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Method for preparing abrasion-resistant super-hydrophobic ceramic coating through thermal spraying technology and product

A ceramic coating and super-hydrophobic technology, applied in the coating, metal material coating process, fusion spraying, etc., can solve the complex process, difficult to achieve large-area super-hydrophobic surface preparation, and industrial application, etc., to achieve Good wear resistance, good self-cleaning property and long service life

Active Publication Date: 2016-02-10
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there have been many technologies to achieve superhydrophobic properties, but the process is relatively complicated, and it is difficult to achieve large-scale preparation of superhydrophobic surfaces, and industrial applications cannot be realized. Therefore, a method with convenient operation, simple process, good repeatability, and high performance The technology of large-scale preparation and industrial application is still an urgent problem to be solved in this field

Method used

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  • Method for preparing abrasion-resistant super-hydrophobic ceramic coating through thermal spraying technology and product
  • Method for preparing abrasion-resistant super-hydrophobic ceramic coating through thermal spraying technology and product
  • Method for preparing abrasion-resistant super-hydrophobic ceramic coating through thermal spraying technology and product

Examples

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Effect test

Embodiment 1

[0034] In this embodiment, 316 stainless steel with a thickness of about 2mm is taken as the substrate, and the specific preparation method of the wear-resistant superhydrophobic coating is as follows:

[0035] (1) Clean the substrate with acetone, hydrochloric acid, 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 10 seconds. The number of sand shot is 100 mesh to increase the surface roughness of the substrate and improve the bonding strength of the coating;

[0036] (2) Using the method of plasma spraying, with TiO 2 Powder (average particle size is 100μm) is used as the spraying material, and the spraying parameters for controlling plasma spraying are: arc voltage 40V, arc current 300A, main air flow 40L / min, auxiliary air flow 12L / min, powder feeding speed 50g / min, spraying distance 150mm;,

[0037] (3) Utilize the liquid material flame...

Embodiment 2

[0043] In this example, in order to study the microscopic characteristics of the coating, different controllable micropattern structures were prepared based on 316 stainless steel in this example. The specific operations are as follows:

[0044] (1) Clean the substrate with acetone, hydrochloric acid, deionized water, etc. in sequence, and use 60-mesh brown corundum sand to roughen the surface of the substrate. The air pressure used for sandblasting is 0.6MPa to increase the surface roughness of the substrate. Meet the roughness requirements of spraying;

[0045] (2) In order to realize the micropatterning of the ceramic coating, 200 mesh, 120 mesh, and 80 mesh stainless steel mesh were used as the spraying substrate in the plasma spraying process;

[0046] (3) Using the method of plasma spraying, with TiO 2Powder (average particle size is 100μm) is used as spraying material, and the spraying parameters for controlling plasma spraying are: arc voltage 40V, arc current 300A, m...

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Abstract

The invention discloses a method for preparing an abrasion-resistant super-hydrophobic ceramic coating through a thermal spraying technology and a product. The method includes the following steps that (1) a substrate is subjected to surface roughening treatment; (2) a micro-patterned ceramic coating is prepared on the surface of the substrate through a plasma spraying technology; and (3) a low surface energy substance layer is sprayed to the obtained ceramic coating through a liquid material flame spraying technology, and the super-hydrophobic abrasion-resistant coating can be obtained. The material obtained through the preparing method has both the advantages of abrasion resistance and super-hydrophobic property, the tribological property of the super-hydrophobic coating is greatly improved, the static contact angle of the obtained coating can reach 150-180 degrees, and the rolling angle of the coating is smaller than 5 degrees. The method can prepare the abrasion-resistant super-hydrophobic coating on the basis of the surfaces of different substrates and is wide in the application range.

Description

technical field [0001] The invention relates to the field of surface modification, in particular to a method for preparing a wear-resistant super-hydrophobic ceramic coating by thermal spraying technology and a product thereof. Background technique [0002] Superhydrophobic refers to the characteristics of solid surface with water droplet contact angle greater than 150° and rolling angle less than 10°, which is similar to the self-cleaning performance of lotus leaf. Since superhydrophobic properties have broad application prospects in many aspects such as self-cleaning, energy saving and drag reduction, biomedicine, pipeline anticorrosion, bionic materials, etc., the superhydrophobic modification of solid surfaces has become one of the current research hotspots. [0003] The rough surface structure and surface chemical composition are necessary conditions for superhydrophobicity, and the low mechanical stability of both limits the practical application of superhydrophobic su...

Claims

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Application Information

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IPC IPC(8): C23C4/134C23C4/129
Inventor 陈秀勇李德燕龚永锋李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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