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Method for preparing ZrO2 thermal barrier coating in plasma sprayed coating way

A thermal barrier coating and plasma technology, applied in the field of material science, can solve problems such as coating failure and achieve excellent stability and molten salt corrosion resistance

Inactive Publication Date: 2013-09-11
启东市天汾电动工具技术创新中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing thermal barrier coatings, Y is usually used in the prior art 2 o 3 、 Ta 2 o 5 、Nd 2 o 3 or or La 2 o 3 As a stabilizer component, the thermal corrosion caused by the chemical reaction between the above components and impurities such as vanadium salt and sodium salt in the oil at high temperature is also a common factor leading to coating failure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A, nano -level zro 2 Preparation of powder

[0042] (1) ZRO (NO 3 Cure 2 As a salt ingredient for oxidation powder, Y (NO 3 Cure 3 6H 2 O as a stabilizer raw material, it is called 55G ZRO (NO 3 Cure 2 And 12g Y (NO 3 Cure 3 6H 2 O, mix;

[0043] (2) The mixed ZRO (NO 3 Cure 2 And y (no 3 Cure 3 6H 2 O Add to 450 ml of de -ion water, mix and mix, filter, add 190ml ethanol, and continue to mix and mix well;

[0044] (3) In step 2), 7-9ml metamamide is added to the solution made, and stirred for 25 minutes;

[0045] (4) Then add 165ml 1,2-oxide to the solution of step 3), and stir with drip while adding it;

[0046] (5) Pour it into a diner, seal it with plastic wrap, put it in a tray, and put it in a 60 ° C oven for gelization and Chen Hua process to obtain wet gel;

[0047] (6) Place the temperature of the gel seal 24 h, mashed it, and put it in a constant temperature drying box at 110 ° C;

[0048] (7) Move the dry gel into 坩埚, heat in the horsepower of 600 ° C, and get th...

Embodiment 2

[0055] A, nano -level zro 2 Preparation of powder

[0056] (1) ZRO (NO 3 Cure 2 As a salt ingredient for oxidation powder, Y (NO 3 Cure 3 6H 2 O as a stabilizer raw material, it is called 58G ZRO (NO 3 Cure 2 And 11g y (no 3 Cure 3 6H 2 O, mix;

[0057] (2) The mixed ZRO (NO 3 Cure 2 And y (no 3 Cure 3 6H 2 O Add to 480 ml of de -ion water, mix and mix, filter, add 195ml ethanol, and continue to mix and mix well;

[0058] (3) Step 2) Add 8ml methyl amine to the solution to be made and stir for 29 minutes;

[0059] (4) Then add 168ml 1,2-oxide to the solution of step 3), and stir with drip while adding it;

[0060] (5) Pour it into a diner, seal it with plastic wrap, put it in a tray, and put it in a 60 ° C oven for gelization and Chen Hua process to obtain wet gel;

[0061] (6) Place the temperature of the gel seal 24 h, mashed it, and put it in a constant temperature drying box at 110 ° C;

[0062] (7) Move the dry gel into 坩埚, heat in the horsepower of 600 ° C, and get the front...

Embodiment 3

[0069] A, nano -level zro 2 Preparation of powder

[0070] (1) ZRO (NO 3 Cure 2 As a salt ingredient for oxidation powder, Y (NO 3 Cure 3 6H 2 O as a stabilizer raw material, it is called 60g ZRO (NO 3 Cure 2 And 10g Y (NO 3 Cure 3 6H 2 O, mix;

[0071] (2) The mixed ZRO (NO 3 Cure 2 And y (no 3 Cure 3 6H 2 O Add to 500 ml of de -ion water, mix and mix, filter, add 200 mL ethanol, and continue to mix well;

[0072] (3) Step 2) Add 7 to 9ml methyl amine to the solution to be made and stir for 35 minutes;

[0073] (4) Then add 170ml 1,2-oxide to the solution of step 3), and stir with drip while adding it;

[0074] (5) Pour it into a diner, seal it with plastic wrap, put it in a tray, and put it in a 60 ° C oven for gelization and Chen Hua process to obtain wet gel;

[0075] (6) Place the temperature of the gel seal 24 h, mashed it, and put it in a constant temperature drying box at 110 ° C;

[0076] (7) Move the dry gel into 坩埚, heat in the horsepower of 600 ° C, and get the front -...

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Abstract

The invention relates to a method for preparing a ZrO2 thermal barrier coating in a plasma sprayed coating way. The method comprises the following steps of: preparing stable nano-zirconia powder with a large specific surface area by a way of adopting ZrO(NO3)2 as a zirconium source and dropping epoxypropane; then adding proper Lu2O3, In2O3, Al2O3 and TiO2 based on the prepared stable nano-zirconia powder with the large specific surface area to prepare the ZrO2 thermal barrier coating. The prepared coating is high in stability and relatively high in corrosion resistance.

Description

Technical field [0001] The present invention belongs to the field of material science and technology, which involves a specifically preparing ZRO through a plasma spraying legal system 2 Method of thermal barren coating. Background technique [0002] Thermal Barrier Coating is a layer of ceramic coating, which is deposited on the surface of high -temperature metal or alloy.The device (such as engine turbine blades) can run at high temperature and improve the thermal efficiency of the device (engine, etc.) of more than 60%. [0003] In order to improve the concept of heat barriers as early as the 1950s in the 1920s of the 1950s, in order to improve the high temperature and corrosion resistance of gas turbine blades and rocket engines.After a long period of exploration in the selection and preparation process of coating, a major breakthrough was achieved in the early 1980s, laying a solid foundation for the application of thermal barriers.The literature shows that the current advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/10C23C4/11C23C4/134
CPCY02T50/60
Inventor 黄三甦
Owner 启东市天汾电动工具技术创新中心
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