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Super-hydrophobic composite coating and preparation method thereof as well as application

A composite coating, super-hydrophobic technology, applied in the coating, metal material coating process, ion implantation plating and other directions, can solve the problem of poor hydrophobicity of the coating, and achieve the effect of prolonging the service life and excellent mechanical properties

Active Publication Date: 2019-02-01
BEIJING RES INST OF AUTOMATION FOR MACHINERY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a super-hydrophobic composite coating and its preparation method and application, to overcome the defects of poor hydrophobicity of the coating in the prior art

Method used

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  • Super-hydrophobic composite coating and preparation method thereof as well as application
  • Super-hydrophobic composite coating and preparation method thereof as well as application
  • Super-hydrophobic composite coating and preparation method thereof as well as application

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preparation example Construction

[0070] The present invention also discloses the preparation method of the above-mentioned super-hydrophobic composite coating, the flow chart is as follows figure 2 Shown, this preparation method comprises the steps:

[0071] S1, using a magnetic filter cathode vacuum arc source to deposit a first metal film layer 110 on the surface of the substrate 100;

[0072] S2, using a magnetic filter cathode vacuum arc source to deposit a first metal nitride film layer 120 on the first metal film layer 110 under the condition of feeding nitrogen gas;

[0073] S3, using a magnetic filter cathode vacuum arc source to deposit the second metal film layer 130 on the first metal nitride film layer 120;

[0074] S4, using a magnetic filter cathode vacuum arc source to deposit a second metal nitride film layer 140 on the second metal film layer 130 under the condition of feeding nitrogen gas;

[0075] S5, using vacuum radio frequency magnetron sputtering technology, using borosilicate glass ...

Embodiment 1

[0099] Step 1: Clean the surface of the substrate with a magnetically filtered cathode vacuum Cr arc source. Specifically, the workpiece is placed in a vacuum chamber, and the workpiece is positioned at the exit of the Cr arc source, and the surface of the substrate is bombarded with a high-energy ion beam For cleaning, a pulse negative bias of 800V is applied to the workpiece, the pulse ratio is 70%, and the bombardment time is 5min.

[0100] Step 2, using a magnetic filter cathode vacuum arc source to deposit a Cr film on the surface of the substrate. Specifically, the cathode arc current is controlled at 80A, the deposition negative bias is controlled at 300V, the duty cycle is maintained at 80%, the deposition time is about 1 hour, and the film thickness is controlled at 0.5 μm.

[0101] Step 3, after depositing the Cr film layer, deposit a CrN film layer on the Cr film layer. Specifically, feed 50sccm nitrogen gas to keep the vacuum degree of the vacuum chamber at 1.6×10...

Embodiment 2

[0109] Step 1: Clean the surface of the substrate with a magnetically filtered cathode vacuum Cr arc source. Specifically, the workpiece is placed in a vacuum chamber, and the workpiece is positioned at the exit of the Cr arc source, and the surface of the substrate is bombarded with a high-energy ion beam For cleaning, a pulse negative bias of 800V is applied to the workpiece, the pulse ratio is 70%, and the bombardment time is 5min.

[0110] Step 2, using a magnetic filter cathode vacuum arc source to deposit a Cr film on the surface of the substrate. Specifically, the cathode arc current was controlled at 90A, the deposition negative bias was controlled at 700V, the duty cycle was maintained at 90%, the deposition time was about 0.5 hours, and the film thickness was controlled at 0.8 μm.

[0111] Step 3, after depositing the Cr film layer, deposit a CrN film layer on the Cr film layer. Specifically, 70 sccm nitrogen gas was introduced to keep the vacuum degree of the vacuu...

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Abstract

The invention discloses a super-hydrophobic composite coating and a preparation method thereof as well as an application. The composite coating comprises a first metal film layer, a first metal nitride film layer, a second metal film layer, a second metal nitride film layer, a silicon oxygen glass film layer and a hydrophobic layer, wherein the first metal film layer is positioned on the surface of a base material, the first metal nitride film layer is located above the first metal film layer, the second metal film layer is located on the first metal nitride film layer, the second metal nitride film layer is positioned on the second metal film layer, the silicon oxygen glass film layer is provided with a porous structure, and is located on the second metal nitride film layer; and the hydrophobic layer is located on the silicon oxygen glass film layer. According to the coating, the method and the application, the super-hydrophobic composite coating is based on a multi-layer functional coating prepared by a magnetic filtration cathode vacuum arc discharge technology, a vacuum radio frequency magnetron sputtering technology and an amplitude modulation decomposition etching technology,has excellent super-hydrophobic performance and a contact angle is 150 degrees or above.

Description

technical field [0001] The invention relates to the field of surface modification by physical vapor deposition, in particular to a preparation method for preparing a super-hydrophobic coating on the surface of a metal substrate, the obtained hydrophobic coating and the application of the hydrophobic coating to aircraft components. Background technique [0002] Icing is a common natural phenomenon, but it also brings many hazards and troubles. The condensation and accumulation of ice and frost will cause some accidents, which will have a great impact on people's travel and safety, and cause huge property losses to the country and the people. At home and abroad, there have been many flight accidents caused by icing of aircraft. This is because the aircraft passes through the icing area many times during the flight, and the supercooled water droplets in the atmosphere hit the surface components. The icing of the wings will destroy the aerodynamic shape and increase the resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/16C23C14/06C23C14/10C23C14/12C23C14/32C23C14/35C23C14/54C23C14/58C23C14/02C23F1/16
CPCC23C14/021C23C14/0641C23C14/10C23C14/12C23C14/16C23C14/325C23C14/35C23C14/54C23C14/5806C23C14/5846C23F1/16
Inventor 王冉张昕邱维维杨文军
Owner BEIJING RES INST OF AUTOMATION FOR MACHINERY IND
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