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Method for producing hydrophobic DLC coating layer

A coating and hydrophobic technology, which is applied in the field of preparation of hydrophobic DLC coatings, to achieve the effect of improving the binding force, improving the uniformity of the film layer, and reducing the preparation cost

Active Publication Date: 2018-10-19
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an apparatus for depositing thin films on surfaces that have low friction properties (such as water). By selecting specific types of atoms from this plasma, we created tiny structures called hydrous graphite layers made up of small crystals arranged like regular lattices. These layerings are highly effective when used alone due to their ability to reduce frictional resistance without adding any materials during manufacturing process. Additionally, these coatings provide better protection against corrosion compared to previous methods because they were less expensive but still had good adhesion even after being exposed to harsh environments over several months.

Problems solved by technology

Technological Problem addressed in this patents relates to how to improve durability and reduce costs for manufacturing disposables containing advanced materials like plastic films or coated metal surfaces through chemical modifications on these materials without compromising their quality.

Method used

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  • Method for producing hydrophobic DLC coating layer
  • Method for producing hydrophobic DLC coating layer
  • Method for producing hydrophobic DLC coating layer

Examples

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Effect test

preparation example Construction

[0060] The preparation method of the hydrophobic DLC coating of the present application comprises the following steps:

[0061] The Kaufman ion source is used to alternately clean the surface of the substrate with high and low energy, and polish or etch the surface of the substrate to obtain a substrate surface with a roughness of 0.01-0.1 microns. Among them, the energy of the Kaufman ion source is 1-3000eV, and the beam intensity is 1-500mA.

[0062] With the carbon target as the cathode, the carbon ions generated by the carbon target pass through the first strong pulse line package, the suppression line package and the second strong pulse line package, the middle line package, and the third strong pulse line set on the magnetic filter elbow in sequence. package, high-power pulse grid and high-pulse focused line package, and then deposit a hydrophobic DLC film layer with a self-organized concave-convex structure on the substrate.

[0063] Deposition process: set the arcing ...

Embodiment 1

[0068] 1S: Use the Kaufmann ion source to clean the substrate with high energy (1500-2000V), and use the Kaufmann ion source to clean the substrate with low energy (100-500V);

[0069] 2S: Use the carbon target as the cathode, set the arcing current to 100A, the high-power pulse bias voltage is the highest voltage of 12kv, the pulse width is 5ms, and the pulse frequency is 200Hz; the DC bias voltage is 300V, the duty cycle is 80%; the deposition time is 40 minutes .

[0070] The magnetic field parameters of each wire package are as follows:

[0071] 201: frequency 18Hz, current 30A;

[0072] 203: frequency 50Hz, current 5A;

[0073] 204: frequency 80Hz, current 20A;

[0074] 206: current 3A;

[0075] 207: frequency 20Hz, current 18A;

[0076] 208: frequency 150Hz, current 100A;

[0077] 209: the voltage is -20V, and the frequency is 10Hz.

Embodiment 2

[0079] 1S: Use the Kaufmann ion source to clean the substrate with high energy (2000-2500V), and use the Kaufmann ion source to clean the substrate with low energy (100-300V);

[0080] 2S: carbon target as cathode, arcing current 100A, high-power pulse bias voltage up to 8kv, pulse width 3ms, pulse frequency 10Hz; DC bias voltage 600V, duty cycle 50%; deposition time 50 minutes.

[0081] The magnetic field parameters of each wire package are as follows:

[0082] 201: frequency 50Hz, current 20A;

[0083] 203: frequency 50Hz, current 3A;

[0084] 204: frequency 80Hz, current 20A;

[0085] 206: current 3A;

[0086] 207: frequency 30Hz, current 15A;

[0087] 208: frequency 80Hz, current 20A;

[0088] 209: the voltage is -10V, and the frequency is 5Hz.

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Abstract

The invention discloses a method for producing a hydrophobic DLC (diamond-like carbon) coating layer. The method comprises the following steps: 1S: alternately carrying out high energy cleaning and low energy cleaning on the surface of a substrate by using a gas ion source; and 2S: depositing the hydrophobic DLC coating layer on the substrate by using a Kaisaiao arc magnetic filtration depositiontechnology with a carbon target as a cathode. The method can form carbon nanoclusters based on the Kaisaiao arc magnetic filtration deposition technology in the deposition process, and also forms a nanometer concave-convex structure, so the preparation cost is greatly reduced, and the binding force of nanoparticles is greatly improved. The hydrophobic DLC coating layer produced by the method has the characteristics of good hydrophobicity and non-wetting, and a high-frequency scalpel produced by using the coating layer has the characteristics of good wear resistance, no sticking to meat, and dispersion and non-agglomeration of blood, and improves a key problem that blood agglomeration affects the doctor's sight during surgery in order to improve the working conditions of medical staff.

Description

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Claims

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Application Information

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Owner BEIJING NORMAL UNIVERSITY
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