effect lasts long, and good biocompatibility is achieved, so that silver has good application prospects in the fields of daily life, medicine and the like.

Description

technical field [0001] The invention relates to the technical field of surface modification of ion beam materials, in particular to an antibacterial and wear-resistant amorphous carbon coating, a preparation method thereof, and an antibacterial and wear-resistant device. Background technique [0002] With the improvement of living standards, people's health awareness is also increasing, and antibacterial and sterilization requirements are put forward for terminal equipment (such as mobile phone casings, watch straps) and sanitary ware that are frequently touched in daily life. In addition, human implant materials have been widely used clinically, and have been used in artificial joints, artificial implant dentures, oral restoration materials and artificial heart valves. Among all medical implant materials, metallic materials are the earliest and most widely used clinically. However, most of the materials currently used in the above-mentioned fields have extremely poor antib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C14/35C23C14/06C23C14/02
CPCC23C14/022C23C14/0605C23C14/35
Inventor 刘小强向佳姚霞陈鑫琦孟辉
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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