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A method for preparing wear-resistant superhydrophobic coating using cold spray technology and product thereof

A super-hydrophobic coating, cold spray technology, applied in the direction of pressure inorganic powder coating, etc., to achieve the effect of high deposition rate, broad application prospects, good non-stick performance and wear resistance

Active Publication Date: 2018-07-06
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on the preparation of wear-resistant superhydrophobic coatings and non-stick pans by cold spraying methods.

Method used

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  • A method for preparing wear-resistant superhydrophobic coating using cold spray technology and product thereof
  • A method for preparing wear-resistant superhydrophobic coating using cold spray technology and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In the present embodiment, the substrate material is selected as 316 stainless steel with a thickness of 2mm, and the specific preparation method of the wear-resistant superhydrophobic coating is as follows:

[0034] (1) Clean the substrate with acetone, alcohol, and deionized water in sequence, and then use 60-mesh brown corundum sand to roughen the surface of the substrate. The air pressure used for sandblasting is 0.5MPa, and the blasting time is 30s;

[0035] (2) The powder used is titanium dioxide powder modified by low surface energy substances, and the specific preparation method of the titanium dioxide powder modified by low surface energy substances is: adding titanium dioxide powder with an average diameter of 50 microns to ethanol to a concentration of 5% by mass , and then add 5% polytetrafluoroethylene (PTFE, wherein 5% refers to the final concentration of PTFE) in the solution, and stir evenly.

[0036] (3) Utilize the powder that cold spray technology spr...

Embodiment 2

[0041] In the present embodiment, the base material selection thickness is 316 stainless steel with a thickness of 2mm, and the specific preparation method of the wear-resistant super-hydrophobic coating and the product is as follows:

[0042] (1) Clean the substrate with acetone, alcohol, and deionized water in sequence, and use 60-mesh brown corundum sand to roughen the surface of the substrate. The air pressure used for sandblasting is 0.5MPa, and the blasting time is 30s;

[0043] (2) The powder that adopts is the aluminum oxide powder of low surface energy material modification, and the concrete preparation method of the aluminum oxide powder of low surface energy material modification is: join aluminum oxide (diameter is 50 microns) in ethanol and make mass percentage concentration be 5%, and then add 5% heptadecafluorodecyltriethoxysilane to the solution and stir evenly.

[0044] (3) Use cold spray technology to spray powder, and the process parameters to control sprayi...

Embodiment 3

[0048] Embodiment 3 (comparative example)

[0049] In the present embodiment, the base material selection thickness is 316 stainless steel with a thickness of 2mm, and the specific preparation method of the wear-resistant super-hydrophobic coating and the product is as follows:

[0050] (1) Clean the substrate with acetone, alcohol, and deionized water in sequence, and use 60-mesh brown corundum sand to roughen the surface of the substrate. The air pressure used for sandblasting is 0.5MPa, and the blasting time is 30s;

[0051] (2) The powder that adopts is the aluminum oxide powder of low surface energy material modification, and the concrete preparation method of the aluminum oxide powder of low surface energy material modification is: join aluminum oxide (diameter is 50 microns) in ethanol and make mass percentage concentration be 5%, and then add 5% heptadecafluorodecyltriethoxysilane to the solution and stir evenly.

[0052] (3) Use cold spray technology to spray powder,...

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Abstract

The invention discloses a method for preparing a wear-resisting super-hydrophobic coating through a cold spraying technology and a product of the method. The method comprises the following steps that firstly, the surface of a base body is roughened; secondly, sprayed powder is modified with low-surface-energy matter; and thirdly, the wear-resisting super-hydrophobic coating is prepared on the surface of the base body through the cold spraying technology. The static contact angle of the coating prepared through the method can be 150-180 degrees, the rolling angle of the coating is smaller than 10 degrees, and good super-hydrophobicity is achieved. According to the method, the product of a non-stick pan is prepared and has good wear resistance and non-stick performance, and compared with non-stick pans in the market, the product is more resistant to wear and has the great competitive potential in the field. In addition, the method can be used for preparing different wear-resisting super-hydrophobic coatings based on different base materials (such as metal, ceramic, glass and plastic), and the application range is wide.

Description

technical field [0001] The invention relates to the field of surface modification, in particular to a method and product for preparing a wear-resistant super-hydrophobic coating by using cold spray technology. Background technique [0002] Cold spraying technology uses high-speed airflow to accelerate solid particles, and after acceleration, they hit the preset substrate at high speed, so that the particles are plastically deformed and flattened to form a coating. Cold spraying can produce high-quality coatings with low oxide content, low internal stress, high hardness and high thickness. Compared with thermal spraying technology, cold spraying is operated at a temperature lower than the melting point of the powder. This process has almost no oxidation phenomenon and has almost no effect on the powder particle structure. It is suitable for temperature-sensitive materials, oxidation-sensitive materials and phase-change-sensitive materials, etc. . The coating prepared by col...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/04
CPCC23C24/04
Inventor 陈秀勇李德燕所新坤李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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