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Anti-biological-contamination CrN-Ag composite coating and preparation method thereof

A composite coating, biofouling technology, applied in the direction of coating, metal material coating process, ion implantation plating, etc., can solve the problem of limited life extension effect, achieve high hardness, improve anti-biofouling and antibacterial properties Effect

Inactive Publication Date: 2019-01-11
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, although the commonly used surface enhancement coating technology can prolong the wear life of stainless steel and other parts, it has limited life extension effect on friction and wear and biofouling synergistic damage in seawater environment. Therefore, it is necessary to develop a A Composite Coating That Guarantees Wear Resistance and Prevents Biofouling

Method used

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  • Anti-biological-contamination CrN-Ag composite coating and preparation method thereof
  • Anti-biological-contamination CrN-Ag composite coating and preparation method thereof
  • Anti-biological-contamination CrN-Ag composite coating and preparation method thereof

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Embodiment 1

[0025] In this embodiment, the base material is 316 stainless steel. Using magnetron sputtering technology to prepare CrN-Ag composite coating on the surface of the substrate mainly includes the following steps:

[0026] (1) Perform mechanical grinding and polishing on the surface of the substrate, ultrasonically clean it three times with petroleum ether, acetone and alcohol, and then dry it with flowing nitrogen.

[0027] (2) Put the substrate after cleaning into the magnetron sputtering chamber, and evacuate until the vacuum degree is 10 -3 Pa; then, the target was cleaned by sputtering for 2 min, and the substrate sample was ion-etched for 20 min.

[0028] (3) Sputter a Cr target (with a purity of 99.95 at.%) for 10 min, and deposit a Cr transition layer on the surface of the substrate.

[0029] (4) Prepare and deposit CrN-Ag composite coating.

[0030] The cavity is filled with high-purity nitrogen (purity is 99.99at.%), the flow rate is set to 24sccm, using Ag target (...

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Abstract

The invention provides an anti-biological-contamination CrN-Ag composite coating. The anti-biological-contamination CrN-Ag composite coating is composed of nanocrystalline CrN and Ag second phase, wherein the atomic percentage content of Ag is 9-25%. The composite coating has good anti-fouling performance while ensuring the hardness, and can be used for substrate protection in harsh working conditions such as seawater. According to the CrN-Ag composite coating, magnetron sputtering technology is adopted, and an Ag target and a Cr target are selected, high-purity nitrogen is used as working gas, the CrN-Ag composite coating is deposited on the surface of the cleaned substrate, the Ag content in the composite coating can be controlled by regulating and controlling the Ag target current, andfurther the hardness and the anti-biological-contamination performance of the composite coating are regulated and controlled.

Description

technical field [0001] The invention belongs to the technical field of surface treatment, and in particular relates to an anti-biological fouling CrN-Ag composite coating and a preparation method thereof. Background technique [0002] Marine natural resources are an important guarantee to continuously meet the daily needs of human beings and ensure the sustainable development of the national economy. The development of marine resources must rely on the development of large-scale marine engineering equipment, and marine anti-biofouling materials are key materials for marine equipment. In the marine environment, marine organisms (seaweed, bacteria, worms, etc.) are adsorbed and accumulated on the surface of the mechanical moving parts of the ship or marine engineering equipment, which will cause increased wear and tear of the mechanical moving parts of the marine equipment, thereby reducing the performance and reliability of the marine engineering equipment and increasing fue...

Claims

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Application Information

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IPC IPC(8): C23C14/35C23C14/06C23C14/02
CPCC23C14/025C23C14/0641C23C14/352
Inventor 蒲吉斌蔡群王立平张学东王海新卢光明毛春龙陈善俊毛金根
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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