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Method for preparing nanostructure coating by sol spraying

A nanostructure and sol technology, which is applied in coatings, devices for coating liquid on surfaces, and pretreatment surfaces, etc., can solve the problems that liquid spraying technology cannot be widely used, reduces coating deposition efficiency, and loses enthalpy, etc., and achieves The effect is remarkable, the deposition efficiency is improved, and the effect of reducing the hardness of the coating

Inactive Publication Date: 2019-07-09
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the presence of a large amount of solvent in the liquid feeding method, during the spraying process, a large amount of enthalpy will be lost as the solvent evaporates, which reduces the deposition efficiency of the coating, making the liquid spraying technology unable to be widely used

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  • Method for preparing nanostructure coating by sol spraying
  • Method for preparing nanostructure coating by sol spraying
  • Method for preparing nanostructure coating by sol spraying

Examples

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Effect test

Embodiment 1

[0046] A method for preparing a nanostructure coating by sol spraying, the method steps are as follows:

[0047] (1) Dissolving raw materials in water to prepare YSZ (yttria-stabilized zirconia yttrium oxide stabilized zirconia) precursor solution, wherein yttrium element is used as a stabilizer for zirconium element;

[0048] (2) Add 30g of chelating agent to the completely dissolved precursor solution, heat the precursor solution to 60°C and continue to stir evenly. After the chelating agent is completely dissolved and dispersed evenly, dissolve 20g of chelating agent to a volume fraction The ethanol solution is slowly added dropwise to the precursor solution, and after stirring for a period of time, a fluid sol precursor is obtained with a viscosity of 500 mPa·s. Wherein the total mass ratio of the chelating agent to the solute in the precursor solution is 0.5:1.

[0049](3) Carry out sandblasting treatment on the clean surface of the substrate to increase the roughness of...

Embodiment 2

[0058] A method for preparing a nanostructure coating by sol spraying, the method steps are as follows:

[0059] (1) Dissolving raw materials in water to prepare YSZ (yttria-stabilized zirconia yttrium oxide stabilized zirconia) precursor solution, wherein yttrium element is used as a stabilizer for zirconium element;

[0060] (2) Add 70g of chelating agent to the fully dissolved precursor solution, heat the precursor solution to 60°C and continue to stir evenly. After the chelating agent is completely dissolved and dispersed evenly, dissolve 30g of the chelating agent to a volume fraction of 20%. The ethanol solution was added dropwise to the precursor solution, and after stirring for a period of time, a fluid sol precursor was obtained with a viscosity of 1000 mPa·s. The total mass ratio of the chelating agent to the solute in the precursor solution is 1:1.

[0061] (3) Carry out sandblasting treatment on the clean surface of the substrate to increase the roughness of the s...

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Abstract

The invention relates to a method for preparing a nanostructure coating by sol spraying, and belongs to the technical field of composite materials. The method comprises the following step of sprayinga sol precursor onto the surface of a substrate by a liquid spraying method to obtain the nanostructure coating, wherein the sol precursor refers to forming a precursor solution of liquid feed into asol with flowability in liquid spraying; and the viscosity of the sol is 100 mPa.s to 2000 Pa.s. Compared with other liquid spraying technologies for preparing coatings, the method has the advantagesthat the deposition efficiency is improved; the effect is remarkable; the nanostructure coating can be obtained; the coating hardness is reduced; and the sintering is relatively sufficient in the coating forming process, which is beneficial to the improvement of the bonding strength of the coating.

Description

technical field [0001] The invention relates to a method for preparing a nanostructure coating by sol spraying, in particular to a method for preparing a protective coating for an important part of a blade tip or a substrate in high-precision fields such as aero-engines and gas turbines, and belongs to the technical field of composite materials . Background technique [0002] With the rapid development of aerospace technology, the parameters such as thrust-to-weight ratio and inlet temperature of turbine engines are gradually increasing, and the requirements for mechanical parts are also getting higher and higher. Therefore, it is necessary to effectively improve the surface of the material so that it has the characteristics of heat insulation, oxidation resistance and corrosion resistance, and locally strengthen and protect the surface of the material, so as to prolong the service life of the component and improve the economy of the component. for safety and reliability pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D3/00B05D1/08
CPCB05D1/08B05D3/002B05D7/24B05D2350/33B05D2602/00
Inventor 杜令忠王喆兰昊张伟刚黄传兵
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI